论文部分内容阅读
近年来,各地都开展了群众性的游泳活动。游泳不但能增强体质,而且锻炼了人们的意志和毅力。为了更好开展游泳活动,下面谈谈游泳的卫生知识。游泳对身体有什么好处? 游泳是较全面的运动,可增强身体各器官的功能。特别是胸廓和血管受到水的压力、阻力的影响,就必须靠呼吸肌和心脏的强有力的收缩来维持正常的呼吸和循环。长期锻炼,就能增加肺活量和心脏功能。皮肤经常受冷水刺激,能够提高人体对气温突然变化的适应能力,预防感冒。经常游泳,体表
In recent years, mass swimming activities have been carried out all over the country. Swimming can not only enhance physical fitness, but also exercise people’s will and perseverance. In order to better carry out swimming activities, the following talk about swimming health knowledge. What are the benefits of swimming on the body? Swimming is a more comprehensive exercise that enhances the function of various organs of the body. In particular, thorax and blood vessels by water pressure, resistance, you must rely on the strong contraction of the respiratory muscles and the heart to maintain normal breathing and circulation. Long-term exercise, can increase lung capacity and heart function. Skin is often stimulated by cold water, can improve the body’s ability to adapt to sudden changes in temperature, prevent colds. Often swimming, body surface