10名受试者(男性,年令18～25岁)汗分泌、肾功能和体温调节机能都正常,检查在高温条件下进行体力活动对机体蛋白酶原和醛固酮系统的影响。实验分成二组:第一组受试者在功量计上作运动,劳动强度约等于50％的最大耗氧量,实验过程2个小时,气温为32℃,相对湿度45～50％,自由进水。第二组的实验在同样条件下进行,但以电解质溶液(1升水中含有20M的电解质钠离子和20M电解质钾离 Ten subjects (men, 18 to 25 years of age) had normal perspiration, renal function, and thermoregulatory functions, and examined the effects of physical activity at elevated temperatures on the body’s proenzyme and aldosterone systems. The experiment was divided into two groups: the first group of subjects to exercise on the meter, labor intensity is about equal to 50% of the maximum oxygen consumption, the experimental process 2 hours, the temperature is 32 ℃, relative humidity 45 ~ 50%, free Water. The second set of experiments were performed under the same conditions but with electrolyte solution (20 M electrolyte sodium ion and 20 M electrolyte potassium in 1 L of water