Effects of different doses of caffeine on anaerobic exercise in boys. uri icon

abstract

  • This study investigated effects of low (1 mgkg-1), moderate (3 mgkg-1) and high (5 mgkg-1) doses of caffeine on anaerobic performance in boys. Twenty-six 8- to 10-year-old boys participated in a double-blind, crossover, counter-balanced study. Boys received in random order a placebo (PL) or anhydrous caffeine: 1 (CAF-1), 3 (CAF-3), or 5 (CAF-5) mg caffeinekg-1 body mass in cherry flavored Sprite. Sixty minutes following consumption boys performed a static handgrip test and then a 30-s Wingate test. Maximal grip strength (21.5 4.9 & 21.6 4.7 vs. 20.4 4.0 kg) was significantly higher in CAF-5 & CAF-3 vs PL, respectively. Absolute and relative peak power (287 72 vs 281 69 W & 8.0 0.9 vs 7.8 1.0 Wkg-1) were significantly higher in CAF-3 vs PL, respectively. Mean power (153 48 vs 146 43 W) was significantly higher in CAF-5 vs PL, respectively. Peak Wingate HR was significantly higher (189 8 vs 185 9 beatsmin-1) in CAF-5 vs PL, respectively. These findings suggest that in boys CAF-1 did not affect performance. During the Wingate test CAF-3 resulted in higher peak power while CAF-5 increased mean power. The significant increase in peak HR following the Wingate test is likely related to greater mean power generated during CAF-5.

published proceedings

  • Pediatr Exerc Sci

altmetric score

  • 0.75

author list (cited authors)

  • Turley, K., Eusse, P. A., Thomas, M. M., Townsend, J. R., & Morton, A. B.

citation count

  • 19

complete list of authors

  • Turley, Ken||Eusse, Paola A||Thomas, Myles M||Townsend, Jeremy R||Morton, Aaron B

publication date

  • February 2015