Only when the oxygen supply is sufficient can the organs work normally. At the same time, the carbon dioxide produced by human metabolism must also be excreted through the lungs. Therefore, the lung capacity is large, and the ability to inhale oxygen and discharge waste gas is stronger.
After studying and exercising for a long time, the human body needs to consume a lot of oxygen. At this time, people with large lung capacity rarely have inattention, dizziness and chest tightness. People with large lung capacity can let more fresh air reach the alveoli in anoxic conditions such as plateau, so as to get enough oxygen in anoxic environment.
Extended data
Vital capacity varies with gender and age, and males are significantly higher than females. Lung capacity is also closely related to height, weight and chest circumference. Generally speaking, people with similar age and normal height and weight will not have much difference in vital capacity. If you take a deep breath and blow the balloon with the same elasticity, the person who blows the large balloon will have a relatively better lung capacity.
In the national physique standard, vital capacity is generally measured by a spirometer. In daily life, people can test themselves by climbing stairs.
For example, at the age of 25, the heart and lung function of the human body reaches the best state. At this time, if you climb four flights of stairs continuously, you will breathe naturally, but you will feel a little anxious, indicating that your vital capacity is basically normal; If you feel difficult to breathe and gasp badly, it means that your vital capacity may be lower than the normal standard and you need to strengthen your exercise. Old people can slow down and lower the floor when testing.
Decreased vital capacity will accelerate human aging. Generally, after the age of 35, with the increase of age, vital capacity began to decline gradually. At this time, the oxygen supply of human body is reduced by 5% to 10% compared with that of young people, and organ aging will also accelerate.
However, if we can persist in physical exercise, we can obviously improve the cardiopulmonary function and slow down the aging of the human body. Many long-distance runners and swimmers in their forties and fifties have the same vital capacity as young people in their twenties, and their physiological age is relatively younger.
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