Regular aerobic activity improves the efficiency of the heart by A. thinning the blood. B. decreasing the blood volume. C. strengthening the skeletal muscles. D. increasing the amount of blood pumped with each heartbeat.

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Regular aerobic activity improves the efficiency of the heart by increasing the amount of blood pumped with each heartbeat.

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Asked 6/21/2010 12:41:15 AM

Updated 7/26/2015 11:40:25 PM

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matahari

Regular aerobic activity improves the efficiency of the heart by increasing the amount of blood pumped with each heartbeat.

Added 7/26/2015 11:40:25 PM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [7/27/2015 12:10:13 AM]

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emdjay23

Carbohydrates supplies us with the energy needed to sustain normal daily activity.

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Which is true about target heart rate? A. It is a percentage of your maximum heart rate. B. People in poor physical condition should exercise above their target heart rate until they are in better shape. C. It is a measure of the heart rate after 20 minutes of exercise. D. It varies by a person's body weight.

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Updated 12/27/2016 6:42:59 PM

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matahari

It is a percentage of your maximum heart rate. -is true about target heart rate.

Added 12/27/2016 6:42:59 PM

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Confirmed by Andrew. [12/29/2016 9:24:52 AM]

Janice has been lifting 95 pounds while doing three sets of 10 leg curls. To become stronger, she began lifting 105 pounds while doing leg curls. What principle of strength development does this represent? A. tension principle B. flexibility principle C. overload principle D. specificity-of-training principle

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Updated 12/27/2016 6:37:40 PM

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matahari

Janice has been lifting 95 pounds while doing three sets of 10 leg curls. To become stronger, she began lifting 105 pounds while doing leg curls.
The principle of strength development this represent is: overload principle.

Added 12/27/2016 6:37:40 PM

This answer has been confirmed as correct and helpful.

Confirmed by Andrew. [12/29/2016 9:30:47 AM]

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