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The supplementation of branched-chain amino acids, arginine and citrulline improves endurance exercise performance in two consecutive days

dc.creatorCheng, I-Shiung;Wang, Yi-Wen;Chen, I-Fan;Hsu, Gi-Sheng;Hsueh, Chun-Fang;Chang, Chen-Kang
dc.date2016-08-05
dc.date.accessioned2019-03-04T17:28:33Z
dc.date.accessioned2025-07-27T15:01:49Z
dc.date.available2019-03-04T17:28:33Z
dc.date.issued2019-03-04T17:28:33Z
dc.description.abstractThe central nervous system plays a crucial role in fatigue during endurance exercise. Branched-chain amino acids (BCAA) could reduce cerebral serotonin synthesis by competing with its precursor tryptophan for crossing the blood brain barrier. Arginine and citrulline could prevent excess hyperammonemia accompanied by BCAA supplementation. This study investigated the combination of BCAA, arginine, and citrulline on endurance performance in two consecutive days. Seven male and three female endurance runners ingested 0.17 g·kg-1 BCAA, 0.05 g·kg-1 arginine and 0.05 g·kg-1 citrulline (AA trial) or placebo (PL trial) in a randomized cross-over design. Each trial contained a 5000 m time trial on the first day, and a 10000 m time trial on the second day. The AA trial had significantly better performance in 5000 m (AA: 1065.7 ± 33.9 s; PL: 1100.5 ± 40.4 s) and 10000 m (AA: 2292.0 ± 211.3 s; PL: 2375.6 ± 244.2 s). The two trials reported similar ratings of perceived exertion. After exercise, the AA trial had significantly lower tryptophan/BCAA ratio, similar NH3, and significantly higher urea concentrations. In conclusion, the supplementation could enhance time-trial performance in two consecutive days in endurance runners, possibly through the inhibition of cerebral serotonin synthesis by BCAA and the prevention of excess hyperammonemia by increased urea genesis.
dc.format.extent117 bytes
dc.format.mimetypetext/html
dc.identifier.urihttps://ir.ntus.edu.tw/handle/987654321/64031
dc.languagezh_TW
dc.publisherPMC
dc.relationJ Sports Sci Med, Vol.15, No.3, pp.509–515.
dc.subjectCentral Fatigue; Time Trial; Neurotransmitter; Hyperammonemia; Tryptophan
dc.titleThe supplementation of branched-chain amino acids, arginine and citrulline improves endurance exercise performance in two consecutive days
dc.typearticle
dspace.entity.typePublication

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