2012-2013学年第二学期2012级大学体育ii大作业（2012-2013 school year, second semester, 2012 class university sports, II big homework）.doc

2012-2013学年第二学期2012级大学体育ii大作业（2012-2013 school year, second semester, 2012 class university sports, II big homework） I. brief on the principles of starting from reality and the principle of gradual progress (60 points) in the basic principles of physical exercise Principle of departure from reality The principle of starting from reality is to select proper sports load according to the purpose, content, method and condition of physical exercise. Each exercise of subjective and objective conditions are not the same, so in the choice of training content, method, exercise load, according to It differs from man to man. should pay special attention to the amount of exercise. A moderate amount of exercise means proper physical load during physical exercise. The effect of exercise is closely related to the appropriateness of physiological load during exercise. The organism adapts to the suitable load, the load is too small, the organism can not obtain the appropriate stimulation, the bodily function change is not obvious, the exercise effect is also bad. On the contrary, excessive load on the body not only can not enhance the physique, but will damage health. The magnitude of exercise load consists of load and load intensity. Load by frequency, exercise group number, time, distance and load weight characteristics; load can exercise movement speed, difficulty, practice exercises density, the length of the intermittent time and single bearing size, throwing distance, jumping height and length show. Quantity and strength should be handled appropriately. The greater the intensity, the amount will be reduced accordingly; moderate intensity, the amount can also be increased accordingly. To do the proper amount, the trainee can bear it and have certain fatigue. From a practical point of view, in addition to individual variation, but also because, according to local conditions, to achieve the best effect of exercise. Due to the time and is based on the actual situation of the exter