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人到中老年时期,机体各个器官与系统的机能能力逐渐减弱,心肺功能降低,心每搏量减少,心率减慢,血压升高,心脏对大强度工作适应能力下降。为增强心肺功能,提高工作效率,预防疾病,延缓衰老过程,进行各种适合自己身体情况的体育锻炼是非常重要的。国内对中老年体育锻炼者的心肺机能研究已有报道,但中老年从事长跑与冬泳锻炼对左心室功能的影响,国内尚未见报道。为此,我们对北京中老年长征长跑队的队员与冬泳锻炼者进行了左心室收缩间期的初步探讨。
People in the middle and old age, the body’s various organs and systems gradually weakened capacity, decreased cardiorespiratory function, reduced cardiac stroke volume, heart rate slowed down, blood pressure, the heart of the work ability to adapt to the decline of high intensity. In order to enhance cardiopulmonary function, improve work efficiency, prevent diseases, delay aging process and perform various physical exercises suitable for one’s own condition, it is very important. The research on cardiopulmonary function of middle-aged and old-aged physical exercisers has been reported in China. However, the effect of long-distance running and winter swimming exercise on left ventricular function in middle-aged and elderly people has not been reported in China. To this end, we conducted a preliminary discussion on the duration of left ventricular systole between Beijing Long-March Middle Long March runners and winter swimmers.