title: Effects of carbohydrate, branched-chain amino acids, and arginine in recovery period on the subsequent performance in wrestlers.
abstract: Many athletes need to participate in multiple events in a single day. The efficient post-exercise glycogen recovery may be critical for the performance in subsequent exercise. This study examined whether post-exercise carbohydrate supplementation could restore the performance in the subsequent simulated wrestling match. The effect of branched-chain amino acids and arginine on glucose disposal and performance was also investigated. Nine well-trained male wrestlers participated in 3 trials in a random order. Each trial contained 3 matches with a 1-hr rest between match 1 and 2, and a 2-hr rest between match 2 and 3. Each match contained 3 exercise periods interspersed with 1-min rests. The subjects alternated 10-s all-out sprints and 20-s rests in each exercise period. At the end of match 2, 3 different supplementations were consumed: 1.2 g/kg glucose (CHO trial), 1 g/kg glucose + 0.1 g/kg Arg + 0.1 g/kg BCAA (CHO+AA trial), or water (placebo trial). The peak and average power in the 3 matches was similar in the 3 trials. After the supplementation, CHO and CHO+AA trial showed significantly higher glucose and insulin, and lower glycerol and non-esterified fatty acid concentrations than the placebo trial. There was no significant difference in these biochemical parameters between the CHO and CHO+AA trials. Supplementation of carbohydrate with or without BCAA and arginine during the post-match period had no effect on the performance in the following simulated match in wrestlers. In addition, BCAA and arginine did not provide additional insulinemic effect.
authors: Department of Exercise Health Science, National Taiwan College of Physical Education, 16, Sec 1, Shuan-Shih Rd, Taichung, 404, Taiwan. wspahn@seed.net.tw.
authors: Tsong-Rong
authors: TR
authors: Jang
authors: Ching-Lin
authors: CL
authors: Wu
authors: Chai-Ming
authors: CM
authors: Chang
authors: Wei
authors: W
authors: Hung
authors: Shih-Hua
authors: SH
authors: Fang
authors: Chen-Kang
authors: CK
authors: Chang