Effects of caffeine on anaerobic exercise in boys

Pediatr Exerc Sci. 2012 May;24(2):210-9. doi: 10.1123/pes.24.2.210.

Abstract

The effects of caffeine on anaerobic exercise in young boys was investigated. Twenty-four healthy 8-10 year old boys participated in a randomized double-blind, double-crossover, counter-balanced study. Each subject received the caffeinated drink (CAF--5 mg · kg(-1)) or placebo (PL) twice each on four separate visits. Sixty minutes following ingestion of either CAF or PL boys performed a static hand-grip test and then a Wingate test. Reliability was moderately high for the Wingate test (R = .70-0.95). Hand-grip reliability was higher for CAF (R = .88) than PL (R = .52). Mean power (180 ± 36 vs 173 ± 28 W) was significantly higher (p < .05) in CAF versus PL, respectively. There were no differences in peak power or static hand-grip maximal voluntary contraction with CAF. Further, peak HR (190 ± 10 vs 185 ± 10 beats · min(-1)) was significantly higher in CAF versus PL, respectively. Thus, in this study a moderately high dose of CAF significantly increased the average power during a Wingate test, yet it does not affect peak power or static hand-grip strength.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adipose Tissue
  • Analysis of Variance
  • Caffeine / pharmacology*
  • Central Nervous System Stimulants / pharmacology*
  • Child
  • Cross-Over Studies
  • Double-Blind Method
  • Ergometry / instrumentation
  • Exercise Test*
  • Hand Strength / physiology*
  • Humans
  • Isometric Contraction / drug effects*
  • Male
  • Reproducibility of Results
  • Statistics as Topic
  • Surveys and Questionnaires

Substances

  • Central Nervous System Stimulants
  • Caffeine