Influence of a caffeine mouth rinse on sprint cycling following glycogen depletion |
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| Authors: | Joseph Kizzi Alvin Sum Fraser E Houston |
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| Institution: | 1. School of Human Sciences, London Metropolitan University, London, UK;2. Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA |
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| Abstract: | Attenuated performance during intense exercise with limited endogenous carbohydrate (CHO) is well documented. Therefore, this study examined whether caffeine (CAF) mouth rinsing would augment performance during repeated sprint cycling in participants with reduced endogenous CHO. Eight recreationally active males (aged 23?±?2?yr, body mass 84?±?4?kg, stature 178?±?7?cm) participated in this randomized, single-blind, repeated-measures crossover investigation. Following familiarization, participants attended two separate evening glycogen depletion sessions. The following morning, participants completed five, 6?s sprints on a cycle ergometer (separated by 24?s active recovery), with mouth rinsing either (1) a placebo solution or (2) a 2% CAF solution. During a fifth visit, participants completed the sprints without prior glycogen depletion. Repeated-measures ANOVA identified significant main effect of condition (CAF, placebo, and control P?P?P?P?P?P?
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| Keywords: | Anaerobic carbohydrate ergogenic high intensity repeated sprint exercise |
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