Exercise load refers to the physiological load that the human body bears during exercise. It includes two aspects: load quantity and load intensity. Quantity refers to the number of times, times, groups, time, distance and weight of completing exercises; Intensity refers to the strength and body tension used to complete the exercise, including the speed of the action, the density of the exercise, the length of the interval, the weight of the load, the throwing distance, the height of the high jump and so on. Quantity and intensity are the main factors that determine the effect of exercise load.
The principle of reasonable arrangement of exercise load refers to the reasonable arrangement of exercise load according to the exerciser's own situation during physical exercise. It can not only make the body tired, but also bear it, and it can also reasonably alternate with rest.
Physical exercise has many benefits to mental health. Physical exercise is considered by many people as one of the very good psychotherapy methods. Physical education can promote physical development and provide a solid material foundation for mental health development. Physical exercise can produce rich emotional experience and improve emotional state. Physical exercise can cultivate imagination and thinking ability. Physical exercise can cultivate good emotional and will qualities.
The Netherlands designs, controls and improves the mental health of junior high school students, providing guidance for cultivating a rational and peaceful healthy mentality. Different exercise loads in physical education class have different effects on the dimensions of junior middle school students' mental health. Moderate load has a positive effect on interpersonal sensitivity, study pressure, maladjustment and emotional balance in mental health. There is no obvious effect on the dimension of psychological balance. Low load has a positive effect on the adaptive dimension of mental health, but has no obvious effect on other dimensions.