The Ameliorating Effect of Branched-chain Amino Acids Ingestion on Different Types of Muscle Soreness after Swimming and Full-marathon Running

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概要

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• The effectiveness of branched-chain amino acids (BCAA) ingestion on delayed onset muscle soreness (DOMS) has been established in experimental exercise involving eccentric contraction (ECC). This placebo-controlled, randomized, double-blind study evaluated the effect of BCAA ingestion on two types of muscle soreness after swimming (which generally involves little ECC) and immediate onset muscle soreness (IOMS) after a full-marathon and on systemic fatigue. Subjects were 32 swimmers competing in a university swim meet and 22 non-professional runners participating in a full-marathon race. They received either 3.2g of BCAA or placebo three times a day, from the day before to two days after their events. Systemic fatigue and soreness in muscle regions (seven regions in swimmers, six in runners) were evaluated using a numeric rating scale before, immediately after, and one and two days after the events. In the swimmers, muscle soreness in the upper body (neck, upper arm, back, and low back), buttock, and thigh and systemic fatigue were significantly decreased after two days in the BCAA group. In the runners, IOMS occurred in all examined regions immediately after the marathon, and BCAA ingestion significantly decreased both muscle soreness in the anterior thigh, anterior lower leg, and buttock and systemic fatigue within two days. This study showed the effectiveness of BCAA ingestion on improving systemic fatigue, muscle soreness after swimming, and IOMS after a full-marathon. On the basis of these results, it is proposed that BCAA supplements can be administered to ameliorate muscle soreness and fatigue induced by various types of exercise.

• 日本運動生理学会の論文

著者

• MIYAZAKI Teruo

  Joint Research Center, Tokyo Medical University Ibaraki Medical Center

• RA Song-Gyu

  Graduate School of Comprehensive Human Sciences, University of Tsukuba

• ISHIKURA Keisuke

  Sports Research and Development Core, University of Tsukuba

• Ohmori Hajime

  Faculty of Health and Sport Sciences, University of Tsukuba

• RA Song-Gyu

  Graduate School of Comprehensive Human Sciences, University of Tsukuba:The Japan Society for the Promotion of Science

関連論文

• O-13 Mitigating effect of branched-chain amino acid supplementations on the muscle soreness after swimming competition and marathon race(The Proceedings of the 20th Annual Meetings of Japan Society of Exercise and Sports Physiology July 28・29,(Tsukuba))
• Exercise-induced changes in amino acid levels in skeletal muscle and plasma
• The Ameliorating Effect of Branched-chain Amino Acids Ingestion on Different Types of Muscle Soreness after Swimming and Full-marathon Running

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