在正常情况下,适当运动可促进血液循环和新陈代谢,增强肌肉和心脏的收缩力,增加肺活量,强壮骨骼,提高免疫力,预防衰老,对身心健康均有不可估量的益处。但有的人身体条件特殊,特别是患有糖尿病、高血压、骨质疏松症、骨性关节炎等慢性病的老人,很多运动方式都不适宜,贸然锻炼对身体有害。如膝关节炎患者不宜打太极拳,这是因为太极拳的很多动作都需要保持半蹲姿势,再加上一些扭转动作,使膝关节负重过大,摩擦和挤压增多,这对原本就老化的膝关节 Under normal circumstances, proper exercise can promote blood circulation and metabolism, enhance muscle and heart contractility, increase lung capacity, strong bones, improve immunity, prevent aging, have immeasurable benefits to both physical and mental health. However, some people have special physical conditions. In particular, elderly people suffering from chronic diseases such as diabetes, hypertension, osteoporosis and osteoarthritis are not suitable for exercise. Routine exercise is harmful to the body. Such as knee osteoarthritis patients should not be playing tai chi, tai chi this is because many actions need to maintain the squat posture, plus some twisting action, so that the knee load is too large, friction and squeeze increased, which is already aging Knee