| Literature DB >> 19602839 |
Yoshiharu Shimomura1, Hisamine Kobayashi, Kazunori Mawatari, Keiichi Akita, Asami Inaguma, Satoko Watanabe, Gustavo Bajotto, Juichi Sato.
Abstract
The present study was conducted to examine alterations in plasma free amino acid concentrations induced by squat exercise and branched-chain amino acid (BCAA) supplementation in young, untrained female subjects. In the morning on the exercise session day, participants ingested drinks containing either BCAA (isoleucine:leucine:valine=1:2.3:1.2) or dextrin (placebo) at 0.1 g/kg body weight 15 min before a squat exercise session, which consisted of 7 sets of 20 squats, with 3 min intervals between sets. In the placebo trial, plasma BCAA concentrations were decreased subsequent to exercise, whereas they were significantly increased in the BCAA trial until 2 h after exercise. Marked changes in other free amino acids in response to squat exercise and BCAA supplementation were observed. In particular, plasma concentrations of methionine and aromatic amino acids were temporarily decreased in the BCAA trial, being significantly lower than those in the placebo trial. These results suggest that BCAA intake before exercise affects methionine and aromatic amino acid metabolism.Entities:
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Year: 2009 PMID： 19602839 DOI： 10.3177/jnsv.55.288
Source DB: PubMed Journal: J Nutr Sci Vitaminol (Tokyo) ISSN： 0301-4800 Impact factor: 2.000