Preparatory activities are a series of physical exercises performed by the human body before performing physical exercises, training or competitions. That is, before the exercise is performed, the human body can be prepared to gradually transition from a quiet state to a sports state. Its good effect can, to a large extent, increase the body temperature and accelerate the metabolic process within the cell so that the human body can quickly transition to the optimal physiological state required for exercise and improve the body's working ability.
American Physiological worker Bernard did an experiment by 44 aged 21--52 years old ordinary people as subjects in good health without any symptoms of cardiovascular disease, the lack of preparation beforehand activities, they participate in strenuous In exercise, 70% of them have abnormal changes in ECG. If a 2- minute jog is performed as a preparatory activity before strenuous exercise , this change in ECG will disappear or decrease. It can be seen that reasonable preparation activities can increase the excitability of the central nervous system, strengthen the coordination and function levels among various organ systems, overcome physiological inertia, and allow the human body to prepare for transition from a quiet state to a tense muscle activity state. Prepare for sports or competitions. When you move into formal practice, each organ system will be able to maximize its work efficiency and greatly reduce the incidence of injury accidents.
The content, time, and timing of preparation activities should be determined according to the characteristics of individuals and sports. In general, more stretching exercises begin, followed by general running and unarmed exercises, followed by activities related to special techniques and major muscle groups and joints used in competitions. The strength is from small to large, to slight sweating, and the muscle temperature reaches about 39 °C. In general exercise preparation time, 5 - 10 minutes is enough. However, athletes can be as long as 30 minutes depending on personal characteristics . The interval between the preparations for the event and the game is appropriate within minutes.
Â
Â
Wuyi Xukai industry and Trade Co,Ltd,established in 2016, is an industry and trade enterprise integrating stainless steel products, daily plastic products, household appliances and other manufacturing, processing,sales, goods import and export,technology import and export
Ordinary Straight Cup,Stainless Steel Thermos Mug,Portable Water Cup,Stainless Steel Water
Wuyi Xukai industry and Trade Co.,Ltd , https://www.wyxukai.com