ACE Personal Trainer Practice Exam

What is the definition of a Metabolic Equivalent (MET)?

1. Caloric expenditure per minute

2. Maximum heart rate achieved during exercise

3. Resting oxygen consumption

4. Measurement of muscle endurance

The correct answer is: Resting oxygen consumption

The definition of a Metabolic Equivalent (MET) is related to resting oxygen consumption. Specifically, one MET is defined as the amount of oxygen consumed while at rest, which is approximately 3.5 milliliters of oxygen per kilogram of body weight per minute. This measure allows for the comparison of different physical activities and their energy expenditure relative to resting energy levels. Using METs provides a convenient way to express the intensity of physical activities: a value of 2 METs would indicate an activity that requires twice the resting metabolic rate, while a value of 5 METs would indicate an activity that requires five times the resting metabolic rate. This understanding is crucial for personal trainers as they design fitness programs and assess the intensity of exercises based on the individual's capabilities and goals. The other choices do not accurately describe METs. Caloric expenditure per minute relates to the total energy burnt during an activity, maximum heart rate is a cardiovascular measurement, and measurement of muscle endurance refers to muscular performance rather than metabolic processes.