PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The heart rate decreases and beats with greater force
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The heart rate decreases and beats with lower force
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The heart rate increases and beats with lower force
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The heart rate increases and beats with greater force
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Detailed explanation-1: -During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
Detailed explanation-2: -At the onset of exercise, heart rate normally increases primarily by parasympathetic withdrawal. As exercise reaches more vigorous levels, sympathetic activation contributes progressively more to attaining and maintaining exercise tachycardia.
Detailed explanation-3: -Your heart rate will increase in proportion to the intensity of your exercise. You can track and guide your exercise intensity by calculating your Target Heart Rate (THR) range. For moderate-intensity physical activity, a person’s THR should be 50 to 70 per cent of their maximum heart rate.