What factors determine the size of the lung capacity

Lung capacity: refers to the amount of air exhaled after a maximum inhalation in the case of unlimited time, which represents the maximum functional activity of the lungs at one time, and is one of the important functional indicators reflecting the level of human growth and development. Lung capacity can show a person's cardiopulmonary function, and people with high lung capacity have a stronger ability to supply oxygen to the body.

Spirometry Criteria: An increase in lung capacity is an important marker of lung development. Male students by 17-18 years approaching or reaching adult lung capacity.

The lung capacity of an adult male is about 3500-4000 ml. Women reach the lung capacity of an adult woman by the age of 16-17, and the lung capacity of an adult woman can reach 2500-3500 ml.

Lung capacity is determined by these factors: the size of lung capacity is related to factors such as gender, age, height, weight, chest circumference, and physical activity.

Affected by factors such as age, gender, body size, strength of respiratory muscles, and elasticity of the lungs and chest, the stronger the body, the larger it becomes.

Lung capacity is closely related to a person's breathing. Physiological studies have shown that all organs, systems, tissues, and cells of the human body are consuming oxygen all the time, and the body can only work normally when there is enough oxygen.

The oxygen supply inside the human body is all obtained by the respiration of the lungs, and in the process of breathing, the lungs not only take in oxygen, but also excrete the carbon dioxide metabolized by the body. We can think that the lung is the transfer station of the body's gas exchange, and the volume of this transfer station directly determines the amount of gas exchange for each breath, which is the most intuitive and objective indicator to detect lung function.

To a certain extent, the size of the lung capacity shows the quality of the pin type ().

a.Neurological function.

b.Breath deficit touch guess function.

c.Athletic skills are noisy.

d.Digestive function.

Correct answer: B

Because lung capacity is positively correlated with body weight, if we only look at lung capacity, then the lung capacity of people with a large body weight is the largest among the average person, but there will be a lot of obese people in people who are heavy and they do not have a strong ability to exercise. So we have to think about relative size, which is a reasonable measure. The higher the spirometry divided by body weight, the higher the level.

In general, the people with the highest lung capacity are cyclists, swimmers, and long-distance runners. Because they have been training for a long time in aerobic exercise, their lung capacity has increased dramatically.

This value reflects the influence of factors such as life growth, age, gender, body size, respiratory muscle strength, lung and chest elasticity, etc. The stronger your body, the more vigorously you can exhale the maximum amount of air you can exhale after inhaling deeply and then exhaling forcefully, even if you exhale as hard as you can. Ways to improve vitality:

Chest expansion exercises: Expand the chest twice a day and expand the chest horizontally. There are a number of physiological and pathological factors associated with low human vitality.

The main reasons include: physiological factors that lead to a decrease in vitality, which may be due to the lack of long-term exercise, but it is not excluded that the strength of the respiratory muscles, the elasticity of the lungs of the chest is in good health.

In addition to the health status, the active lung capacity is also closely related to the size of the thoracic cavity and muscle function, but the most important factor is that the higher the chest storage wall force, the lower the vitality of adults in terms of age, which may be physiological or pathological factors. Physiological factors mainly include few respiratory muscles or poor breathing ability, lack of exercise, etc. In general, it is possible to return to normal levels with proper exercise.

Being too small is related to lifestyle habits. People who don't exercise regularly or have an unhealthy diet, often stay up late, and people who are not in good health have relatively little ability to live.

There are many factors that affect lung capacity, such as age, gender, weight, and chest shape, which are related to age, sex, weight, and chest shape. At the same time, smoking, occupational dust exposure, and chronic respiratory diseases are external factors affecting life expectancy. Since vitality is the main intrinsic factor in the physical examination process, the older the age, the lower the vitality, and the vitality of men is relatively higher than that of women.

1.The size of lung capacity is related to factors such as gender, age, height, weight, chest circumference, and physical activity.

2.The lung capacity of a normal adult in China is about 3500 4000 ml for men and 2500 3 000 ml for women.

3.Athletes with a high level of training can reach more than 5 000 ml.

4.Lung capacity is an important indicator of lung function, a large lung capacity means that your respiratory system is strong and can provide enough oxygen to the body, so your body is stronger, jumps higher, and runs faster; It also provides enough oxygen to the brain, so it also strengthens the ability to think and move.