Combining upper and lower body movements while performing water aerobics may take some practice and coordination, but it enhances the aerobic intensity of the workout and allows all major body muscles to be exercised in less time, notes IFA Fitness. Combined movements can either be corresponding or opposite.
Water aerobics is an excellent form of exercise. The water provides resistance to work the muscles and also prevents damaging impact on the joints. Water aerobics burns as many calories as an equivalent land-based exercise, improves flexibility and improves balance and posture. It is more difficult to perform strength-training in water than on land, but special devices can be used to increase resistance and therefore work the muscles harder (such as foam devices or web-gloves). Due to its low-impact nature, water exercise does not help maintain bone mass, according to IFA Fitness.
Water-based exercises reduce body weight by about 90 percent when a person is immersed to the chest level and about 50 percent when a person is immersed to the waist. According to IFA Fitness, a good water aerobics workout should start with a short warm-up and end with a cool-down. Combining arm movements with the various lower-body movements may take some practice and coordination at first, but enhances the workout. For example, water jogging can be performed at the same time as biceps curls, and shoulder shrugs can be performed while doing jumping moves.
IFA Fitness describes combined moves as being either corresponding, where the arm and leg on the same side of the body move together (for example, lift the left knee to the chest while simultaneously performing a biceps curl with the left arm), or opposite, where the arm and leg on opposite sides of the body move together (kicking out with the left leg while lifting the right arm).