The effects of different doses of caffeine on endurance cycling performance

Desbrow, Ben, Biddulph, Caren, Devlin, Brooke, Grant, Gary D., Anoopkumar-Dukie, Shailendra and Leveritt, Michael D. (2012) The effects of different doses of caffeine on endurance cycling performance. Journal of Sports Sciences, 30 2: 115-120. doi:10.1080/02640414.2011.632431

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Author Desbrow, Ben
Biddulph, Caren
Devlin, Brooke
Grant, Gary D.
Anoopkumar-Dukie, Shailendra
Leveritt, Michael D.
Title The effects of different doses of caffeine on endurance cycling performance
Journal name Journal of Sports Sciences   Check publisher's open access policy
ISSN 0264-0414
1466-447X
Publication date 2012
Year available 2012
Sub-type Article (original research)
DOI 10.1080/02640414.2011.632431
Volume 30
Issue 2
Start page 115
End page 120
Total pages 6
Place of publication Oxon, United Kingdom
Publisher Routledge
Collection year 2013
Language eng
Formatted abstract
This study investigated the effects of two different doses of caffeine on endurance cycle time trial performance in male athletes. Using a randomised, placebo-controlled, double-blind crossover study design, sixteen well-trained and familiarised male cyclists (Mean + s: Age = 32.6 + 8.3 years; Body mass = 78.5 + 6.0 kg; Height - 180.9 + 5.5 cm V O2 peak - 60.4 + 4.1 ml · kg 7 -min7) completed three experimental trials, following training and dietary standardisation. Participants ingested either a placebo, or 3 or 6 mg · kg body mass of caffeine 90 min prior to completing a set amount of work equivalent to 75% of peak sustainable power output for 60 min. Exercise performance was significantly (P 5 0.05) improved with both caffeine treatments as compared to placebo (4.2% with 3 mg · kg body mass and 2.9% with 6 mg · kg body mass). T he difference between the two caffeine doses was not statistically significant (P=0.24). Caffeine ingestion at either dose resulted in significantly higher heart rate values than the placebo conditions (P 5 0.05), but no statistically significant treatment effects in ratings of perceived exertion (RPE) were observed (P- 0.39). A caffeine dose of 3 mg · kg7 body mass appears to improve cycling performance in well-trained and familiarised athletes. Doubling the dose to 6 mg · kg7 body mass does not confer any additional improvements in performance.
Keyword Athletes
Dose response relationship
Endurance
Exercise
Glucose
Methylxanthines
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Human Movement and Nutrition Sciences Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 22 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 27 Mar 2013, 12:42:00 EST by Michael Leveritt on behalf of School of Human Movement and Nutrition Sciences