Which of the following is NOT a method of determining exercise intensity?

Body mass index (BMI) is primarily a measure of body composition and health status, calculated based on an individual's height and weight. It does not provide information about cardiovascular fitness or how hard a person is exercising, making it unsuitable for determining exercise intensity. In contrast, methods such as heart rate reserve, peak VO2, and the talk test directly assess how hard the body is working during physical activity or provide guidelines to estimate effort level.

The heart rate reserve method involves calculating training intensity based on the difference between maximum heart rate and resting heart rate, while the peak VO2 method evaluates aerobic capacity to determine exercise intensity. The talk test assesses whether an individual can speak in full sentences while exercising, indicating their level of exertion. Each of these methods serves to quantify exercise intensity effectively, unlike BMI, which does not apply in this context.