Physical exercise can obviously improve the blood supply of bones and muscles, so that they can get more nutrition, thus making muscle fibers thicker, larger and more elastic, and correspondingly improving the ability and endurance of muscle activity.

2, the role of the respiratory system

Developing respiratory muscles and increasing vital capacity can promote chest development, strengthen respiratory function and reduce the occurrence of respiratory diseases.

3. Effects on cardiovascular system

The heart development of preschool children is still not perfect, and it is more necessary to promote the all-round development of heart shape and function through physical exercise.

4, the role of the nervous system

Physical exercise is helpful to enhance the adjustment function of preschool children's nervous system to other body systems or organs, promote the flexibility of nerve cell response, and enhance the balance and flexibility of children's movements and their adaptability to the surrounding environment.

5. Endocrine and immune system.

Physical exercise can increase the secretion of growth hormone in children and contribute to physical development.

6, the role of the digestive system

In the process of recovery after exercise, energy needs to be replenished, and the body needs to absorb more nutrients, so it can enhance the absorption function. In addition, being happy after exercise is also beneficial to digestion and absorption.

7. Effect on energy metabolism

The human body has the law of "excessive recovery", that is, the energy consumed during exercise should be recovered after exercise, and the recovery level can often exceed the original level; The more consumption, the greater the surplus,

Extended data:

First, the knowledge and skills of sports activities.

Including: walking, running, jumping, throwing, balancing, drilling, climbing and other basic movements and related knowledge; Sports-related knowledge and skills and so on.

Second, exercise.

Including: balance, coordination, sensitivity, flexibility, strength, speed and other physical function exercises related knowledge and skills and so on.

Third, basic gymnastics and formation exercises.

Including: imitation exercises, unarmed gymnastics, light instrument gymnastics; Passwords, signals and actions; Queue up; Change formation and so on.

Age target of kindergarten sports activities