According to ACSM guidelines, what is the recommended weekly frequency for aerobic exercise in healthy adults?

The recommended weekly frequency for aerobic exercise in healthy adults, as per the ACSM guidelines, emphasizes achieving at least 150 minutes of moderate-intensity exercise or 75 minutes of high-intensity exercise. This guideline is grounded in extensive research demonstrating the health benefits associated with regular aerobic activity, including improved cardiovascular health, weight management, and enhanced metabolic function.

Moderate-intensity exercise is defined as activities that elevate the heart rate and make breathing faster but still allow a person to talk comfortably, while high-intensity exercise significantly increases heart rate and makes conversation challenging. By recommending a spectrum of intensity levels, ACSM accommodates varying fitness levels and preferences, ensuring that more individuals can engage in regular physical activity to achieve health benefits. This flexibility is crucial for promoting long-term adherence to exercise.

The other options do not align with the guidelines. Suggesting 300 minutes of moderate-intensity, for instance, exceeds the recommended baseline and could potentially deter individuals from participating regularly due to perceived barriers. Similarly, recommending only low-intensity or minimal durations of moderate-intensity exercise does not meet the established thresholds for effective health improvement, which underscores the importance of the correct answer in promoting optimal health through regular exercise.