Respiratory rate increased from 16 to 19 breaths per minute is vital signs during activity would be the best indicator that the client is tolerating mild exercise.
Your body utilizes more oxygen during exercise and creates more carbon dioxide when your muscles perform harder. Your breathing has to increase from about 15 times per minute while you are resting to about 40–60 times per minute while you are exercising in order to meet this additional requirement. To supply the body with oxygen more quickly, breathing rate rises. To more effectively get the oxygen (and glucose) to the breathing muscles, the heart rate increases. These procedures call for oxygen. Because of this, when an activity is completed, a person's respiration and pulse rate do not immediately return to normal. The oxygen debt is the quantity of oxygen needed to flush out the lactic acid and replenish the body's oxygen stores.
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