Group Fitness Instructor

Answer: C - Aquatic exercise is a powerful option for individuals looking for exercise without the concomitant joint or weight bearing stresses. When immersed to the hip level, individuals lose approximately 50% of their body weight. When immersed to the chest, body weight drops to 25% of normal and when immersed to the neck, it drops again, to 10%. It is important for instructors to remember that these numbers reflect weight at rest. Once the class member starts to move, weigh- bearing forces increase, just as they do on land.