National Council for Therapeutic Recreation Certification (NCTRC) Practice Exam

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In order to benefit from aerobic exercise, individuals need to reach and stay within their target heart rate for at least twenty minutes. What is the formula for calculating this?

Age-minus 20, times 1.5
60 to 75 percent of normal maximum heart rate
Weight minus 15, plus age
40 percent of normal maximum heart rate

The correct answer is: 60 to 75 percent of normal maximum heart rate

The reason that calculating the target heart rate using the method of 60 to 75 percent of the normal maximum heart rate is accurate is because it ensures that individuals engage in aerobic exercise with sufficient intensity to achieve cardiovascular benefits. The maximum heart rate is commonly estimated by subtracting an individual's age from 220. By taking 60 to 75 percent of this maximum, individuals can determine a range that indicates moderate to vigorous intensity, which is essential for improving cardiovascular fitness and overall health. This range is widely recognized within the fitness community and supported by numerous studies on exercise physiology. When individuals exercise within this heart rate zone for at least twenty minutes, they are likely to achieve the cardiovascular and respiratory improvements associated with aerobic exercise, thereby enhancing their endurance and fitness levels. The other options lack accuracy in targeting the heart rate effectively as they either do not utilize established formulas based on maximum heart rate or fail to provide a clear range for aerobic intensity.