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.

Attention should be paid to the extended data vital capacity test:

First of all, don't be nervous when testing, and the blowing effect with moderate speed and intensity is the best; Secondly, the tester holds the mouthpiece and tries to blow 1 2 times in front of the spirometer to see if the instrument responds, and also tries to see if the mouthpiece and nose and mouth are leaking.

Then the tester takes a deep breath 1-2 times than usual, and then takes a deep breath again (avoid shrugging your shoulders and lifting your breath, it should be like smelling fancy slowly). Finally, the tester holds the vent and mouthpiece tightly, leaving no gap, and exhales into the mouthpiece until he can no longer exhale, so as to prevent inhaling from the mouthpiece at this time, and inhaling twice is not allowed in the middle of the test.

Baidu encyclopedia-vital capacity

People's Network-Is vital capacity related to aging? Teach you 4 tricks to exercise your vital capacity