ACSM Personal Trainer Certification Practice Exam 2025 - Free Personal Trainer Practice Questions and Study Guide

Chronic aerobic exercise training leads to various cardiovascular adaptations that enhance overall fitness and efficiency. One of the key adaptations is a decrease in resting heart rate, which occurs due to improved cardiovascular efficiency. With regular aerobic training, the heart becomes stronger and more efficient at pumping blood. As a result, it can send a greater amount of blood with each contraction, enabling a lower heart rate at rest.

This adaptation is beneficial as it indicates improved cardiovascular health and fitness levels. A lower resting heart rate reduces the overall workload on the heart during day-to-day activities and is associated with better endurance during physical exertion.

In contrast, other options, such as a decrease in stroke volume, would not align with the expected physiological changes from aerobic training; typically, stroke volume increases due to enhanced cardiac output. Similarly, an increase in blood lactate during exercise would suggest a decrease in aerobic capacity, which is contrary to the effects of regular training. Lastly, an increase in resting blood pressure is not a typical outcome of aerobic training either; rather, aerobic exercise is generally associated with reduced resting blood pressure, promoting better cardiovascular health.