What range corresponds to 50%, 70%, and 85% of maximum heart rate?

The correct response identifies the classification of exercise intensities based on percentages of maximum heart rate. At 50% of maximum heart rate, the intensity is considered low as it aligns with light physical activity that can typically be sustained for long durations, making it great for warm-ups or recovery days.

At 70%, the intensity is classified as moderate, which is often where aerobic training occurs; this level builds endurance and strengthens the cardiovascular system while allowing for conversation during the activity. This level of exertion is ideal for general fitness and improving overall heart health.

Finally, 85% of maximum heart rate falls into the high-intensity category, where the workout is challenging and requires significant effort. This intensity level is commonly associated with vigorous exercise, aimed at improving athletic performance and increasing cardiovascular capacity.

Together, the ranges of 50%, 70%, and 85% effectively represent low, moderate, and high exercise intensities based on the percentage of maximum heart rate, aligning with established guidelines in cardiovascular fitness training.