Abstract
Purpose: Caffeine, often in the form of coffee, is frequently supplemented by athletes in an attempt to facilitate improved performance during exercise. The aim of the present study was to investigate the effectiveness of coffee ingestion as an ergogenic aid prior to a one-mile (1609 m) race. Methods: In a double-blind, randomised, crossover, placebo-controlled design 13 trained male runners completed a one-mile race 60 minutes following the ingestion of 0.09 g·kg-1 coffee (COF), 0.09 g·kg-1 decaffeinated coffee (DEC), or a placebo (PLA). All trials were dissolved in 300 ml of hot water.Results:The race completion time was 1.3% faster following the ingestion of COF (04:35:37 ± 00:10:51 mm·ss) compared with DEC (04:39:14 ± 00:11:21 mm·ss; P=0.018; 95%CI: -0.11, -0.01; d=0.32) and 1.9% faster compared with PLA (04:41:00 ± 00:09:57 mm:ss; P=0.006; 95%CI: -0.15, -0.03; d=0.51). A large trial and time interaction for salivary caffeine concentration was observed (P
Original language | English |
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Pages (from-to) | 789-794 |
Number of pages | 6 |
Journal | International Journal of Sports Physiology and Performance |
Volume | 13 |
Issue number | 6 |
DOIs | |
Publication status | Published (VoR) - 31 Jul 2018 |
Funding
The authors express appreciation to Professor Derek Renshaw for his input on the salivary caffeine analysis. Funding for this research was received from The Institute for Scientific Information on Coffee. The result of this study does not constitute endorsement of the product by the authors or the journal.
Funders | Funder number |
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Institute for Scientific Information on Coffee |
Keywords
- Caffeine
- Ergogenic aid
- Competition
- Middle distance running