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

Which benefit is more associated with strength-based classes as compared to cardio-based classes?

1. Improved cardiovascular endurance

2. Reduced risk of injury

3. Improved postural stability and muscular endurance

4. Enhanced agility and coordination

The correct answer is: Improved postural stability and muscular endurance

Strength-based classes are particularly effective for improving postural stability and muscular endurance due to the emphasis on resistance training and weight-bearing exercises. These classes often focus on enhancing muscle strength and endurance through various movements that require stabilizing the body — this not only helps with overall strength but also improves the ability to maintain good posture during physical activities. Additionally, many strength-based exercises engage core muscles, which are crucial for postural support and stability. This engagement can lead to better balance and alignment in everyday activities, contributing to a reduced likelihood of injuries related to poor posture or instability. In contrast, while benefits like improved cardiovascular endurance, reduced risk of injury, and enhanced agility and coordination can be associated with various forms of exercise, they are more strongly linked to specific characteristics of cardio-based or other types of fitness classes. Cardio sessions primarily focus on heart and lung capability, while agility and coordination often stem from dynamic, fast-paced movements that are more prevalent in activities aimed at improving cardiovascular fitness rather than strength.