National Academy of Sports Medicine (NASM) Group Fitness Instructor Practice Exam

How is the effectiveness of stretching measured in a fitness program?

1. Through muscle endurance tests

2. By assessing range of motion

3. By observing muscle hypertrophy

4. Based on calorie expenditure

The correct answer is: By assessing range of motion

The effectiveness of stretching in a fitness program is best measured by assessing range of motion. This approach focuses on how much flexibility and mobility an individual has in their joints, which is directly influenced by their stretching routine. Increased range of motion indicates that the stretching exercises are effectively enhancing flexibility, allowing for better performance in both daily activities and various physical exercises. Muscle endurance tests, muscle hypertrophy observations, and calorie expenditure are not direct measures of stretching effectiveness. While they may provide insights into other aspects of fitness, such as strength or energy expenditure, they do not specifically evaluate how stretching impacts flexibility and mobility, which are the primary goals of a stretching regimen.