所谓柔韧素质，是指运动时人体各关节活动的幅度。柔韧素质发展的难易程度与年龄密切相关。少儿时期，关节软骨比较厚，关节囊、韧带的伸展性较大，所以关节活动范围大于成人，但牢固性差，由于少儿肌肉水分较多，蛋白质和无机盐较少，富有弹性，肌力弱、耐力差、易疲劳，故少 The so-called flexible quality, refers to the movement of the human body when the range of joint activity. The development of flexible quality and the degree of difficulty is closely related to age. Children, relatively thick articular cartilage, joint capsule, ligaments greater extensibility, so the range of joint activity than adults, but the poor firm, due to more children’s muscular moisture, less protein and inorganic salts, flexible, weak muscle, Poor endurance, fatigue, so less