What is a metabolic equivalent of task (MET)?

A metabolic equivalent of task (MET) is defined as a unit that measures the energy expenditure associated with physical activities. Specifically, one MET is equivalent to the energy cost of sitting quietly, which is approximately 3.5 milliliters of oxygen per kilogram of body weight per minute. This standardized measurement allows for comparison between different types of physical activities in terms of how much energy they require.

Using METs provides a practical framework for understanding the intensity of various exercises. For example, walking at a moderate pace may be around 3 METs, while running could range from 7 to over 10 METs depending on speed and individual fitness levels. By quantifying activities in this way, individuals can set fitness goals, monitor their exercise intensity, and create balanced workout routines that align with their health objectives.

Comparatively, the other options do not accurately represent the function of METs. While strength training involves its own types of assessments and benchmarks, it does not function as a metabolic measure. Body composition assessments focus on the ratios of muscle, fat, and other components in the body, rather than energy expenditure. Nutritional metrics pertain to calorie intake and nutritional values rather than activity-based energy expenditure measurement. Thus, the correct identification of MET as