对不同的运动生理负荷．身体会出现不同程度的疲劳现象。体育锻炼是在不断和疲劳斗争的过程中，提高和发展人体机能水平的（见附表）。运动强度、时间、频度及数量4个因不决定运动负荷，各因素间密切相关、互相制约，任何一种因素又都直接影响运动负荷。在体育锻炼时发现运动负 Physiological load on different exercises. The body will experience varying degrees of fatigue. Physical exercise is to improve and develop the level of human performance in the constant struggle against fatigue (see attached table). Exercise intensity, time, frequency and number of 4 because of the decision not to exercise load, the various factors are closely related to each other constraints, any one of the factors that directly affect the exercise load. Found negative during physical activity