- Poster presentation
- Open Access
The effects of 8 weeks of heavy resistance training and branched-chain amino acid supplementation on body composition and muscle performance
Journal of the International Society of Sports Nutrition volume 10, Article number: P25 (2013)
This study determined the effects of eight weeks of heavy resistance training combined with branched-chain amino acid (BCAA) supplementation on body composition and muscle performance.
Nineteen non-resistance-trained males resistance-trained (3 sets of 8-10 repetitions) four times/week for eight weeks while also ingesting 9 g/day of BCAA or 9 g/day of placebo (PLAC) on exercise days only (half of total dose 30 min before and after exercise). Data were analyzed with separate 2 x 2 ANOVA (p < 0.05).
For total body mass, neither group significantly increased with training (p = 0.593), and there also were no significant changes in total body water (p = 0.517). Also, no training- or supplement-induced (p = 0.783) changes occurred with fat mass or fat-free mass (p = 0.907). Upper-body (p = 0.047) and lower-body strength (p = 0.044) and upper- (p = 0.001) and lower-body muscle endurance (p = 0.013) were increased with training; however, these increases were not different between groups (p > 0.05).
When combined with heavy resistance training for eight weeks, 9 g/day of BCAA supplementation, half given 30 min before and after exercise, had no preferential effects on body composition and muscle performance.
About this article
Cite this article
Spillane, M., Emerson, C. & Willoughby, D.S. The effects of 8 weeks of heavy resistance training and branched-chain amino acid supplementation on body composition and muscle performance. J Int Soc Sports Nutr 10, P25 (2013) doi:10.1186/1550-2783-10-S1-P25
- Public Health
- Body Water
- Body Composition
- Sport Medicine