Group Fitness Instructor

Answer: C - The Group Fitness Instructor who instructs aquatic exercise must be aware that traditional heart rate monitoring is inappropriate for aquatic exercise. Instead, participants should be instructed to either use the Talk Test or a Rating of Perceived Exertion (RPE).During vertical immersion in water, hydrostatic pressure pushes blood and other bodily fluids from the feet back into the thorax. This produces an efficient stroke volume (by producing a stretch-related improvement in the heart’s contraction). Because of this increase in stroke volume, the heart does not need to increase its rate as much when exercising in water as it does on land.