运动员在热环境训练时,由于体内代谢和外界热环境的综合影响,可使机体受热致体温增高。外界气温接近人体皮肤温度时,排汗成为散热的主要途径。但大量排汗可引起身体脱水,血容量减少,并加重心脏血管和肾脏的负担。伴随出汗,体内无机盐和维生素的丢失,还能导致代谢紊乱,运动能力下降,严 Athletes in the thermal environment training, due to the combined effect of the body metabolism and the external thermal environment, body temperature can cause increased body temperature. When the outside temperature is close to the human skin temperature, perspiration becomes the main way to dissipate heat. However, a large number of perspiration can cause dehydration, reduced blood volume, and increased cardiovascular and kidney burden. Accompanied by sweating, the loss of inorganic salts and vitamins in the body, but also lead to metabolic disorders, decreased exercise capacity, strict