Tug of war

Physiologically speaking, the heart of a young child is developing. The heart muscle is soft, the heart wall is thin, and the volume is small. The autonomic nerve regulation function is not perfect. When the limb load increases, it mainly depends on increasing the heart rate to increase the blood supply. . Therefore, the heart is prone to fatigue and cannot afford the great forces like the tug of war against the activities. Some medical workers had conducted physical examinations on 250 children aged 5 to 6 who participated in the tug-of-war competition and found that the heart rate was high, and 30% of children's heart rate did not return to normal one hour after the match. This is extremely detrimental to the heart function of children. In addition, tug-of-war is a highly antagonistic exercise that often causes the skin of children’s palms to be worn out by ropes, and even if the two sides pull too long and exert excessive force, under strong external force, dislocation or soft tissue injuries are easily caused. Seriously, it can also cause physical deformation and affect children's bodybuilding.

Second, it is not appropriate to train muscles too early

In the growth and development process of human beings, height grows before body weight, and children are the first to grow taller, and then grow longer, and the muscles have more moisture content. They contain little protein and inorganic salts, have weak strength, and are prone to fatigue. Therefore, it is not advisable to exercise your muscles with heavy weights in early childhood. Modern physiology studies have shown that allowing children to exercise muscle weight exercises too early may make the wall muscles grow thicker and affect the increase of the heart capacity, which is detrimental to the normal development of the child's heart.

Third, long-distance running

The height of a person depends mainly on the growth of whole body bone cells. Participating in the long-distance running exercise that consumes a large amount of energy will make children's nutrition go beyond their means, and the growth rate of bone cells will slow down and hinder normal growth and development.

IV. Inverted

Although the infant's intraocular pressure adjustment function is strong, if they are often inverted or each inversion is too long, the ability of the eye to adjust the intraocular pressure can be impaired.

Five, wrench wrist

The joint capsules of the joints of children's limbs are relatively loose and have poor sturdiness, and wrenches are prone to sprains. In addition, as with tug of war, breath hold is an inevitable phenomenon when wrenching the wrist. This will cause a sharp rise in intrathoracic pressure and blockage of venous return to the heart. Later, a large amount of blood trapped in the veins will violently flush into the atrium, creating a heart wall. Excessive stimulation.

Sixth, children under the age of 10 should not play bumper cars

The muscles, ligaments, bones, and connective tissues of children and adolescents are not mature and very fragile. When they are strongly shaken, they are prone to sprains and bruises.

Children under 8 should not use scooter

Children's bodies are in a critical period of development. If scooters are used for a long period of time, leg muscles will be distributed and affected, affecting the overall development of the body and even affecting height development. In addition, the waist, knees and ankles need to support the body when playing scooters. These parts are very easy to be injured, so be sure to do a good job of protection. It is best to have parents escort and find flat and spacious non-traffic areas to play.

Eight, extreme sports

Experts believe that the physical activity of children and adolescents must first follow the laws of children's own growth and development; Second, consider the anatomy and physiology of children and adolescents. When a child is in a period of growth and development and the organs are not yet mature, it is naturally difficult to endure extremely challenging and extreme sports, and it is very easy to cause injuries. For example, a large amount of exercise that exceeds the capacity of the child’s own body can cause Children's muscles are extremely fatigued for a long period of time, causing muscle fatigue damage, leaving behind sequelae of sports injuries. In addition, in the children who are growing up, the cartilage in the joints has not yet fully grown, and the knee cartilage is excessively worn for a long time, and arthritis is easily formed in the future. Studies have shown that childhood knee injury is three to four times more likely to develop arthritis in adulthood.

Nine, strength exercises

When children grow and develop, they all grow taller and have longer body weight. They also have weak muscles and fatigue. In other words, the body develops mainly bone growth and has not entered the peak of muscle growth. If the child is allowed to exercise muscle weight-bearing exercises too early this time, the child will be overly muscular, affecting the body's development in all parts of the body. Second, the muscles will be developed prematurely and cause heavier heart and other organs. Burden; In addition, it may cause local muscles to become stiff and lose normal elasticity. Therefore, parents should not allow their children to engage in exercises such as pull-ups, push-ups, and sit-ups. If you want to practice muscle strength, it is more appropriate to start from the first and second grade of junior high school.

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