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SYSTEMATIC REVIEW Open Access
Determinants of Cycling Performance: aReview of the Dimensions and FeaturesRegulating Performance in Elite CyclingCompetitionsKathryn E. Phillips* and William G. Hopkins
Abstract
Background: A key tenet of sports performance research is to provide coaches and athletes with information toinform better practice, yet the determinants of athletic performance in actual competition remain an under-examined and under-theorised field. In cycling, the effects of contextual factors, presence of and interaction withopponents, environmental conditions, competition structure and socio-cultural, economic and authoritarianmechanisms on the performance of cyclists are not well understood.
Objectives: To synthesise published findings on the determinants of cyclists’ behaviours and chances of success inelite competition.
Methods: Four academic databases were searched for peer-reviewed articles. A total of 44 original research articlesand 12 reviews met the inclusion criteria. Key findings were grouped and used to shape a conceptual framework ofthe determinants of performance.
Results: The determinants of cycling performance were grouped into four dimensions: features related to theindividual cyclist, tactical features emerging from the inter-personal dynamics between cyclists, strategic featuresrelated to competition format and the race environment and global features related to societal and organisationalconstraints. Interactions between these features were also found to shape cyclists’ behaviours and chances ofsuccess.
Conclusion: Team managers, coaches, and athletes seeking to improve performance should give attention tofeatures related not only to the individual performer, but also to features of the interpersonal, strategic, globaldimensions and their interactions.
Key Points
� The challenges of accurately modelling theperformance of elite cyclists in complex racingenvironments using the traditional reductionistapproach become evident when the features and
dimensions influencing race performance arecollated.
� Cyclist performance is constrained by featuresrelated to the individual cyclist, tactical featuresemerging from the inter-personal dynamics betweencyclists, strategic features related to the competition,and global features related to the organization of thesport.
� Sports performance researchers need to findmethodologies and techniques that enable elementsof performance to be considered in concert rather
© The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you giveappropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate ifchanges were made. The images or other third party material in this article are included in the article's Creative Commonslicence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commonslicence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtainpermission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
* Correspondence: [email protected] for Health and Sport, College of Sport and Exercise Science, VictoriaUniversity, Melbourne, Australia
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 https://doi.org/10.1186/s40798-020-00252-z
than in isolation, and for the complex interplay andinteractions between dimensions and features ofracing to be better understood.
IntroductionThe focus of sports performance research is to providecoaches and athletes with information to inform betterpractice, yet the dimensions and features shaping theperformances of elite athletes in actual competitions re-main under-examined and under-theorised [1, 2]. Inelite cycling, the factors related to achieving success havebeen investigated predominantly using the traditional re-ductionist paradigm, where components of performanceare isolated and examined in laboratories or solo timetrials in order to reduce the influence of confoundingvariables. The physiological, biomechanical, nutritional,aerodynamic and physical components of elite cyclingperformance have all been examined from this perspec-tive [3–6]. These investigations have identified an exten-sive number of features governing the performance ofindividual cyclists, but the interplay between these fea-tures is not well understood, and there is still a limitedunderstanding of how cyclists regulate their behaviour incompetitive performance environments [7–10].In elite cycling, which we define as competitions sanc-
tioned by the Union Cycliste Internationale (UCI), themajority of competitions are race events, where oppo-nents compete simultaneously to be first across the fin-ish line. Characterised by the direct interactionpermitted between opponents, race events can rangefrom one-versus-one to mass-start contests and arefound in most cycling disciplines (road, track, BMX,cyclo-cross and mountain biking). The proximity of op-ponents in racing contests results in behavioural dynam-ics not evident in solo performances, as riders constantlyadapt to the actions of their opponents and the changingstructure of the race environment [11–13]. The context-ual, temporal, and spatial parameters shaping athlete be-haviour must be better understood if we are to furtherour knowledge of the determinants of cycling perform-ance in race events.In recent decades, there has been an increased recog-
nition of the complex interplay between features regulat-ing an athlete’s competitive performance and a call forresearch that takes an integrated approach to the studyof athlete behaviour [14–17]. Seifert and colleagues [14]argued for the need to study athlete behaviour at differ-ent levels of analysis, recognising athletes as complexadaptive systems whose behaviour is governed by theirinteraction with opponents, teammates and the specificconstraints of the performance context. The aim of thecurrent project was to synthesise findings from existingacademic literature to build an integrated understanding
of the dimensions and features underpinning cyclists’ be-haviours and chances of success in elite racing.In the interest of reflexivity (transparency about the
perspectives of the authors), the primary author workedwithin a national elite cycling program for close to adecade. Her experience of the limitations of the existingscientific literature in addressing the complex inter-relatedness of elite performance helped shape the designof this study and elements of the interpretation. Profes-sional experience and knowledge provide a valuable lensthrough which to examine the research [18], and narra-tive synthesis enables a wide range of research to be sys-tematically reviewed and synthesised [19]. Her co-authorhas more than 20 years of experience with quantitativeassessment of athletic performance.
MethodsLiterature SearchFour academic databases (PubMed, ScienceDirect,SPORTDiscus, Google Scholar) were searched for peer-reviewed articles related to the study of cycling perform-ance in elite competition. Search terms initially includedcombinations of the following keywords: athlete, bicyc-ling, competition, contest, elite cycling, performance,peloton, professional cycling, road racing and track cyc-ling. Using the reference lists of these primary identifiedarticles, an additional snowball search was undertaken,with further database searches conducted using add-itional search terms and highly relevant articles added[20]. The terms added were as follows: BMX, cyclo-cross, Giro de Italia, Grand Tour, mountain-biking, roadcycling, time-trial, Tour de France, world class andVuelta a España. Following this widened search, the ti-tles and abstracts of all articles were reviewed, duplicatesremoved, and 139 papers identified for potentialinclusion.
Inclusion CriteriaResearch articles had to meet the following criteria to beeligible for inclusion: analyses were of cyclists at the elitelevel (those who had performed in competitions sanc-tioned by the UCI), authors sought to identify and ex-plain the determinants of performance in actualcompetitions, and articles were published in peer-reviewed journals or books in English with full text avail-able. In total, 44 original research and 12 reviews metthe inclusion criteria. Of the excluded publications, 41articles did not examine performance in elite competi-tion, seven were modelling or mathematics papers thatwere highly theoretical and focused only on the opti-misation of time-trial performance, and a further 37 de-scriptive studies were excluded, as no links were madebetween the findings and race outcome or chances ofsuccess. The studies selected for final inclusion
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 2 of 18
incorporated research with mathematical, physiological,psychological, sociological, management, economic andgame theoretical approaches. Thirty-seven research arti-cles focused on the performance of elite cyclists in pro-fessional road racing, with a further nine articles focusedon track cycling, three on mountain biking, one oncyclo-cross and six articles examined a mix of cyclingdisciplines (see Fig. 1).
Data Extraction and Study InterpretationA narrative synthesis approach was taken to systematic-ally review the included articles, as this allowed synthesisof findings from multiple studies with considerable het-erogeneity in their methods, participants, cycling discip-line and theoretical underpinnings. In a preliminarysynthesis, the key characteristics of all relevant articleswere captured, including the following: author(s), date,title, discipline of cycling, methodology, competitionlevel, sample size, aim of study, variables used, key find-ings and conclusions. The key findings from the selectedstudies were then grouped according to the setting orcontext of the investigation and according to the natureof the feature(s) being reported (see Table 1). Thesegroupings were used to construct a rubric that helpedexplain the determinants of cycling performance, as pre-sented below. The relationships within and betweenthese groupings were also explored. A standardised risk-
of-bias assessment was unable to be conducted due tothe heterogeneity in study designs across the includedarticles, but a critical review of methodological quality isaddressed where necessary.
Results and DiscussionThe performances of elite cyclists in competitive elite ra-cing are influenced by features related to the followingfour dimensions: the individual dimension and featuresrelated to the individual cyclist, the tactical dimensionand features which emerged from the inter-personal dy-namics between performers, the strategic dimension andfeatures related to the competition format and environ-ment, and the global dimension related to societal andorganisational features of the sport. An overview of eachdimension is presented below, identifying the key fea-tures and how these interact to shape cyclists’ behav-iours and chances of success in elite racing.
The Individual DimensionVarious features have been shown to govern the per-formance of individual cyclists in elite competitions, in-cluding the cyclists’ physiological and morphologicalfeatures, cognitive skills, nationality, aptitude for risk,and physical attractiveness. Research in the field of sportand exercise science has tended to focus at this level ofanalysis [75].
Citations retrieved from initial searches (n = 56,375)PubMed (n = 4999)SPORTDiscus (n = 269)Google Scholar (n = 45,521)ScienceDirect (n = 5586)
Excluded based on title and abstract screening (n = 9173)
Potentially relevant studies (n = 139)
Additional citations identified from screened & relevant articles (n = 11)
Additional citations retrieved from additional search using modified terms (n = 34,562)
PubMed (n = 1,067)SPORTDiscus (n = 352)Google Scholar (n = 27,137)ScienceDirect (n = 6006)
Excluded based on full-text screening (n = 94)Did not examine performance in elite competition (n = 41)Highly theoretical and focused only on the optimisation of time-trial performance (n = 7)Descriptive studies were excluded, as no links were made between the findings and race outcome or chances of success (n= 37)Full text unavailable or not in English (n = 9)
Potentially relevant studies (n = 6293)
Excluded before screening (n = 46,969)Database results sorted by likely relevanceScreening terminated due to increasing irrelevance of articles citations
Duplicates removed (n = 1128)
Excluded before screening (n = 30,415)Database results sorted by likely relevanceScreening terminated due to increasing irrelevance of articles citations
Potentially relevant studies (n = 4147)
Initial studies included in qualitative synthesis (n = 45)
Total studies included in qualitative synthesis (n = 56)
Fig. 1 Flow diagram of the screening process. See ‘Inclusion Criteria’ section for the criteria defining the initial and modified searches
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 3 of 18
Table
1Keycharacteristicsof
research
articlesinvestigatingthepe
rform
ance
ofelite
cyclistsin
compe
tition,organisedby
levelo
fanalysisandhigh
lightingthepe
rform
ance
features
focusedon
ineach
stud
y
Levelo
fanalysis
Cycling
discipline
Metho
dSubjectsanddata
Perfo
rmance
features
Theindividu
aldimen
sion
Luciaet
al.[21]
Road
(tim
e-trial)
Empiricalanalysis
11profession
alroad
cyclists,3
Tour
deFrance
timetrial
perfo
rmancesover
2years(1998/1999)
Physiologicalfeatures
Padilla
etal.[22]
Road
cycling
Empiricalanalysis
24profession
alroad
cyclists
Physiologicaland
morph
olog
icalfeatures
(linksto
competition
features)
Rodriguez-Marroyo
etal.[23]
Road
cycling
Empiricalanalysis
Workloadde
mands
on30
profession
alroad
cyclistsacross
5-day,
8-day,and21-day
stageraces(n
=10,5
and5respectively)
collected
over
5consecutiveracing
season
s.
Linksbe
tween:
physiologicaland
compe
titionfeatures
(linksalso
toteam
dyna
mics,team
hierarchy)
Impe
llizzerietal.[24]
Mou
ntain
biking
Empiricalanalysis
12internationally
compe
titivecyclists,com
petin
gin
oneinternationall
evelmou
ntainbike
race
Physiologicalfeatures(linksto
competitionfeatures)
Impe
llizzerietal.[25]
Mou
ntain
biking
Empiricalanalysis
13maleregion
al,n
ationaland
internationalU
23cross-coun
try
mou
ntainbike
cyclistscompe
tingin
anatio
nallevelcross-coun
try
compe
tition
Physiologicaland
additio
nalind
ividualfeatures(
ability/experiencelevel)(linksto
competitionfeatures)
Chidley
etal.[26]
Mou
ntain
biking
Mixed
metho
dsMultip
lestud
yproject.In
stud
y3:43
malecyclistsrang
ingfro
mjunior,
senior,m
aster,expe
rtandelite
downh
illmou
ntain-biking
catego
ries
Physiological,cogn
itive,and
additio
nalind
ividualfeatures
(skill,self-confidence)
Sven
dsen
etal.[27]
Road
cycling
Empiricalanalysis
Retrospe
ctivecatego
risationof
80compe
titivemalecyclists,including
9World
Tour
cyclists
Physiologicaland
additio
nalind
ividualfeatures(training
,race
experience)
Moran
andPitsiladis
[28]
Road
cycling
Review
Review
article
Add
ition
alindividu
alfeatures
(geneticsan
dperfo
rman
ce)
Impe
llizzerietal.[29]
Road
cycling
andmou
ntain
biking
Empiricalanalysis
27profession
alfemaleroad
cyclistsand12
elite
femalemou
ntain
bikersfro
meigh
tdifferent
coun
tries
Morph
olog
icalandph
ysiologicalfeatures(linksto
competition
features)
Dorelet
al.[30]
Trackcycling
Empiricalanalysis
12maleelite
cyclistscompe
tingat
Nationaland
Internationallevel
trackraces
Physiological,morph
olog
icalandadditio
nalind
ividual
features
(fron
talsurface
area,optimal
pedalling
rate)
Haake
etal.[31]
Trackcycling
androad
cycling
Empiricalanalysis
World
recordsforthe1-hdistance
from
1894
to1996,and
forthe
4-km
individu
alpu
rsuitfro
m1964
to1996
Other
individu
alfeatures
Spindler
etal.[32]
Vario
uscycling
disciplines
Review
Review
article
Cog
nitivefeatures
Thetacticaldimen
sion
Waldron
etal.[33]
Trackcycling
Empiricalanalysis
1sing
lerace
(24rid
ers)of
internationalcom
petitivecyclists
(World
Champion
ship
level)
Draftingandinterpersonalfeatures
Men
aspà
etal.[34]
Road
cycling
Empiricalanalysis
Sing
le-casestud
ylong
itudinald
esign,
retrospe
ctiveanalysisof
onemaleprofession
alroad
cyclistin
thesprin
tfinishe
sof
31grandtour
stages
from
2008
to2011
Draftingfeatures,inter-personalfeatures,team
dynamics,
compe
titionfeatures
Bossietal.[35]
Cyclo-cross
Empiricalanalysis
329cyclists(m
en+wom
en)compe
tingin
5ed
ition
sof
theUCI
World
Champion
ships(2012–2016)
Draftingfeatures,com
petitionfeatures
(weather)
Hoe
nigm
anet
al.[36]
Road
cycling
Age
nt-based
mod
elling
Themod
elran1800
trialsof
vario
uscombinatio
nsof
cyclist
streng
thandbe
ststrategy
Draftingandinterpersonalfeatures(linksto
competitionf
eatures,additiona
lind
ividualfeatures)
Tren
chard[37]
Road
cycling
Econ
omicmod
elling
Theo
reticalanalysis—mod
ellingestim
ates
basedon
draftin
gdata
from
priorresearch
Draftingandinterpersonalfeatures(linksto
physiological
features)
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 4 of 18
Table
1Keycharacteristicsof
research
articlesinvestigatingthepe
rform
ance
ofelite
cyclistsin
compe
tition,organisedby
levelo
fanalysisandhigh
lightingthepe
rform
ance
features
focusedon
ineach
stud
y(Con
tinued)
Levelo
fanalysis
Cycling
discipline
Metho
dSubjectsanddata
Perfo
rmance
features
Tren
chard[38]
Road
cycling
Econ
omicmod
elling
Twotestprotocolsrunwith
vario
uslevelsof
cyclistsandadjusted
variables
Draftingandinterpersonalfeatures(linksto
physiological
features)
Scelleset
al.[39]
Road
cycling
Empiricalanalysis
268breakaways,over
76stages,4
Tour
deFrance
even
ts.Resultswerealso
bootstrapp
ed.
Interpersonaland
contextualfeatures
(linksto
individual
dimensio
n,draftingan
dcompetitionfeatures)
Dilger
andGeyer
[11]
Road
cycling
Empiricalanalysis
49sprin
tfinalsin
which
asm
allg
roup
ofcyclistssprin
tedforthestagewin.
26du
els,13
three-up
s,10
finishe
swith
betw
eenfour
andsevencyclists.
140rid
ersin
total.
Draftingandinterpersonalfeatures(linksto
individual
dimensio
n)
Moffattet
al.[40]
Trackcycling
Logisticregression
mod
els
231racesat
4UCIW
orld
Cup
compe
titions
Drafting,
interpersonaland
contextualfeatures
Dwyeret
al.[41]
Trackcycling
Machine
learning
4racesfro
mWorld
Cup
(3)andWorld
Champion
ship
(1)even
tsacross
1season
,incl.91
cyclists(66un
ique)
Draftingandcontextualfeatures
Thestrategicdimen
sion
PhillipsandHop
kins
[42]
Trackcycling
Empiricalanalysis
336UCIW
orld
Cup
/World
Champion
ship
andOlympiclevelcyclists(196
male,140female)
Com
petitionfeatures
(linksto
individual
andtactical
dimensio
ns)
Luciaet
al.[43]
Road
cycling
Empiricalanalysis
13profession
alroad
cyclists,8
‘clim
bers’and
6‘timetrialists’w
hohada
stagewin
inaUCIevent
intheprior2years.
Link
betw
eencompe
titionfeatures
andindividu
aldimen
sion
(physiolog
icalandmorph
olog
icalfeatures)
Ofogh
ietal.[44]
Trackcycling
Machine
learning
7even
ts,allcyclists,m
ixof
5and6even
tom
nium
sCom
petitionfeatures
(linksto
individual
dimensio
n)
Ofogh
ietal.[45]
Trackcycling
Machine
learning
193maleom
nium
records,167femaleom
nium
recordsacross
5and6
even
tom
nium
sCom
petitionfeatures:com
petitionstructure
Ofogh
ietal.[46]
Trackcycling
Empiricalanalysis
96data
records(m
en)and75
data
records(wom
en)fro
mfour
compe
titions,
encompassingelite
andjunior
racing
atWorld
Champion
ship
andNational
Champion
ship
level
Com
petitionfeatures
(linksto
individual
dimensio
n)
Filipas
etal.[47]
Road
cycling
Empiricalanalysis
43profession
alcyclistswho
achieved
atop10
pacing
inaGrand
Tour
betw
een2010
and2015
Linksbe
tweenteam
hierarchy,compe
titionfeatures
and
compe
titioncalend
ar
Larson
andMaxcy
[48]
Road
cycling
Empiricalanalysis
Allmassstartstages
ofthethreeGrand
Tours(1985–2010)n=1436
Con
textualfeatures(linksto
authoritarianan
dinterpersona
lfeatures)
Rodriquez-Gutierrez
[49]
Road
cycling
Empiricalanalysis
Allprofession
alcyclistsbe
long
ingto
the18
UCIP
roteam
sin
theyear
2011.Sam
pleeq
ualled448cyclists.
Team
features:o
pportunity
(linksto
morph
ological
features,
additiona
lind
ividualfeatures,competitioncalend
arfeatures)
Larson
andMaxcy
[50]
Road
cycling
Mod
elling
Expansionof
themod
elof
Cande
lonandDup
uy[51]
toincorporate
coaching
andprod
uctio
nfunctio
ns.
Team
features,con
textualfeatures(linksto
authoritarian
features,econo
micfeatures,rew
ardmecha
nism
s)
Cabaudet
al.[52]
Road
cycling
Review
Metho
dused
ontw
o2014
Tour
deFrance
stages
Objectives
andrewards,econo
micfeatures,rew
ard
mechanism
sandinterpersonalfeatures
Thesocietalandorganisatio
nald
imen
sion
Perneg
er[53]
Road
cycling
Empiricalanalysis
5thplaceGrand
Tour
finishe
rsfro
m1990
to2009
Strategicdimen
sion
:com
petitionfeatures
societal
dimen
sion
:historicalfeatures
(linksboth
tosubversivebeha
viours)
Lipp
ietal.[54]
Road
cycling
Empiricalanalysis
Winne
rsof
Grand
Tourssinceinception
Strategicdimen
sion
:com
petitionfeatures
societaldimen
sion
:historicalfeatures
(linksboth
tosubversivebeha
viours)
Rogg
eet
al.[55]
Road
cycling
Dataen
velopm
ent
analysis
31cyclingteam
scompe
tingin
theTour
deFrance
over
thepe
riod
2007–2011(105
observations)
Team
features
andrewardmechanism
s(linksto
competition
andindividual
features)
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 5 of 18
Table
1Keycharacteristicsof
research
articlesinvestigatingthepe
rform
ance
ofelite
cyclistsin
compe
tition,organisedby
levelo
fanalysisandhigh
lightingthepe
rform
ance
features
focusedon
ineach
stud
y(Con
tinued)
Levelo
fanalysis
Cycling
discipline
Metho
dSubjectsanddata
Perfo
rmance
features
Rebe
ggiani
and
Tond
ani[56]
Road
cycling
Empiricalanalysis
One
season
ofProTour
racing
data
(2005)
Autho
ritarianandecon
omicfeatures
(linksto
competition
features
andrewardmecha
nism
s)
Aub
elet
al.[57]
Road
cycling
Discretetim
e-logit
mod
elDatafro
m10,551
cyclistsin
thefirstthreeworld
division
sof
cyclingfro
m2005
to2016,including
271sanctio
nedcyclists
Subversive
behaviou
rs(linksto
authoritarian,econ
omican
drewardmecha
nism
s)
Zhen
g2016
[58]
Vario
usInterviewsand
documen
tanalysis
4semi-structuredinterviewswith
lead
Chine
sestaff+compreh
ensive
documen
tanalysis
Autho
ritarianandecon
omicfeatures
Lode
wijkxand
Brou
wer
[59]
Road
cycling
Empiricalanalysis
Winne
rsof
Grand
TourssinceWorld
War
2Socialmechanism
sandsubversive
behaviou
rs(linksto
authoritarian,
econ
omican
dinter-person
alfeatures)
PrinzandWicker[60]
Road
cycling
Socio-cultu
ralanalysis
Long
itudinald
ataset
from
Tour
deFrance
from
2004
to2013
(1542ob
servations
from
598different
cyclists)
Autho
ritarianfeatures,team
features
(linksto
individual
features)
Migno
t[61]
Road
cycling
Review
Theo
reticalanalysis
History
andprestig
e,econ
omicandauthoritarianfeatures,
compe
titioncalend
arfeatures
Fink
andSm
ith[62]
Road
cycling
Socio-cultu
ralanalysis
Socio-cultu
ralexaminationof
unofficialn
ormswith
exam
ples
givenfro
mprevious
edition
sof
theTour
deFrance
Socialmechanism
s(with
links
toauthoritarian,econ
omic
andrewardmecha
nism
s,an
dsubversivebeha
viours)
Schu
mache
ret
al.[63]
Road
andtrack
cycling
Retrospe
ctiveanalysis
Race
results
of4432
cyclistsfro
m77
coun
trieswho
hadparticipated
inmajor
elite
orjunior
elite
cyclingracesfro
m1980
to2004
Autho
ritarianfeatures
(linksto
individual
features)
Larson
andMaxcy
[48]
Road
cycling
Empiricalanalysis
Finishingpo
sitio
nandrelativetim
esfortop-25
cyclistsfinishing
all
mass-startstages
ofthethreeGrand
Toursfro
m1985
to2010
(n=1436)
Autho
ritarianfeatures
(with
links
todrafting,interpersona
lan
decon
omicfeatures)
Brew
er[64]
Road
cycling
Review
Review
article
Subversive
behaviou
randauthoritarianmechanism
s,history
andprestig
e(linksto
econ
omicfeatures)
Multi-dimen
sion
al
Albert[65]
Road
cycling
Empiricalanalysis
Vario
us:p
ersonalexperiencefro
mracing
,formalinterviewswith
USrid
ers
andofficials,cyclingpressandvide
orepo
rts.Senior
men
’sroad
racing
inallinstances.
Tacticaldimen
sion
:drafting,
interpersonaland
contextual
features
Societaldimen
sion
:socialm
echanism
sandauthoritarian
features
(allinterlinked)
VanReethandLarson
[66]
Road
cycling
Vario
uslevels
Review
:com
preh
ensive
book
with
chaptersexploringthevario
usdimen
sion
sandfeatures
ofprofession
alroad
cycling—
pred
ominantly
from
ansportsecon
omicspe
rspe
ctive.
Individu
aldimen
sion
:physiolog
ical,m
orph
olog
ical,cog
nitive
andadditio
nalfeatures
Tacticaldimen
sion
:drafting,
interpersonaland
contextual
features
Strategicdimen
sion
:com
petitionfeatures,calen
dareffects,
objectives,collusion
andassociation,
team
features.
Societaldimen
sion
:history
andprestig
e,authoritarian,
econ
omicmechanism
s,subversive
behaviou
r(various
links)
Torgler[67]
Road
cycling
Ordered
prob
itand
ordinary
leastsquares
mod
elling
Tour
deFrance,fulld
ata—
21team
s,188cyclists(147
finishe
rs)
Individu
aldimen
sion
:morph
olog
icalfeatures,experience
effects,cultu
ralb
ackgroun
deffects
Tacticaldimen
sion
:teammateeffects
Strategicdimen
sion
:opp
ortunity
effects
MujikaandPadilla
[68]
Road
cycling
Review
Review
article
Individu
aldimen
sion
:physiolog
ical,m
orph
olog
icalfeatures
Strategicdimen
sion
:com
petitionfeatures
Netland
etal.[69]
Road
cycling
Socio-cultu
ralanalysis
Semi-structuredinterviews:9pe
rson
s(6
athletes,3
directors)of
Norweg
iancontinen
talcyclingteam
s.Plus
1director
and3cyclistsfro
madifferent
profession
alteam
.
Strategicdimen
sion
:team
features
Societaldimen
sion
:autho
ritarian,
rewardandsocial
mechanism
s
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 6 of 18
Table
1Keycharacteristicsof
research
articlesinvestigatingthepe
rform
ance
ofelite
cyclistsin
compe
tition,organisedby
levelo
fanalysisandhigh
lightingthepe
rform
ance
features
focusedon
ineach
stud
y(Con
tinued)
Levelo
fanalysis
Cycling
discipline
Metho
dSubjectsanddata
Perfo
rmance
features
Luciaet
al.[70]
Road
cycling
Review
Review
article
Individu
aldimen
sion
:physiolog
ical,m
orph
olog
icaland
additio
nalind
ividualfeatures
Strategicdimen
sion
:com
petitionfeatures
(and
links
toph
ysiologicala
nddraftingfeatures)
Societaldimen
sion
:sub
versivebe
haviou
rs(and
links
toadditiona
lind
ividualfeatures)
Martin
etal.[71]
Vario
usdisciplines
(sprintfinishe
s)
Review
Review
article
Individu
aldimen
sion
:physiolog
icalfeatures
Tacticaldimen
sion
:draftingfeatures
(linksto
physiologicalf
eatures)
Craig
andNorton[5]
Trackcycling
Review
Review
article
Individu
aldimen
sion
:physiolog
icalandmorph
olog
ical
features
Strategicdimen
sion
:com
petitionfeatures
(linksto
physiologicalfeatures)
Santallaet
al.[72]
Road
cycling
Review
Review
article
Individu
alfeatures:p
hysiolog
ical,m
orph
olog
icaland
additio
nalind
ividualfeatures
Strategicdimen
sion
:com
petitionfeatures
(linksto
physiologicalfeatures)
Societaldimen
sion
:history
andsubversive
behaviou
rfeatures
(linksto
physiologicalfeatures)
Castron
ovoet
al.[73]
Road
cycling
Review
Review
article
Individu
aldimen
sion
:physiolog
icalandcogn
itive
features
Strategicdimen
sion
:com
petitionfeatures
(linksbetween
thesefeatures)
Men
aspa
andAbb
iss
[74]
Road
cycling
Review
Review
article
Individu
aldimen
sion
:physiolog
icalandmorph
olog
ical
features
Strategicdimen
sion
:com
petitionfeatures
(and
thelinks
betweenthese)
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 7 of 18
Physiological FeaturesAn individual cyclist’s performance has been attributedto their peak and functional power outputs, cardiovascu-lar, pulmonary and other physiological capacities (see[3–6, 26, 68, 70, 72] for comprehensive reviews). In re-cent decades, the contribution of submaximal physio-logical variables, including cycling economy orefficiency, has also been highlighted [76–79]. Despite ex-tensive study of cyclists’ physiological features, the ex-tent to which these predict competitive success in racesat the elite level is limited, particularly in mass-start ra-cing [21, 25, 77, 80]. Impellizzeri and colleagues [24]found only 40% of the variance between internationalcross-country cyclists’ finishing times was explained bydifferences in physiological characteristics. Chidley andcolleagues [26] found that most of the variance in finishtimes of downhill mountain bikers was explained by skill(r2 = − 0.76), with only a small proportion attributableto physiological variables (anaerobic capacity, r2 = 0.0;VO2max, r2 = − 0.3). Phillips and Hopkins [42, 81] dem-onstrated the tenuous links between an individual’sphysiological features and elite competitive performance,finding that factors determining consistent individualtime-trial performance transferred minimally to per-formance in mass-start or one-versus-one racing. Cy-clists must have high levels of physiological fitness toreach the elite level, but at this level there appear to belittle differences in their physiological characteristics,and therefore other factors contribute to race outcomes[25, 80]. Contextual, temporal and spatial parameters arealso known to alter the physiological demands on a cyc-list and their association with success. For example, theformat and structure of a cycling competition alter thetechnical skill requirements and physiological demandson a cyclist, predisposing individuals with particularphysiological features to be better suited for certaincompetition formats or races [22, 41, 43, 47, 78, 82, 83].These links are highlighted further in ‘Competition Fea-tures: Terrain, Environment and Competition Structure’section.
Morphological FeaturesA cyclist’s height, body weight, muscle size, and fibrecomposition have been shown to influence performancein specific types of races at the elite level [29, 30, 61, 67,84]. Furthermore, the morphological characteristics ofelite cyclists vary between cycling disciplines [5, 23, 29,72], consistent with cyclists specialising into particulardisciplines or team roles based on their morphology[85]. For example, road cyclists are frequently cate-gorised according to their morphological characteristicsas climbers, sprinters, or domestiques. As air resistanceis one of the dominant forces a cyclist must contendwith, certain morphological trade-offs occur. Having a
greater muscle mass can enable a cyclist to better gener-ate the energy and power required to overcome the dragcaused from riding at high speeds on flat surfaces [84]but can also lead to an increased frontal surface area,thereby increasing drag and negatively affecting perform-ance [30]. In the hill and mountain stages of professionalroad races, when speeds are low, overcoming gravity be-comes more important than overcoming drag, and cy-clists with low body mass tend to be more successful[22, 84]. These and other well-established links betweena cyclist’s morphology, competition features and chancesof success, are detailed further in ‘Competition Features:Terrain, Environment and Competition Structure’section.
Emotional and Cognitive FeaturesThe role of a cyclists’ cognitive features in regulatingtheir behaviour and competition performance washighlighted by Spindler and colleagues in a recent reviewof the psychology of elite cycling [32]. A cyclist’s mood,levels of anxiety, self-confidence, ability to manage pain,attentional focus and cognitive function were identifiedas influencing performance, although the authors notedthat the differing aims and objectives of the studiesreviewed made it difficult to establish strong support forany particular association. There was tentative evidencethat anxiety impairs performance amongst elite maleroad riders, that implicit beliefs affect decision-makingperformance, and that pain management is important toachieve success in elite road cycling [32]. There was alsosome evidence that the sex of a cyclist modified the ef-fect of confidence on performance, and evidence of adifference in cognitive abilities between elite and sub-elite riders [32], but whether these cognitive differencespredict success at the elite level remains to be seen. Thepotential influence of stress, mental fatigue, personality,and an individual’s implicit beliefs in regulating their be-haviour and competition performance were alsohighlighted [32].Larson and Macxy [80] provided further support for
the importance of cognitive skills, explaining that cyclistsmust manage their energy expenditure, effort andpacing, optimise their aerodynamics in relation to theiropponents, and make decisions not only in competitionbut also in training. Castronovo and colleagues [73] ex-plored how cognitive features influence a cyclist’s per-ceived level of exertion and subsequent regulation ofeffort over the course of a race. Cyclists are known tosubjectively distribute their energetic resources acrossthe race to improve their performance, a strategy re-ferred to as pacing [5, 86]. Cyclists adjust their pace ac-cording to their anticipated and accumulated levels offatigue, terrain characteristics, race duration, elapsed dis-tance, and competition structure [23, 35]. The pacing
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 8 of 18
strategy a cyclist adopts is also known to be affected bythe presence and behaviour of their opponents, andthere is some evidence of a sex effect [23, 35, 87]. Forexample, Bossi and colleagues [35] found male and fe-male cyclo-cross athletes distributed their efforts differ-ently across the course of a race, but were unable toconclude whether this was due to differences in context-ual features, such as race length, or psychological differ-ences, such as differences in confidence and riskperception. These studies lend support to the argumentsof Seifert et al [14] and Noakes [15] of athletes as com-plex adaptive systems whose behaviours are governed bythe interplay between cognition and action, and whoregulate their effort and energy expenditure according tothe information available. As noted by Spindler and col-leagues [32], there is a need for further research into thepsychological factors governing success in elite cyclingto improve understanding of the interplay between cog-nitive function, athlete behaviour, and competitionperformance.
Other Individual FeaturesThe effects of nutrition and ergogenic aids on perform-ance have received some attention in the literature [73].No studies appear to have been performed to establishthe efficacy of these strategies in actual competitions.Performance improvements in solo time-trial events
have been attributed to advances in bike technology andaerodynamic positioning [31], but in races where com-petitors are able to draft, the benefits of technology aremuch more difficult to quantify. Lippi and colleagues[54] analysed the average speed of Tour de France win-ners across the decades and attributed some of the im-provement to major advances in bike technology from1926 to 1970, as well as improvements in training, nutri-tion, and an increasing prevalence of doping across thisperiod (see ‘Subversive Behaviours: the Prevalence ofDoping’ section). The stabilisation of average speeds ofTour de France winners in recent decades is thought tobe a result of reaching a ceiling in improvements intraining and bike technology, as well as improvements inanti-doping measures. Notably, the improvements incycling performance attributed (in part) to advances inbike technology by Haake [31] and Lippe et al. [54] oc-curred over several decades, whereas most athletes com-peting against each other in any particular race orcompetition are likely to have access to technological de-velopments at roughly the same time. As such, differ-ences in bike technology in races with multipleopponents are unlikely to be of a magnitude that differ-entiates between cyclists’ chances of success within aparticular race.Nationality or regional origin has been shown to influ-
ence performance and chances of success, with riders
and teams seemingly more willing to take risks or ex-pend effort when races hold some kind of national sig-nificance or are located closer to their country of origin[67] (see also ‘History and Prestige’ section). In downhillmountain biking, skill level had a positive effect on arider’s self-confidence and their subsequent perform-ance, but no significant relationship was found betweenperformance and past experience, or performance andaccess to quality equipment [26]. Similarly, in track androad cycling, increased elite competitive cycling experi-ence did not correlate with better performance [42, 67],but increased competition exposure in the developmen-tal years was more predictive of future success thanphysiological measures for road cyclists at World Tourlevel [27]. There is also some evidence to suggest a malecyclist’s physical attractiveness, masculinity andlikeability is linked to performance and chances of suc-cess in professional road cycling [80, 88]. A cyclist’s will-ingness to abide by the social norms that governinteractions between riders in the peloton can also influ-ence their likelihood of success [36] (see ‘Social Mecha-nisms: Unofficial Norms and Peloton Sub-Culture’section). Finally, there is some evidence that an individ-ual must have the right genetic make-up to succeed inelite cycling by responding appropriately to trainingstimuli [28]. Lack of consistent findings across these fea-tures means these results are suggestive of an effect ra-ther than conclusive, and more research is required toestablish the robustness of these findings and the magni-tudes of their effects on the performance of elite cyclistsin race events.
The Tactical DimensionIn competitions where opponents are able to interact,riders continually adapt to the actions of opponents andthe changing race environment [81, 89–91]. The tacticaldimension refers to features arising from this interactionbetween competitors and the actions they take in re-sponse to what is occurring. Understanding the effectsof inter-personal dynamics on cyclists’ behavioural andtactical decisions is important if we are to make sense oftheir performances in events other than solo time trials.
Drafting Features: Pacing, Positioning and the Emergenceof PelotonsIn race events, the presence of other cyclists enablesdrafting to occur, whereby a cyclist can reduce the en-ergy cost of maintaining a particular speed by riding inthe slipstream of other cyclists [37, 71, 92, 93]. By work-ing together and taking turns to ride in the lead position,the energetic benefits of drafting allow a group of cy-clists to sustain a speed greater than a cyclist could sus-tain riding alone [93]. The term peloton describes agroup of cyclists who ride as a pack or bunch, a form of
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 9 of 18
cooperative behaviour that emerges due to the energeticbenefits provided by drafting [85]. The drag experiencedby cyclists in the mid to rear positions of large pelotons(~ 120 riders) is ~ 5 to 10% of that experienced by anisolated cyclist riding at the same speed, and ~ 16% ofthat experienced by the cyclist leading the peloton (whoexperiences a reduction in drag due to the ‘upstream’flow disturbance caused by the mass of riders followingbehind) [94]. Positions towards the rear of the pelotonprovide greater energetic savings, but are tactically dis-advantageous, as the risk of collisions increases and it isharder to manoeuvre past opponents when nearing thefinish line, or to respond to or launch attacks (wherebyriders attempt to break away from the front of the mainpeloton and ride in advance of their opponents despitethe higher energetic cost) [61, 94]. Consequently, cycliststend to compete for the drafting and positional re-sources available, and effective use of these two re-sources has been shown to affect a cyclist’s chances ofsuccess in racing [37]. In the elimination, a mass-startrace in the track-cycling omnium, the most successfulcyclists were shown to be those who rode towards thefront of the peloton (tactically advantageous) and in po-sitions lower on the track (energetically advantageous)throughout the race [41]. Menaspà and colleagues [34]presented a case study of a Tour de France rider whowas able to improve his chances of success in the finalsprint by spending less energy through effective posi-tioning and drafting during the earlier stages of the race.In cyclo-cross, top-ranked cyclists expended more en-ergy in the initial laps of a race in order to gain a pos-itional advantage over their opponents, after which theysettled into a more sustainable pace for the remaininglaps [35].
Interpersonal Features: ‘Coopetition’, Cooperation andDefectionWhile riding in a peloton reduces the overall energy costof maintaining a certain speed, it can also narrow thegap between cyclists’ physiological capacities [37]. Aweaker cyclist who optimises use of the drafting resourcethrough effective positioning could theoretically beat astronger opponent who did not position well or regulatetheir energy expenditure as effectively [85]. As a result, acyclist’s best course of action during a race is dependenton their individual characteristics (see ‘The IndividualDimension’ section), opponent characteristics and ac-tions, contextual features of the race and the optionsavailable to them [39, 61]. To gain a positional advantageover their opponent(s), some cyclists will launch an at-tack and attempt to ride in advance of their opponent(s)[33, 36, 39]. Attacking cyclists often form into smallergroups termed ‘breakaways’, electing to share positionaland drafting resources in order to reduce the energetic
cost of staying ahead of the main peloton. The degree ofcooperation displayed in a breakaway group appears tobe influenced by the size and physiological heterogeneityof the riders in the group, with cooperation increasing asthe breakaway group size decreases and the physiologicaldisparity narrows amongst the riders [37]. If a cyclist inthe breakaway refuses to cooperate in sharing the draft-ing resource with their opponent(s), the likelihood of theother riders defecting (not sharing in the workload) alsoincreases, and the breakaway is likely to fail [36]. Anumber of researchers have used game theory to charac-terise the dilemma cyclists face between cooperating,attacking or defecting [39, 66, 85]. Mignot [85] charac-terised the dilemma as a zero-sum sequential-movegame, where the optimal timing of an attack or break-away attempt is the point at which delaying for any lon-ger reduces the cyclist’s chances of winning the race.The option to cooperate, attack, or defect has also beencharacterised as a prisoner’s dilemma, where each cyclisthas an incentive to be the first to defect [39, 66].
The Influence of Contextual Factors on Race DynamicsModelling work from a number of authors hashighlighted how contextual features alter the best choiceof action for a cyclist, breakaway group or peloton dur-ing a race and the influence of these features on thechances of a cyclist’s or breakaway’s success [13, 36]. Forexample, as the speed of the peloton increases and ridersapproach their maximal sustainable power, drafting be-comes a more valuable resource. In contrast, when thefinish line is approaching or the peloton encounterscrosswinds (where the formation of echelons can causesplits in the field), increased value is placed on the moreforward positions [38]. Olds [13] found that breakaway-group size, chase-group size, gradient, and remainingrace distance all affected the velocity, time to exhaustion,and critical gap size a breakaway group needed to suc-ceed. Agent-based modelling by Hoenigman and col-leagues [36] indicated that stronger cyclists seem tobenefit from adopting a strategy of cooperation, whileweaker cyclists appear to be better off defecting. On apractical level, the influence of contextual factors on arider’s best choice of action was demonstrated by theanalyses of Moffatt and colleagues [40], who showed thatdistance to finish, physiological differences, and relativerider positioning during a race influenced the likely out-come of head-to-head match sprints in track cycling. Ina similar analysis of sprint finishes of Tour de Francestages, cyclists’ chances of winning were linked to thedistance remaining, the number of teammates still ridingin support, and the positioning of the cyclist in the finalmeters of the race [11]. In stage races, the chances of abreakaway succeeding were also dependent on the threatit posed to the leader in the general classification (overall
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 10 of 18
cumulative position) and whether the energy expend-iture required to chase down the breakaway was deemedsupportable by the cyclists in the main peloton [39]. Forexample, if the next stage of the race was perceived tobe tough, the riders often considered it more prudent tosave their energy than catch the breakaway.
Team DynamicsIn professional road cycling, a cyclist’s overall perform-ance is influenced by the skills and attributes of theirteammates, as most riders work to improve their teamleader’s chances of success rather than their own [56, 61,67]. While an individual is awarded the win, their effortsare often aided by the work of teammates, who providedrafting and positional assistance to allow the teamleader to conserve energy for the most crucial momentsof the race [56, 61, 67]. Torgler [67] applied theoriesfrom labour economics to examine productivity in pro-fessional road cycling teams, finding that an individualcyclist’s performance suffered if they were in a team ofhigh performers, as that rider was expected to sacrificetheir own chances of success in order to improve thechances of their teammate(s). For the team leader, thebenefit of having teammates in support was also demon-strated by Menaspa and colleagues [34], who found thechances of a cyclist winning a sprint stage of a GrandTour increased when they had teammates providing anon-competitive drafting benefit during the last 60 s ofthe race. Features of team dynamics at the strategic levelare explored in ‘Team Hierarchy: Opportunity’ section.
The Strategic DimensionStrategic features refer to elements of the competition orrace environment that shape the decisions of a cyclist,team, or organisation before the competition begins andset their actions within a wider context [95]. Cycling dif-fers from most sporting competition in that the featuresand format of cycling races are heterogeneous, withcompetition structures, course distances, routes and ter-rain differing from race-to-race. The multiple-prize re-ward structure in professional road cycling adds furthercomplexity to the race environment, leading to theemergence of efficiency, non-competitive behaviour, andoccasionally, the formation of tacit alliances and collu-sion between riders.
Competition Features: Terrain, Environment andCompetition StructureThe format and structure of a cycling competition altersthe technical-skill requirements and physiological char-acteristics associated with optimal performance, predis-posing riders with particular characteristics to be bettersuited for certain competition formats or races [22, 41,43, 47, 78, 82, 83]. Cycling competitions may consist of a
single race or be multi-race, single day or multi-daycompetitions; take a mass-start, one-versus-one, individ-ual or team format; take place indoors, outdoors, in pur-pose built facilities, off-road, on road or on purpose builttracks; and run across a range of surfaces and terrain[56]. Numerous studies have explored the attributes re-quired for success across the various formats of cyclingcompetition, demonstrating that each presents differentmetabolic, physical, physiological, technical and cogni-tive stressors on an individual [5, 21, 24–26, 29, 41, 43,68, 72]. In this sense, the attributes required for optimalperformance in any particular cycling discipline, event,or race are highly dependent on the competition fea-tures. Cyclists therefore tend to specialise into particulardisciplines that suit their characteristics and improvetheir likelihood of success, as detailed in ‘MorphologicalFeatures’ section.The structure of a competition has also been shown to
alter the physiological characteristics associated withsuccess [46, 74]. Rodriquez-Marroyo and colleagues [23]demonstrated the impact of competition structure onperformance, detailing the changes in the workload de-mands on professional cyclists across 5-, 8-, and 21-daystage races. Adjustments to the format of the omnium, a2-day competition in track cycling, have also shown theeffect of competition structure on performance, with theaddition of the elimination event altering the type ofrider likely to do well in the overall competition [44].Course route, commonly referred to as the parcours inroad cycling, also influences cyclist performance. For ex-ample, race distance and difficulty and location of tech-nical features (such as the inclusion of cobblestonesections, or position, gradient and number of hill climbs)all alter the physiological and technical demands on arider [22]. While the competition format and route arefixed in advance, environmental (e.g., weather) condi-tions can also alter performance and likelihood of suc-cess. Wind and rain in particular can alter the value ofthe drafting and positional resources, altering the per-ceived risk associated with particular racing strategiesand the way cyclists elect to expend their energy [K.E.Phillips, unpublished observations].
Competition Calendar Effects: the Emergence of Efficiencyand Non-Competitive BehaviourCompetition features have been shown not only to influ-ence the type of cyclists likely to succeed, but the waycyclists compete, particularly in competitions consistingof a series of races, such as the Match Sprint, Keirin andOmnium tournaments in track cycling, and multi-daystage racing in road cycling. In multi-race or multi-stagecontests, cyclists must balance their desired goals againstthe efforts required to achieve them, resulting in theemergence of strategies related to efficiency, whereby
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 11 of 18
riders seek to optimise performance across a series ofraces to secure a larger objective [52]. For example, roadcyclists aiming to win the general classification in amulti-day stage race often adopt conservative racingstrategies in the early stages, saving energy for the crit-ical moments of the competition [85]. The potential pay-offs of using a strategy of efficiency have been shown inthe track cycling Omnium, where a cyclist aiming forthe overall title is able to finish as low as 6th place inone of the events and still be in contention for the over-all title [44]. The importance of efficiency in multi-stagecycling races can also lead to the emergence of non-competitive behaviour, where cyclists who are unlikelyto win a race or secure a high ranking in the variousclassifications have a higher incentive to abandon therace, should it not go as they planned [67]. Abandoninga race is a rational way for a cyclist to conserve energy,reducing the cost of the current effort to protect per-formance in future events [67].
The Influence of Objectives: Incentives and RewardsThe diversity of racing objectives amongst cyclists pre-sents a unique challenge for researchers seeking tounderstand the performance of individual cyclists inreal-world competition, namely that numerous competi-tors may deliberately withhold their best efforts [52]. In-stead, riders may be motivated by objectives that havenothing to do with winning a particular race or stage[52]. For example, elite track cyclists have discussedemploying conservative racing strategies, taking less risksand seeking only to finish above a certain rank in orderto secure a qualification spot for a more prestigious race,such as the Olympic Games (K.E. Phillips, unpublishedobservations). In professional road cycling, the multiple-prize structure of the competition shapes cyclists’ goalsand thereby influences their choice of action in anygiven race or stage [85]. Cyclists may be focused on se-curing a classification title (e.g., general, mountain,points, young rider) or focused on gaining TV exposurefor sponsors or their personal brand by being in thebreakaway group at the front of the race [52].An individual’s or team’s perception of their chances of
success in a competition is known to influence their se-lection of race objective, affecting their selection of ra-cing strategy and willingness to expend effort. Forexample, professional road cycling teams have beenshown to adjust their objectives depending on the char-acteristics of the riders in a given event, stage, or compe-tition [55]. A team may also elect to adjust theirobjective mid-competition, seeking a secondary prize(such as a stage win or other classification) owing to anearly injury, change in leadership, crashes, or a change intheir perceived chances of success [52].
Collusion and AssociationRace outcomes in cycling are sometimes influenced bycollusion, when opponents deliberately cooperate, formtacit alliances, or swap monetary compensation in returnfor assistance in achieving a goal [56, 64]. The cooper-ation seen between opponents in cycling (as referred toin ‘Competition Calendar Effects: the Emergence of Effi-ciency and Non-Competitive Behaviour’ section) is aninteresting case study for game theorists, as cooperationviolates the implicit assumptions of the zero-sum game(one side wins, one side loses) that characterises mostsporting competitions [85]. In cycling, one competitormay ‘carry’ another competitor, even to the point ofhelping the other to win, with the goal of securing a lar-ger objective [65]. Unlike in many other sports, conflictand association exist together in cycling.
On one hand, the theme of individualism reflectsthe unambiguous aspects of conflict, emphasizingindividual or team effort that occurs within theframework of the basic rules and results in a win orloss. On the other hand, a theme of collectivism hasemerged, reflecting some of the situational particu-larities of the sport that require an association be-tween opponents, called ‘drafting’. Albert [65]p. 344
Riders have been known to collude or ‘fix’ the out-come of races, offering some compensation in return forthe assistance of other riders [61, 64]. Mignot [61] usesthe example of Miguel Indurain and Claudio Chiappucciin the 13th stage of the 1991 Tour de France to illustratefixing, where Indurain allowed Chiappucci to win thestage on the premise that he contributed to the work-load of the breakaway group, helping ensure the groupstayed clear of the main peloton and enabling Indurainto achieve his aim of securing a classification jersey.
Team Hierarchy: OpportunityResearchers seeking to examine the performance of cy-clists in real-world competition must also understandthat a rider’s performance may depend on whether theyare given the opportunity to race for the win. Profes-sional road cyclists who are not team leaders often havetwo conflicting goals: seeking to contribute to their teamsuccess while on a secondary level aiming to contributeto their own personal success and career longevity [49].Professional road cycling teams may consist of up to 30riders, with only eight or nine of these riders permittedto start in Grand Tours, and entries are also limited inother ProTour events. Team management will normallyselect a team and a ‘lead’ rider based on the characteris-tics of their riders relevant for the race features and im-portance [47]. Team leaders are generally more
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 12 of 18
successful than other cyclists across a racing season, butwhether this is due to the team leader’s superior individ-ual characteristics or because they benefit from the workof their teammates is unclear [49]. Cyclists riding in sup-port of their team leader (termed ‘domestiques’) have lit-tle incentive to continue racing once they have fulfilledtheir expected duties. Domestiques are known to ‘sit up’once they have executed their support task(s), no longerseeking to remain competitive and only seeking to finishthe race within the time cut-off to ensure they are per-mitted to start the following stage [K.E. Phillips, unpub-lished observations].
The Global DimensionElite cycling competitions take place within a complexsocial and organisational setting, where economic, socio-cultural and historical forces shape behaviour and deci-sions made by governing bodies, race organisers, cyclingteams, and the cyclists themselves [96]. Researchers inthe fields of economics, management and sociology haveprovided some insight into how organisational changesand reforms, largely driven by attempts to improve theglobalisation and professionalism of the sport, have im-pacted the performance of cyclists in recent decades [49,51, 64, 66, 69, 96]. To date, authors have focused almostexclusively on male professional road cycling.
Economic Features: Revenue Generation, TV Rights,SponsorshipVarious authors have explored the economic drivers ofmale professional road racing, detailing how the compet-ing interests of multiple stakeholders shape the structureof professional racing and influence the competitivepressures on teams and riders [64, 66, 96]. As the pri-mary governing body, the UCI formulates (and adapts)the rules of racing, regulates the classification of racesand points ranking systems, and issues racing licenses toteams and riders. Organisational changes and reformsover the decades, designed by the UCI to improve theglobalisation and professionalism of the sport, have ledto major changes in racing behaviour by cyclists andtheir teams (see ‘Authoritarian Features: Governing Bod-ies and Race Organizers’ section) [96]. Race organisersalso play a key role in shaping the structure of profes-sional road racing, with many of the most prestigiousevents controlled by private corporations such as theAmaury Sports Organisation (ASO) [96]. Race organisersare known to alter the design of a race route to ensurehigh competitive intensity between riders, with the aimof increasing spectator interest to generate revenue, at-tract sponsors, and secure interest in the purchasing ofTV rights [52, 97, 98]. External stakeholders, such asteam sponsors and the media, also have a strong interestin ensuring the attractiveness of the contest, driven by a
desire to increase TV viewership and ensure brand visi-bility [52]. As professional race teams are funded almostentirely from sponsorship, team managers have a strongincentive to promote sponsors’ visibility during a raceand deliver race results, in order to ensure the ongoingfinancial viability of a team [96]. For riders, professionalrace contracts are often short, and while riders can par-ticipate in races only as part of a team, there is also astrong incentive for individual cyclists to perform well inorder to secure a contract [50]. Aubel [57] argues thatthere is a potential link between the economic positionof a team or rider and doping, reporting sanctionedriders were 5.8 times more likely to have experiencedcareer interruptions or 61% more likely to have had mul-tiple team changes (see ‘Subversive Behaviours: thePrevalence of Doping’ section).Similar economic drivers of revenue generation via
spectator engagement appear to be responsible for re-forms made to other disciplines of cycling, namely BMXand track cycling (see ‘Authoritarian Features: Govern-ing Bodies and Race Organizers’ section). For example,the removal of the solo time-trial events from the Olym-pic track-cycling program and introduction of the 2-daymulti-race Omnium competition were seen as a reflec-tion of the UCI and IOC’s desire to deliver more en-gaging and tightly fought contests for spectators [45].
Authoritarian Features: Governing Bodies and RaceOrganisersGoverning bodies and race organisers are known to im-plement changes to the regulations of cycling competi-tions in attempts to improve the competitive intensity ofracing and thereby increase public interest in cycling[52, 61]. Reforms made to rules and racing regulationsover the decades have allowed researchers to observeand analyse the subsequent changes in racing behaviourand performance [48, 58, 96].A particularly influential reform was the introduction
of a ranking system by the UCI in 1984, which was de-signed in part to increase competition and reduce collu-sion amongst professional road racing riders and teams[56]. UCI ranking points had a major influence on theway teams and riders prepared and raced [52, 56, 64,96]. In races that had traditionally been fixed or used fortraining, teams became competitive, needing to accumu-late ranking points across a wider number of racesthroughout the competitive season to gain entry to themore prestigious events [64, 96]. A secondary aim of theUCI was to globalise cycling, and the ranking system en-sured teams competed in races outside of Europe, thetraditional stronghold of the sport [52]. Brewer [64] de-scribed how the increase in competitiveness resulted inan effective lengthening of the competitive racing seasonand modified the pressures on teams and riders. For
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example, team managers were compelled to build asquad of cyclists capable of success across a wider rangeof races, rather than the more traditional method ofstructuring a team around the support of one key riderfor the more prestigious event(s) [64]. For the cyclists, ahigher expectation to perform well in races across thefull competitive season increased the pressure to remainin top physical condition, driving advances in trainingtechniques and technology, as well as inadvertently en-couraging subversive behaviours such as doping [56, 64](see ‘Subversive Behaviours: the Prevalence of Doping’section).Another influential reform was the introduction of a
ban by the UCI on the use of radio technology in someprofessional road races from 2011 to 2015, which wasalso seen as an attempt to improve the competitive in-tensity of the sport and prevent racing from becomingtoo predictable [48]. Larson and Maxcy [48] found thechange in information flow caused by the radio ban af-fected race structure and outcome, although they couldnot determine conclusively whether changes in the like-lihood of breakaway success were due to absence ofradio communications or changes in the cycling sub-culture across the period examined (see ‘Social Mecha-nisms: Unofficial Norms and Peloton Sub-Culture’ sec-tion). As a side note, the authors found the use of radiotechnology and likelihood of breakaway success werestrongly modified by terrain variables (see ‘CompetitionFeatures: Terrain, Environment, and Competition Struc-ture’ section).Within a particular country, the regulations of national
governing bodies impact the development, recruitment,and performances of elite cyclists. For example, Zheng [58]provided an interesting commentary on the relative under-performance of Chinese cyclists in Olympic and UCI Pro-Tour cycling events, suggesting the under-representation ofChinese cyclists was due to organisational elements of theChinese sporting system. In comparison, a strong talent de-velopment program within the Australian national systemwas apparently responsible for a 50% increase in the con-version rate of junior world championship athletes to suc-cess in the senior divisions [63].
Reward Mechanisms: Multiple Prize IncentivesThe introduction of secondary prizes in the Tour deFrance by the ASO is an example of reward mechanismsused to encourage cyclists to compete and create a dy-namic spectacle that will draw public interest [61, 69].Secondary prizes, such as time bonuses, intermediatesprints, and combative rider prizes, provide an incentiveto cyclists who are not in contention for the overall win,by presenting them with opportunities to gain rankingpoints or media exposure while adding to spectatorinterest [98]. As riders vying for the overall win in multi-
day stage races are likely to adopt strategies of energyconservation and non-competitiveness in the early or flatstages, secondary prizes help maintain a level of com-petitive intensity by incentivising the other riders.Formal rules and regulations can also inadvertently
provide a disincentive for teams and riders to compete.Rebeggiani and Tondani [56] outlined how the UCI in-advertently encouraged non-competitive behaviour fromprofessional teams across the racing season by restrictingthe total number of professional road teams in the UCIProTour, thereby making it a closed league. Without therisk of relegation to a lower league, teams were concen-trating their best efforts on races organised in theirsponsors’ home countries or on only a few other raceseach season. The authors argued the UCI would betterachieve their aim of improving the competitive intensityof racing by opening the league and increasing the num-ber of ProTour teams, thereby providing an incentive tocompete in races teams may otherwise not target. TheUCI has adopted a version of this recommendation inrecent years [99].
Social Mechanisms: Unofficial Norms and Peloton Sub-CultureIn addition to the formal rules governing the competi-tion, a cyclist’s behaviour and decisions are constrainedby unofficial norms or social mechanisms that existwithin the peloton [65, 69]. Unofficial norms emergewhen it is beneficial for race participants to enforce asubset of social rules, driven by a collective desire to en-sure the profitability of the sport [62]. Unofficial normsdictate the shared expectations of how cyclists shouldbehave within the peloton and individuals who do notabide by these social expectations are subjected to sanc-tions by other members of the peloton [62, 69]. For ex-ample, if a race favourite or race leader should suffer amechanical issue, the unofficial norm dictates that theother cyclists should not make use of the opportunity tobenefit themselves by making an attacking move [62,85]. Cyclists who disobey this norm are often punishedby the peloton, who collectively refuse to cooperate withthe ‘defector’, denying them TV exposure (e.g., by chas-ing down any breakaway attempt), and in more extremecases, by physically interfering with the defectors’ abilityto ride [62]. Albert [65] conducted a sociological exam-ination of the peloton to explore the influence of socialdynamics on the performance of cyclists in road races,seeking to understand why riders share the lead, why apeloton may allow a breakaway to form, and why somebreakaways succeed when others fail. The author con-cluded that using formal rules to explain the constraintson cyclist behaviour is insufficient to capture the experi-enced reality of the sport, arguing that the informal so-cial norms must be considered if we are to understand
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racing behaviour. Fink and Smith [62] built on this workby examining the unofficial norms that govern behaviourin elite road cycling and by explaining how these normsaffect the profitability of the Tour de France for race or-ganisers and maintain the attractiveness of the event forspectators.
Subversive Behaviours: the Prevalence of DopingCycling has been characterised by numerous dopingscandals and the phenomenon of doping, and its effectson cycling have been examined from a number of angles[53, 54, 57, 59, 64]. The influence of doping on the per-formance of elite cyclists is difficult to quantify becausethere is no accurate way of knowing who doped, to whatextent, and when [98]. To examine the potential influ-ence of doping on race performance and assess the ef-fectiveness of anti-doping measures, some researchershave used secondary measures of performance, such aschanges in the average speed of Grand Tour winnersacross the decades [53, 54]. The decrease (or plateau) inaverage speed of Grand Tour winners since the early2000’s has been attributed to strengthened anti-dopingmeasures [54, 100], but changes in the socio-cultural en-vironment in which riders compete provide equallyplausible explanations [59, 64]. Such changes includemodification of team structure, sponsorship, inter-teamdynamics and rider preparation [59, 64, 96].Fink and Smith [62] outlined how the challenges asso-
ciated with monitoring and preventing doping amongstcyclists at an organisational level resulted in specific so-cial norms developing amongst teams and riders. Asdoping behaviours were not able to be observed directly,cyclists were uncertain who was doping, so the ‘clean’cyclists could not collectively monitor and punish thoseusing illicit substances [64]. Instead, a social normknown within the sport as the omerta developed, whereorganisers and riders both accepted doping was preva-lent, but the established social norm was not to discussit publicly, in order to protect the sport and the revenueit generated [62, 64]. Economists have used game theoryto explain how teams and riders rationalised doping,where the economic and financial benefits of improvedperformance, along with prohibitively high sanctioningcosts, resulted in a Nash equilibrium in which it wasmost profitable for all cyclists to dope [62, 98]. Brewer[64] drew links between authoritarian, reward, and socialmechanisms and the increasing incentive to dope, par-ticularly for teams at risk of losing sponsorship or forriders at risk of not securing an ongoing professionalcontract. Aubel et al. [57] found a higher risk of dopingamongst cyclists who began their professional careersbefore 2005, but noted the reasons for the decliningnumber of sanctioned riders since 2005 were ambiguous.The reduction could be due to improved anti-doping
measures, including the introduction of the biologicalpassport in 2008, changes to the structure of the WorldTour, changes to the socio-cultural norms of the pelo-ton, or ‘improvements’ in the doping practices of teamsand athletes making the use of banned performance en-hancing substances harder to detect.
History and PrestigeBrewer [64] and Mignot [61] provided thorough over-views of the history of professional road cycling and ex-plored how changes in global mechanisms across thedecades have led to changes in rider performance. Asoutlined in ‘Economic Features: Revenue Generation,TV Rights, Sponsorship’ and ‘Subversive Behaviours: thePrevalence of Doping’ sections, changes made by gov-erning bodies aimed at increasing the commercialisationand globalisation of the sport altered the pressures onteam managers and riders, leading to changes in teamorganisation and rider preparation, fostering changes inthe social dynamics of the sport and inadvertently result-ing in the rationalisation of doping practices. Thegrowth of commercial sponsors led to increased profes-sionalism, enabling riders to increasingly specialise asthe racing calendar gradually increased in length and in-tensity [64]. Furthermore, the roster of team ridersshifted from being organised around the support of asingle team leader to an organisation of sub-teams thattrained for peak performance in specific races or GrandTours [61]. Team managers started selecting and orga-nising sub-groups of riders from their team roster forsuccess in particular races, targeting either a GrandTour, the Classics (Milan-San Remo, Tour of Flanders,Paris-Roubaix, Liège-Bastogne-Liège and Tour of Lom-bardy) or races with regional or national significance[61]. Top cyclists and their support riders then adjusttheir training and periodisation to peak for these par-ticular events [56, 97]. While evidence of improvementsin cyclist performance due to race prestige remains pre-dominantly anecdotal, teams certainly appear to placeincreased importance on performance in particular racesand tours [61, 64]. In professional road cycling, the Tourde France remains the most prestigious competition,while in other cycling disciplines the World Champion-ships are considered the most prestigious event in non-Olympic years [61].
Other Societal and Organisational FeaturesThe preceding sections of this review have dealt withperformance of individual cyclists. There are only a fewcycling disciplines where team performance is of inter-est, and in professional road cycling there has been onlyone publication addressing the determinants of teamperformance. Prinz and Wicker [60] applied conceptsfrom management research and labour markets to assess
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the effect of team composition on the performance ofprofessional road cycling teams in the Tour de France.Having a diverse range of tenure (length of time in team)was positively associated with team performance, whichthe authors suggested was due to internal competitionfor selection between team riders raising performancestandards or preventing stagnation in those with longercareers. Age diversity of team riders had a positive (al-beit non-significant) effect on performance, while diver-sity in nationality and language had little effect. Anotherexplanation for these relationships is that early-careerriders will join any team, but as their performance im-proves, they are likely to move to teams where they havemore opportunities. Prinz and Wicker also found that awide range of body mass index (BMI) scores was linkedto poorer team performance, likely due to overall per-formance indices favouring hill climbers, who generallyhave lower BMI. Previous Tour de France participationand previous stage wins were not significantly related toteam performance, but the number of riders finishingthe Tour de France did matter, which likely reflects thesharing of workload between team members. The au-thors concluded that team managers seeking team suc-cess needed to consider the composition of their teams,selecting riders capable of finishing the race and with adiverse range of tenure [60].
LimitationsAs outlined in ‘Inclusion Criteria’ section, a narrative-synthesis approach was used to systematically review theselected articles and formulate dimensions and features.Of the articles that met the inclusion criteria, a majorityanalysed the competition performances of road cyclists,and in particular, male professional road cyclists. Conse-quently, some of the dimensions and features identifiedin this article are based on research in a single cyclingdiscipline (see Table 1 for detail). There may also be fac-tors affecting the performance of cyclists that are beingused in competition but that have not been the subjectof published research; for example, teams who have de-veloped new ergogenic aids or improvements in technol-ogy are unlikely to publish their findings. Finally, severalfeatures known to enhance cyclists’ performance in non-competition settings have received limited attention inthis review because the extent of their implementationand effects in actual competitions are unknown.
ConclusionsThe aim of the current study was to improve our under-standing of how performance emerges in elite cyclingcompetitions, with a particular focus on the effects ofcontextual factors, presence of and interaction with op-ponents, environmental conditions, competition struc-ture, and socio-cultural, economic and authoritarian
mechanisms. The challenges associated with modellingthe performance of cyclists in the complex environmentsthat define cycling racing become evident when the fea-tures and dimensions influencing race performance arecollated. In particular, there are limitations in using atraditional reductionist approach to understanding theperformance of cyclists in elite racing. Sports perform-ance research needs to be 'holistic, idiographic and takea process-oriented approach' that emphasises 'the ana-lysis of emergent patterns of coordination and controlunderpinning performance' [9, 16, 101–103]. Movingforward, the challenge is for sports performance re-searchers to find methodologies and techniques that en-able elements of performance to be considered inconcert rather than in isolation, and for the complexinterplay and interactions between dimensions and fea-tures of racing to be better understood. We must searchfor data collection and analysis techniques that allow usto adequately account for and explain the interactionsand mechanisms underpinning successful cycling per-formance in racing contests [7–10, 100, 104].The breadth of scientific disciplines encompassed in
the present review provides some insight into how com-bining approaches, by using mixed methods and/orinterdisciplinary approaches, would enable ‘multiplevalid accounts of a phenomenon’ by improving trust-worthiness, dependability, confirmability, transferabilityand authenticity in research [105]. There is a place forquantitative laboratory-based research that examinesspecific elements of performance, just as there is equallya place for qualitative investigations exploring the nu-ances and meanings that shape the decisions and actionsof athletes in competition [20].To be competitive at the elite level, a cyclist needs a
high level of physiological fitness, but team managers,coaches and athletes seeking to improve performanceshould give attention to features beyond those of the in-dividual. Competitive performance is also constrained bytactical features emerging from the inter-personal dy-namics between cyclists, strategic features related to thecompetition and global features related to the organisa-tion of the sport.
AbbreviationsASO: Amaury Sports Organisation; BMI: Body mass index; UCI: Union CyclisteInternationale
AcknowledgementsThanks to Dr. Rob Corban for his thoughts and feedback on the manuscriptprior to submission.
Authors’ ContributionsResearch design and concept were drafted by KEP and critically reviewedand refined by WGH. Literature search, study selection, synthesis of findings,initial conceptual framework development and initial draft manuscript allconducted by KEP. Subsequent refinements to conceptual framework,further manuscript development and finalised drafts done by KEP and WGH.
Phillips and Hopkins Sports Medicine - Open (2020) 6:23 Page 16 of 18
FundingNo funding was received for this systematic review
Availability of Data and MaterialsNot applicable
Ethics Approval and Consent to ParticipateNot applicable
Consent for PublicationNot applicable
Competing InterestsThe authors Kathryn E. Phillips and William G. Hopkins, declare that theyhave no competing interests.
Received: 27 January 2020 Accepted: 17 May 2020
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