During prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

Here's why:

1. When you exercise, your muscles need more oxygen to produce energy, so your heart rate increases to pump more blood (which carries oxygen) to your muscles.

2. If you don't replace fluids that you lose through sweating during exercise, you can become dehydrated. Dehydration decreases your blood volume.

3. With less blood volume, your heart has less blood to pump with each beat. This is known as reduced stroke volume.

4. To compensate for the reduced stroke volume, your heart rate increases even more to try to deliver the same amount of oxygen to your muscles.

So, in summary, during prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

Question

During prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

Here's why:

1. When you exercise, your muscles need more oxygen to produce energy, so your heart rate increases to pump more blood (which carries oxygen) to your muscles.

2. If you don't replace fluids that you lose through sweating during exercise, you can become dehydrated. Dehydration decreases your blood volume.

3. With less blood volume, your heart has less blood to pump with each beat. This is known as reduced stroke volume.

4. To compensate for the reduced stroke volume, your heart rate increases even more to try to deliver the same amount of oxygen to your muscles.

So, in summary, during prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

Knowee AI · Accepted Answer

During prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

Here's why:

1. When you exercise, your muscles need more oxygen to produce energy, so your heart rate increases to pump more blood (which carries oxygen) to your muscles.

2. If you don't replace fluids that you lose through sweating during exercise, you can become dehydrated. Dehydration decreases your blood volume.

3. With less blood volume, your heart has less blood to pump with each beat. This is known as reduced stroke volume.

4. To compensate for the reduced stroke volume, your heart rate increases even more to try to deliver the same amount of oxygen to your muscles.

So, in summary, during prolonged, strenuous exercise without fluid replacement, the increase in heart rate is associated with reduced stroke volume.

During prolonged, strenuous exercise without fluid replacement the increase in heart rate is associated with:Group of answer choicesreduced stroke volumereduced plasma adrenalineincreased vagal activity

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