Clearly explain whether the following responses are normal, or not. A. HR response to rising exercise...

Clearly explain whether the following responses are normal, or not.

A. HR response to rising exercise intensity (hint look at MET and HR increases together)

B. Peak HR reached

C. HR recovery after the test

Expert Solution

A . HR response to rising exercise intensity

It is a normal physiologic response , that Heart rate increases with increasing intensity of exercise. HR increases in a linear fashion along with the intensity increase in exercise like running, walking, jogging etc.

During exercise, the muscles are in increased need of oxygen and nutrients, three time more than the resting time. To meet the need heart starts to pump fast , leads to increase in heart rate ( HR) and pulse. Respiratory rate increases along with to meet the need of extra oxygen. When there is increase in intensity of exercise, then the HR also getting increased. But heart rate beyond 185 bpm during exercise is dangerous.

B. A peak heart rate can be achieved during the exercise. A person can reach upto his maximum level of heart rate with intense exercise. Maximum level of HR can be calculated by subtracting one's age from 220. An individual can reach upto this maximum level of HR while doing exercise. According to American Heart Association, the beginners can do the exercise with a Heart rate of 50 to 75 % of maximum HR and others can reach upto 85 % of maximum HR.

C. HR recovery after the rest

It is normal that HR recovery happens with the rest. When there is a reduction in need of oxygen and blood supply to the muscles and tissues, there comes less demand, heart no longer needs to pump in fast. Heart need time to recover and to reduce the heart rate. 'Heart Rate Recovery Time' referred to the time that a person need for his heart to resume to the resting heart beat. 25 to 30 beats have to reduce in one minute, then it indicates a good health. A reduction of 50 beats indicates excellent score.

Nightingale answered 1 year ago

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