Muscle samples are taken from two groups of men. One group performs regular intense aerobic exercise. The second group is sedentary and does not exercise. When you compare their muscle samples at the microscopic level, you expect to find that the exercising men show increases in

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Regular intense aerobic exercise leads to adaptations in muscle cells, including an increase in mitochondria, which are responsible for energy production, and an increase in capillary density to improve oxygen and nutrient delivery to the muscles.

Muscle Samples Are Taken from Two Groups of Men