A preliminary study of physical fitness.docVIP

A preliminary study of physical fitness [Abstract] movement can enhance physical fitness, and strengthen cardiovascular, bone, muscle and endocrine system and so on, through the exercise consumes extra energy, reduce fat accumulation and obesity, and to promote the human body function, to avoid the incidence of chronic diseases, the maintenance of human health, there is a significant help. [Keywords:] physical fitness assessment of physical fitness exercise diet World Health Organization definition of health: health thus an physical, mental state of complete, as well as good ability to adapt, not just the absence of disease and debilitating condition. This is what people referred to physical and mental health, that is, a person in physical health, mental health, social adaptation and moral health of a good four aspects of sound, is completely healthy people. A physical fitness definition and classification 1.1 Definition The body to adapt to the work and the comprehensive capacity of the environment. The heart, blood vessels, lung and muscle efficiency of the ability to complete daily activities Buzhi Yu fatigue, and there is enough physical exercise or engage in casual sex the ability to cope with emergency situations. 1.2 Classification (1) health related physical fitness. (2) Sports (Sport) related physical fitness. 1.2.1 Classification and definition of physical fitness (1) strength A force that muscle can exert the greatest force. Muscle strength is the power generated, that is, muscle tension to overcome the resistance produced a feature, in general, it refers to the maximum strength, that is, generated by a particular muscle group is the greatest force. Maximum muscle strength including dynamic maximum strength and static maximum strength of two. Maximum dynamic strength of the so-called isotonic muscle contraction force generated by static maximum isometric muscle strength compared with muscle contractions generate power. The body movements