】众多证据表明，γ－氨基丁酸（ＧＡＢＡ）、甘氨酸（Ｇｌｙ）是脊椎动物中枢神经系统（ＣＮＳ）中主要的抑制性氨基酸类神经递质，参与神经系统的多种生理功能，对运动、感觉、内分泌、镇痛及生物节律等起着重要调节作用。但择时运动对其含量及近似昼夜节律性的影响却有待进一步研究 Numerous evidences indicate that GABA and Gly are the major inhibitory amino acid neurotransmitters in the vertebrate central nervous system (CNS) and are involved in various physiological functions of the nervous system. Feeling, endocrine, analgesia and biological rhythms play an important regulatory role. However, the effect of timing exercise on its content and approximate circadian rhythms needs further study