High-intensity exercise in a short time accelerates blood circulation. When the blood circulation exceeds the tolerance range of human skeletal muscle, muscle ischemia will occur, leading to muscle dissolution. High intensity ischemia in a short period of time will make it difficult for cells to recover.
Scientifically speaking, excessive exercise leads to increased capillary permeability. After the damage of muscle cell membrane is abnormal, the concentration of calcium ion in muscle cells will change, which will lead to cell dysfunction, activation of chemicals such as phosphorylase and protease, and aggravate cell death. These factors may lead to ischemic necrosis of muscle cells after exercise.
Extended data:
Seven manifestations of excessive exercise
1, feeling very tired.
Physical fatigue after exercise is normal, but if fatigue lasts for 2-3 days or longer, it may be the result of excessive exercise. At this time, it is necessary to temporarily stop exercising and let the body fully recover.
2, muscle pain
After exercise and fitness, lactic acid accumulation and muscle pain are normal, but if the pain lasts for 3-4 days or longer, the exercise intensity will decrease. If it is serious, you should stop exercising immediately and do massage and physical therapy at the same time.
3, loss of appetite
It is because of excessive exercise that it stimulates the body too much and inhibits your appetite. At this time, we should pay attention to the nutrition and collocation of diet.
4. Nausea and vomiting
Nausea and vomiting after exercise, if not caused by diet, are mostly caused by excessive exercise and lack of oxygen. Exercisers should start with a small amount of exercise and step by step.
5, dizziness and headache
This happens after strenuous exercise, which is mainly related to changes in blood pressure and low oxygen content in blood.
Step 6 be thirsty
Thirst is normal after a lot of exercise, but pay attention to hydration before, during and after exercise.
7. Feel mental stress
If you feel tired after exercise, you should adjust yourself in time and reduce the amount of exercise.
It is moderate to exercise three times a week.
Researchers at the University of Toronto in Canada said that moderate exercise is aerobic exercise three times a week, while high-intensity, high-intensity exercise five times a week or more will reduce immunity.
In the past, scientists didn't notice that excessive exercise did harm to the immune system. These athletes are more likely to catch a cold, and moderate and moderate intensity exercise can improve immunity and fight against viral or bacterial infections.
In this study, the University of Toronto asked people aged 65,438+09-29 who did not exercise regularly to do 40-minute aerobic exercise three to five times a week for 65,438+02 weeks.
Then, through blood tests, it was found that the number of CD 16 killer cells increased by 27% for people who exercised three times a week, but only increased by 2 1% for people who exercised five times a week, while the number of immune cells decreased by 33% for people who exercised three times a week, but there was no change.
Therefore, although exercise can lose weight and improve heart and lung function, it is the best way to prevent heart aging, but excessive exercise is not appropriate. As long as you insist on 30 minutes of aerobic exercise three times a week, you can achieve healthy results.
References:
People's Network-Does high-intensity exercise lead to muscle dissolution? Excessive exercise that "can't afford to hurt"