Due to the continuous renewal of the concept of sports training, modern training methods and means continue to emerge, promoting the scientific level of sports training, making the competition of different sports become more intense. Among them, swimming is particularly important for endurance training. Improper training methods can easily lead to muscle injury of athletes. Branched chain amino acids are important substances in the synthesis of human muscle protein, which can effectively improve the synthesis rate of human protein and the efficiency of muscle growth. Therefore, this paper attempts to explore the protective effect of branched chain amino acids on muscle injury of swimmers after endurance exercise. In this paper, 30 swimmers in our province were selected as the experimental objects, and branched chain amino acids (BCAA) were taken as the breakthrough point to explore the protective effect of BCAA on muscle injury of swimmers after endurance exercise. The experimental results show that in a training cycle, Hb will continue to decline under the increasing load, while it will significantly decrease in the heavy load training, but there is no sports anemia, and there is a recovery increase during the adjustment training. Bcca may protect cells by increasing intracellular ATP concentration. Branched chain amino acids can effectively eliminate the excess oxygen free radicals in the body after exercise, so as to reduce the damage and damage of free radicals on the normal cell membrane of the body, and prevent or reduce the lipid peroxidation reaction. BACC has obvious protective effect on muscle injury caused by exercise, and reduces muscle tissue injury.

Tetsuzo Tanino. Branched Chain Amino Acids on Swimming Athletes' Muscle Injury after Endurance Exercise. International Journal of Sports Technology (2020), Vol. 1, Issue 2: 50-60. https://doi.org/10.38007/IJST.2020.010205.

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