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KMID : 1139220180140060985
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Journal of Exercise Rehabilitation
2018 Volume.14 No. 6 p.985 ~ p.992
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The effects of 10 weeks of β-alanine supplementation on peak power, power drop, and lactate response in Korean national team boxers
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Kim Kwang-Jun
Song Hong-Sun
Yoon Dong-Hyun
Fukuda David H.
Kim Soon-Hee
Park Dong-Ho
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Abstract
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This study was designed to investigate the effects of β-alanine (BA) supplementation on peak power, power drop, and lactate response in elite male amateur boxers. Nineteen male Korean national team boxers were divided into groups with either BA (n= 9) or placebo (PL, n= 10) supplementation. BA consumed 4.9?5.4 g/day of BA with training for 10 weeks and PL took PL in a similar manner. Physical fitness and lactate changes in sparring were measured before and after the 10-week intervention. Significant interactions (P< 0.05) were shown for lower body peak power (P= 0.049) and upper body power drop (P= 0.042). Positive effects for the BA group were shown for lower body peak power (Cohen d= 0.72; 95% confidence interval [CI], 0.09?1.35) and the maintenance of upper body power output (d= -0.91; 95% CI, -1.61 to -0.17). These findings suggest that Korean national amateur boxers who consumed BA demonstrated differential responses following a training intervention in specific physical fitness when compared to boxing athletes who consumed a PL.
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KEYWORD
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β-Alanine, Training, Physical fitness, Lactate, Amateur boxer
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