Sacra Men To Final Presentation on Caffeine2

8/2/2019 Sacra Men To Final Presentation on Caffeine2

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Caffeine and SportsPerformance: Whats New?

Presented by:Jenalyn Eve L. Sacramento, RND


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Extra Energy

Accdng tolegend:Ethiopian

Shepherds

HISTORY OF CAFFEINE

Coffee use started a

searly as 9 th Century

In Ethiopia

Goats appear to danceTried eating the seeds

CoffeeBeans

Influenceof caffeine


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US National Coffee Drinking Trends 2011

55% to 90% of the U.S.

population is consuming coffeeevery day

In the United States,

More than 20% of men and 15% of women who exceededthe recommended maximum of CAF per day

These data exemplified the renowned acceptance of public on coffee.


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Product Serving Size(unless

otherwisestated)

Milligrams of

Caffeine(approxi

matevalues)

oz mlCoffee

Brewed 8 237(1cup)

135

Roastedandground,percolated

8 237 118

Roastedandground,filterdrip

8 237 179

Roastedandground,decaffeinated

8 237 3

Instant 8 237 76 - 106Instantdecaffeinated

8 237 5

Sources of Caffeine

135

3

100158 182

300 8

35.55

75.84

200

0

50

100

150

200

250

Caffeine (

Source: Nancy Clarks Sports Nutrition Guidebook, 4Edition, 2008 & Harlan, B.F.2000. Caffeine and Nutrition.


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Caffeine Metabolism

LipolysisUrine VolumeDilate Blood Vessels

Smooth Muscle

Relaxation

Caffeine common name for trimethylxanthine

Absorption Rate 15 to 45 minutes

Metabolism - Liver

Excretion Kidneys and Urinary Tract


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How does caffeine works?

Central Nervous System

Metabolic

Hormones

Muscular

Cardiovascular

Renal

Pulmonary

+/-

Source: Bulent Sormen et.al. Caffeine Use inSports: Considerations for the Athlete. Journal of Stren th and Conditionin Research 2008

CAFFEINE

SPORTSPERFORMANCE

CNS

METABOLIC

HORMONES

MUSCULAR CARDIOVASCULAR

RENAL

PULMONARY

VENTILATION

CAFFEINE

SPORTPERFORMANCE

SITE OF ACTION CAUSE EFFECT

CNS

Blocks adenosine receptors Speeds up activity of cells

Hormonal Catecholamine, cortisol,beta endorphins

Alert, ActiveDelays PainDelays Peripheral Fatigue

Metabolic Sympathetic response Stimulates lipolysis

Muscular Faciliates Ca lcium transport Stimulates neural activationof muscle contractionCardiovascular Production of epinephrine Vasodilation of blood vessels

Pulmonary Sympathetic response bronchodilation of alveoliRenal Sympathetic response Mild diuretic effects


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Lists caffeine as a

multiple purpose generally recognized assafe food substance

Confirmed that caffeine is indeedergogenic but is specific to condition of

athleteClassified caffeine as an ApprovedSupplement

List caffeine as prohibited drug s ince2004 . Thus, Caffeine is still in the watchlists.

Banned If the concentration in urineexceeds 15 micrograms/ml

STAND OF DIFFERENT SPORTS ORGANIZATIONS ON CAFFEINE


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Awareness and Use of Caffeineby Athletes

Source: Den Desbrow et.al. Awareness and Use of Caffeine by athletescompeting at the 2005 Ironman Triathlon World Championships. InternationalJournal of Sport Nutrition & Exercise Metabolism. Vol 16. Issue 5. October

Questionnaires 140 athletes

100 athletes (71%)correctly identified that caffeine use in

UNRESTRICTED

15 ATHLETES (11%)Is not planning to use caffeine before the race

20 umol/L or > 3 mg/kg BW

52 % did notknow the

optimal dose

The most common sources forinformation on caffeine

Self-Researched/Experimentation 44%

Fellow Athletes 42%

Magazines 38%

Journal Articles 33%

Most popular caffeinated choices

COLA 78%

Caffeinated gels 42%

Coffee (Pre-race) 37%

Energy Drinks 13%

No Doz Tablets 9%


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Does Drinking Red BullIncrease Manual Dexterity?

Published in Biomedicine International (2011) 2:2-4

Purpose: This study aims to evaluate the

effects of drinking one can of Red Bullenergy drink on manual dexterity using astandardized 9-hole peg test

Author: Isaiah Tubbs, R. Shane Tubbs


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23 Volunteers

Materials and Methods

18 Placebo 5 Control

9-hole peg test

250 ml Red Bull 250 ml WaterWaiting time:

30 minutes

Tool: Stopwatch

Statistical Analysis: Statistica Version 5.Turkeys post hoc test p

Characteristics of Subjects

Healthy Subjects (with written consent) Not a chronic consumer of caffeine

PRE-CONSUMPTION

POST-CONSUMPTION

PRE-CONSUMPTION

POST-CONSUMPTION


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Results:

The maximal times taken by control subjects to complete thetest were slightly greater than those of the experimental group

but the difference did not reach statistical significance

EXPERIMENTAL GROUP

w/ 80mg CAFFEINE

CONTROL GROUP

WATERPre-consumption (Right Hand)

15.92 s Pre-consumption (Right Hand)

16.9 s

Pre-consumption (Left Hand)16.6 Pre-consumption (Left Hand)18.8 sPost-consumption (Right Hand)

14.9 s Post-consumption (Right Hand)

17.8 s

Post-consumption (Left Hand)15.83

Post-consumption (Left Hand)17.3 s

14.9s 17.8s

15.83s 17.3s


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The Effect of Caffeine Ingestion on AnaerobicPerformance in Moderately Trained Adults

Author: Michael J. Duncan

Purpose: To examine the impact of caffeine

ingestion on anaerobic performance in agroup of moderately trained adults.

Published in Serbian Journal of Sports Sciences, 2009


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14 participants

Research Design: Within-Subjects, Repeated Measures Design

WINGATE ANAEROBIC TEST

CONTROLNo substancewas ingested

CAFFEINE5mg/kg CAFdiluted in 250mlartificiallysweetened drink

PLACEBO250 mlartificiallysweeteneddrink

CONSUMED 60 MINUTES BEFORE EACH EXERCISE TRIAL

MONARLKS ANAEROBIC TESTING SOFTWARE 1.0 Measured PPO and MPOPolar Electro Oy a heart rate telemetry that measured PHR

Borg 6-20 RPE Scale- measured RPELactate Pro, - measured BL

Stat. Analysis:

ANOVABonferroni

10 min warm up :Dynamic & staticstretches The exercise test is consisted of a 30 second Wingate

Anaerobic Test completed on a Monark Peak bike.


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Subject Characteristics: Free from any of musculoskeletal

pain and disorders Competed in team games ( rugby

union, football, basketball) >12 hours week programmed PA

Mean Age: 21.8 y/o

TO LIMIT INTERNAL VALIDITY THREATS: Refrain from vigorous exercise a day before Must not consume caffeine after 6:00pm

the night before testing Alll testing took place between 9:00am to

12:00 pm at the same time. Participants is asked to complete 24 hour

dietary and exercise recall before each trial Were provided a list of caffeine-containing

products so they could refrain from caffeineintake


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Results:Peak Bla, RPE and PHR across conditions

11.5 12.0* 11.8*18.5 18.0* 18.6178.8 180.6 180.5


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CAFFEINE

Mean Diff: 70.2 p = 0.003

PLACEBO

Mean Diff: 42.2p = 0.005

Peak power output across conditions

Peak power output is significantly greater in caffeine condition

Average Power is the average power over the 30 second test.


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Multiple Effects of Caffeine on SimulatedHigh-Intensity Team Sport Performance

Author: Gene R. Stuart

Published in Medicine & Science in Sports and Exercise, 2005

Purpose: To investigate effects of caffeine

in a performance test stimulating physicaland skill demands of a rugby union game .


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Research Design:Double-blind, randomized, crossover design

9 M rugby players

6mg /kg BM of CAF

taken 70 minutes prior test

RUGBY TEST It is consisted of 14 circuits w/c is divided in totwo 40 minute halves w/ a ten min half time restIn each half time, there is 7 circuits made up of 11 stations.

Ethically Approved by: AUT Ethics Committee

PLACEBO6mg/kgdextrose incapsuleform

Wash Outperiod: 1 week

Venue: Indoorsports stadiumTemp: 21-23 C

10 min warm up:JoggingStretchingSome touch rugby

Plasma Caffeine& Epinephrine

Statistical Tool:ProcMized in theStatistica


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Average performance values for the varioustasks obtained in all circuits

of the test in the placebo condition

Eff f C ff i d h R d i i


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Effect of Caffeine and the Reduction inFatigue with Caffeine (Relative to Placebo)

There were enhancements of mean performance for all measuresexcept Drive 2 power, 20-meter sprint and offensive sprints.


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PLACEBO

CAFFEINE

PLACEBO

CAFFEINE

This figure shows the performance in three of the tasks of the rugby testfollowing caffeine and placebo ingest ion.


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CAFFEINE

PLACEBO


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Summary New finding: There is a 10%

improvement in the ability to passballs accurately while pressured topass rapidly.

The only clear unfavorable effect withcaffeine in this present study was forDrive 2 , which showed increasedfatigue in the second half comparedwith the first half .


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1. Red Bull energy drink has no short-termeffects on manual dexterity

2. Caffeine lowers Rating of PerceivedExertion during high-intensity AnaerobicExercise

3. There is a 10% improvement in the

ability to pass balls in team sports underpressure.4. A potentially useful supplement for

games such as rugby, football, soccer,hockey, basketball, and tennis.

Evidenced-Based StudiesSummary:


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RECOMMENDATION Caffeine should be taken 1 hour prior

performance. If you are caffeine consumer, refrain

from eating caffeinated products 2 days

before the game. Recommended Type of Sport: Endurance

Activities that lasts 60 minutes or longer

Recommended Caffeine intake forathletes: (~3-6mg/kg ) (ISSN) Avoid taking too much caffeine prior the

game: 500mg of caffeine or >6mg/kg


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Take Home Message

Proper Diet and Proper Trainingare the best ways to prepare for agame thus, ergogenic aid like

caffeine could also help in a waybut you should not solely basedyour performance to an ergogenic

aid because these ergogenic aid isstill just a SUPPORT for yourathletic needs.

BE A RESPONSIBLEATHLETE.

Documents

Sacra Men To Final Presentation on Caffeine2