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Understanding Heart Rate Variations During Different Activities

This exploration delves into how heart rate differs when lying down versus sitting and examines the impact of fitness levels on heart rate changes upon standing. It addresses why individuals with cardiac conditions should steer clear of strenuous exercise and compares the recovery time to resting pulse rates between partners. Lastly, it explains the increase in oxygen demand with heightened activity levels using the principles of cellular respiration and its equation, highlighting the relationship between exercise and metabolic processes.

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Understanding Heart Rate Variations During Different Activities

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  1. DQ’s for Determining HR • Explain the difference in your pulse when you were laying down versus sitting. • Do you think a person who is more physically fit than another person would exhibit a larger or smaller difference in pulse rate upon standing? Explain. • Why should people with a “diseased heart” avoid strenuous exercise? • Compare the time it took you to return back to your resting pulse with a partner. How does it compare and why. • Why was there an increase in demand for O2 as you increased the activity level? (Hint: this will require several sentences to explain. Refer to the cellular respiration equation.)

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