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为探讨支链氨基酸ＢＣＡＡ对提高大鼠运动能力的作用本实验取雄性ｗｉｓｔａｒ大鼠２１只随机分为正常组、游泳对照组和游泳补充５％支链氨基酸饲料组。两个游泳组每天游泳训练１小时。１０天后游泳６小时，测定血和骨骼肌乳酸水平测定骨骼肌糖原含量、骨骼肌线粒体脂质过氧化物ＬＰＯ水平和线粒体膜的流动性以及线粒体矿物元素钙Ｃａ、镁Ｍｇ、钾Ｋ含量。结果显示ＢＣＡＡ可抑制游泳运动后大鼠的血和骨骼肌乳酸的升高幅度，减少骨骼肌糖原的降低幅度与骨骼肌线粒体ＬＰＯ的升高幅度，抑制骨骼肌线粒体膜流动性和矿物质元素Ｃａ、Ｍｇ、Ｋ含量的下降。以上结果表明ＢＣＡＡ可改善运动后骨骼肌线粒体功能对抗运动性疲劳可能有利于提高大鼠的运动能力。
In order to investigate the effect of branched-chain amino acid BCAA on improving motor performance in rats, 21 male Wistar rats were randomly divided into normal group, swimming control group and 5% branched-chain amino acid supplementation group. Two swimming groups swam for 1 hour a day. Six hours after swimming for 10 days, the levels of lactate in blood and skeletal muscle were measured. The content of glycogen in skeletal muscle, the LPO level in mitochondria and the fluidity of mitochondrial membrane in mitochondria and the contents of calcium, magnesium, potassium and potassium in mitochondrial mineral elements were determined. The results showed that BCAA could inhibit the increase of blood and skeletal muscle lactate in rats after swimming, reduce the decrease of skeletal muscle glycogen and the increase of LPO in skeletal muscle, inhibit the mobility of skeletal muscle mitochondrial membrane and the content of mineral elements Ca, Mg, K decreased. The above results show that BCAA can improve skeletal muscle mitochondrial function after exercise to combat exercise-induced fatigue may be beneficial to improve the motor ability of rats.