What is the formula for determining heart rate reserve?

The formula for determining heart rate reserve is indeed represented by taking the maximum heart rate minus the resting heart rate, then multiplying the result by the desired intensity, and finally adding the resting heart rate back in. This method is used to tailor an exercise intensity that is personalized based on the individual's fitness level.

By using this formula, you can calculate the target heart rate for a specific exercise intensity. The heart rate reserve is a good measure of how much more exertion an individual can handle above their resting level. It helps in prescribing exercise intensity, ensuring that individuals are working within a safe and effective range that is specific to their cardiovascular capacity. This tailored approach supports the goals of weight loss as clients are guided to exert themselves to a level that promotes greater energy expenditure while still being appropriate for their fitness level.

The other options do not accurately represent the heart rate reserve concept. They either misuse the addition of heart rates or misapply the concept of exercising at an intensity level that is operationally useful for training.