What is a staple aerobic exercise commonly performed in Aqua Fitness?

Jumping jacks performed in water are a staple aerobic exercise commonly used in Aqua Fitness. This exercise leverages the resistance of the water, which provides a more intense workout while reducing impact on the joints compared to performing the same movement on land. The buoyancy of the water allows for a full range of motion, helping to develop cardiovascular endurance and muscle strength simultaneously.

While the other options are effective forms of exercise, they do not embody the unique characteristics of Aqua Fitness as well as jumping jacks in water does. Running on the pool deck involves land-based movement, swimming laps is more of a skill-focused activity primarily associated with swimming rather than a group exercise setting, and water walking is beneficial for lower-intensity workouts. Jumping jacks in water, however, combines cardiovascular training with the advantages of an aquatic environment, making it a quintessential activity in Aqua Fitness programs.