The lung capacity to collect oxygen can only be measured by a expert physician. But for mere estimate, the respiratory rhythm when perform activities could be the standard for layman. If you quickly exhausted, it is a sign that your lung capacity is weak. The lung capacity, called the VO2max, is one of the parameters of someone’s fitness. The greater value of VO2max, the greater ability of the lungs to supply oxygen during the activites.
If the ability of the lungs to supply oxygen is limited, then you will easily exhausted when doing the activities, especially for heavy activities. The lungs and heart will work harder to pump the oxygen which needed by muscles to function properly.
Several factors can affect lung capacity. Daily physical activity is one of main factor. Thus, someone who rarely moves tend to have low lung capacity. Step length when walking, making the lungs work more efficiently. Due to the same mileage, the number of steps will be fewer. Age also affected, because the ability to move will decrease when getting older.
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