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在工作或运动到一定的时间就必然会感到疲劳,这是正常的生理现象,不足为虑。只要经过适当的休息,疲劳就可消除,体能就会得到恢复。关于疲劳的本质在1982年美国波士顿举行的第五届国际生化会议上特为其下了一个比较全面的定义:“运动性疲劳是人在运动时,身体的生理过程不能维持其机能在一特定水平,或各器官不能维持预定的运动强度。”也就是说,运动性疲劳是机体内细胞中的能量物质消耗和神经肌肉兴奋性、活动性下降的综合表现,是一个整体性的生物学过程。在体育锻炼和运动训练中,一定的疲劳程度有利于机体获得超量恢复,从而达到增强体质提高运动能力之功效。而过度疲劳则是一种病理状态。所谓过度疲劳,是指在体育运动中连续疲劳积累所产生的一种病理状态。即由于“筋疲力尽而造成的肌肉或其它器官不能维持运动的表现。”这种病理状态会使人体产生许多不良的反应。如精神不振,感觉迟钝、睡眠不好、食欲减少、头昏、肌肉酸痛等,随之运动能力下降,完成动作不协调,不准确,运动时力不从心。在这种情
In the work or exercise to a certain time will inevitably feel tired, this is a normal physiological phenomenon, not enough. As long as the proper rest, fatigue can be eliminated, physical fitness will be restored. On the nature of fatigue in the 1982 United States held in Boston, the Fifth International Biochemistry Conference specifically for its under a more comprehensive definition: “exercise fatigue is human exercise, the body’s physiological processes can not maintain its function in a A certain level, or organs can not maintain a predetermined exercise intensity. ”In other words, exercise fatigue is the body’s energy consumption in cells and neuromuscular excitability, the decline in activity of the overall performance is a holistic biological Learn process. In physical exercise and exercise training, a certain degree of fatigue is conducive to the body to obtain excess recovery, so as to enhance the physical fitness to improve the effectiveness of the effect. Excessive fatigue is a pathological condition. The so-called over-fatigue, refers to the continuous accumulation of fatigue in sports generated by a pathological state. That is, muscle or other organs caused by exhaustion can not maintain their performance. “” This pathological condition can cause a lot of adverse reactions in the body. Such as lack of energy, feeling sluggish, poor sleep, loss of appetite, dizziness, muscle aches, etc., followed by decreased exercise capacity to complete the action is not coordinated, inaccurate, exercise powerless. In this situation