What heart rate changes are observed as a result of chronic aerobic training?

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Chronic aerobic training typically leads to a decrease in both resting heart rate and submaximal heart rate for a standard exercise task. This is due to an increase in the size and strength of the heart, which leads to an increase in stroke volume (the amount of blood pumped with each beat of the heart). As a result, the heart has to work less hard to meet the demands of the body during exercise and at rest.

What Heart Rate Changes Are Observed as a Result of Chronic