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Autonomic nervous system activity andPerformance in competitive swimming
SynapseThe Research Group
Martin Garet, Nicolas Tournaire,Frédéric Roche, Renaud Laurent,
Jean-René Lacour, Jean-Claude Barthélémy,Vincent Pichot
Saint-Etienne
Facultéde MédecineJacques Lisfranc
Saint-EtienneUniversité Jean Monnet
PPEH Research GroupCHU Saint-EtienneFaculté de Médecine Jacques LisfrancUniversité Jean Monnet
UFR STAPS Clermont-Ferrand, France
Autonomic NervousSystem
- Parasympathetic
- Sympathetic
R-R variability in the recovery phase after a strenuous physical exercise
Furlan et al. (1993)
Before Exercise
Exercise
May determine cumulated decrease Rebound
Exercise, cumulated fatigue
Pichot V. et al. , Pflügers Archiv, 2002
W1 W2 W3 W4Rest
**
0
50
100
HF
wav
elet
s (%
)
W1 W2 W3 W4Rest
**
Athletes Workers
Pichot V. et al. Med Sci Sports Exerc, 2000
Training. Improve performance.
rest rest rest
Load
HRV UnfavorableOvertraining
TrainingTrainingTraining
HRV FavorableLoad
Rebound
Cycle
Overload
Pichot, Med Sci Sports Exerc, 2000 Pichot, Med Sci Sports Exerc, 2002Pichot, Pflügers, 2002
?
Kenney W.L. Exercise PhysiologyCurrent Selected Research, 1988
VO2max, mL.kgMM-1.min-1
.
ln V
HP
(m
s)
7
6
5
4
3
30 40 50 60 70 80
ANS - Performance
HR
V (
Pto
t)
30 40 50 60 70
2000
10000
8000
6000
4000
VO2max, mL.kgMM-1.min-1.
Pichot V. et al. Med Sci Sports Exerc, 2002
Cross-sectional Longitudinal
Study
ANS – Training Load
ANS - Performance
Group level
Individual level
Individual monitoring
Tapering
Overtraining prevention
?
Population- 7 regional-level swimmers (4 boys, 3 girls)- 16.6±0.5 years- 6.4±0.9 years of practice - 400 m freestyle
Timing of measurements
HRV HRV HRV HRVHRV HRV
W0 W5W4W3W2W1
Perf 3Perf 1 Perf 2
RP1 TP RP2
Baseline
Resting TaperingTraining Period
CERT
CE
RT
0
20
40
60
80
100
120
140
160
0
1
2
3
4
5
6
7
8
9
10
W1 W2 W3 W4 W5
Training load
Tra
inin
g l
oad
Training load
- 69.1 % during W4 and W5
**
**
§
175
100
125
150
200
75
25
50
0Perf 1 Perf 2 (W3) Perf 3 (W5)
115.25±57.48%71.30±52.60%
HF
WT (
% P
erf
1)
ANS evolution group level
NS
NS
175
100
125
150
200
75
25
50
0
S3
S4
S1
S7
S2
S5
S6 S4
S2S6
S7
S3S5S1
Perf 1 Perf 2 (W3) Perf 3 (W5)
HF
WT (
% P
erf
1)
ANS evolutionindividual level
Rest RestTraining
5’10 5’04 = - 6 s
5’03 4’54 = - 9 s
5’10 5’16 = + 6 s 100
Relative values, HF%
148 %
-35 %
254 %
P1 P3
P1 P3
Garet M. et al. In press, 2004
±Rebound - Performance
P2
-6 -4 -2 0 2 4 6 8 10
5
10
15
20
0
-10
-5
Delta HF (WT)
Delta Perf = -1.232 - 1.625 * Delta HF (WT)R2 = 0.50
Del
ta P
erf
(s)
Optimize training loadOptimize tapering
Conclusion
Highly individual
- ANS answer to training load- Supercompensation- Speed of rebound
Common rule: High correlation between:
- ANS activity level and performance- Respective variations in ANS and in performance
Engineers
Vincent PICHOTDavid DUVERNEYSébastien CELLEAnestis ANTONIADIS
Neurophysiologist
Frédérique BERTHOLON
MD, PhD
Jean-Claude BARTHELEMYFrédéric ROCHE Frédéric COSTESDavid CHARIERJean-René LACOUR
SynapseResearch Group
PhD Students
Nicolas DESVIGNEMartin GARETMarc CHARLESSébastien CELLEFrancis DEGACHE
E-mail: martingaret@hotmail.com
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