Experts said: When people exercise excessively, in order to prevent further energy consumption, people will feel extremely tired and weak, and their brains will react slowly. If they exercise excessively for a long time, their brain function will be damaged, especially in children. Excessive exercise is easy to lose concentration, insomnia, forgetfulness and even lack of oxygen.
Disadvantage 1: tug of war
Tug of war may make children "sad" and "injured". Physiologically speaking, children's heart is developing, and the regulating function of autonomic nerve to heart is not perfect. When the limb load increases, the blood supply is mainly increased by increasing the heart rate. Tug of war requires holding your breath hard, sometimes for more than ten seconds at a time. When you suddenly change from holding your breath to exhaling, venous blood flow will suddenly rush to the atrium, damaging the soft atrial wall of the child. Some medical workers made a physical examination of 250 tug-of-war children aged 5-6, and found that their heart rates were all very high. After 1 hour, 30% of children's heart rate failed to return to normal.
In addition to the impact on the heart, tug-of-war may also hurt children's "bones and muscles." In childhood, the muscles of the body mainly grow vertically, the strength of fixing joints is weak, and the elasticity of bones is hard. During tug-of-war, it is easy to cause joint dislocation and soft tissue injury, inhibit bone growth, and even cause limb deformation in severe cases, which affects children's bodybuilding. In addition, tug-of-war is a highly antagonistic sport. Children are competitive and have a strong sense of collective honor. It is often difficult to control and protect yourself in the game, and it is easy to get hurt.
Second: strength training
In the process of growth and development, children always grow taller first, then gain weight, and their muscle strength is weak, which makes them extremely tired. In other words, the body development is dominated by bone growth and has not yet entered the peak of muscle growth. If the child is allowed to carry out muscle weight-bearing strength exercise prematurely at this time, first, the local muscles of the child are too strong, which affects the symmetrical development of various parts of the body; Second, muscles will be stimulated and develop prematurely, which will cause a heavy burden on organs such as the heart; In addition, it may make local muscles stiff and lose normal elasticity. Therefore, parents should not let their children engage in strength exercises such as pull-ups, push-ups and sit-ups that adults often practice. If you want to practice muscle strength, it is more appropriate to start from the second day of the first grade.
Third place: long-distance running and weight-bearing running.
Long-distance running is a typical impact exercise, which has a high impact on all joints of the human body. Children often run and exercise, which is not good for epiphysis development at joints. Especially long-distance running on hard roads in winter has a greater impact on joints, and epiphyses are prone to inflammation, thus affecting children's growth. Long-distance running is also a heart load exercise. Children who run long-distance running too early will increase the thickness of myocardial wall, limit the expansion of cardiac cavity and affect the development of cardiopulmonary function. In addition, in childhood, the proportion of water in the body is relatively large, the content of protein and inorganic substances is small, and muscle strength is weak. If you take part in high-energy long-distance running, your nutrition will make ends meet and hinder your normal growth and development.
In addition, when a sandbag is tied to carry out weight-bearing running, the running posture of the child is easy to deform, and the wrong action can easily lead to sports injury.
Not suitable for four: pulling the wrist.
The joint capsule of each joint of children's limbs is slack and weak, which is easy to sprain their wrists. In addition, like tug-of-war, holding your breath is an inevitable phenomenon when pulling your wrist, which will make the pressure in your chest rise sharply and prevent venous blood from returning to your heart. Then a large amount of blood trapped in the vein will rush into the atrium violently, causing excessive stimulation to the heart wall. If you practice wrist strength with one arm for a long time, it may cause uneven development of both limbs.
Not suitable for five: extreme sports
Experts believe that children's physical exercise should follow the law of children's own physical growth and development; Second, we should consider the anatomical and physiological characteristics of children and adolescents. The child is in the period of growth and development, and the organs are immature in all aspects. Naturally, it is difficult to bear challenging extreme sports, and it is also easy to cause injuries. For example, a large amount of exercise that exceeds the child's physical endurance several times may cause the child's muscles to be extremely tired for a long time, causing muscle fatigue damage and easily leaving sports injury sequelae. In addition, children who are in the process of growth and development, the cartilage in the joint has not yet fully grown, and the cartilage of the knee joint has been excessively worn for a long time, which is easy to form arthritis in the future. Studies have shown that knee injuries in childhood will increase the possibility of arthritis in adulthood by three or four times.
Sixth place: Rabbit jumps.
When doing rabbit jumping, the weight borne by the center of gravity of the human body is equivalent to 3 times of its own weight, and the impact force borne by the kneecap is equivalent to 1/3 of its own weight. For children whose ossification process has not been completed, it is easy to cause ligament and knee meniscus damage.
Not suitable for seven: handstand
Although children's intraocular pressure adjustment function is strong, it will damage the intraocular pressure adjustment function of eyes if they stand upside down frequently or for too long.
Not suitable for eight: bumper cars
/kloc-children under 0/0 should not play bumper cars. Children's muscles, ligaments, bones and connective tissues are immature and very fragile, which is easy to cause sprains and abrasions when subjected to strong vibration.
No 9: Scooter
Children under 8 years old should not play with scooters. Children's bodies are in a critical period of development. Playing scooter for a long time will lead to over-developed leg muscles, which will affect the overall development of the body and even the height development. In addition, when playing a scooter, the waist, knees and ankles need strong support. These parts are very easy to get hurt, so take precautions. It is best to have parents to accompany you and find a flat and spacious non-traffic area to play.
Incompatibility: blindly exercise with community fitness equipment.
Public fitness equipment requires high safety. For example, the most popular "spacewalker" is obviously only suitable for adults according to the specifications between its feet, while the relevant warnings only stipulate the form of exercise and health taboos, and there is no special restriction on the age of users. And many teenagers also regard these devices as toys. At present, children's injuries caused by improper use of fitness equipment are increasing, and even serious injuries and disabilities have occurred. It is understood that the fitness equipment in the community is equipped for middle-aged and elderly people in principle, and fitness equipment suitable for children has not been installed yet.
Experts point out that engaging in a special sport too early is also harmful to underage children, including: fatigue fracture, menstrual disorder, excessive fatigue, eating disorder, emotional depression and so on. Therefore, experts believe that parents should encourage their children to participate in various sports activities, instead of hoping that their children will create miracles in certain sports when they are young.
Some parenting experts believe that according to children's physical development characteristics, parents can let their children do skipping, bouncing, bungee jumping, taking small balls, playing small football, playing small basketball, swimming and other sports. This not only helps to increase children's height, but also harms their health. In addition, for immature children, it is best not to exercise for more than one hour at a time, with an interval of more than ten minutes, and then exercise after rest. Don't do too much exercise in a day, as long as the children don't feel tired after exercise.