1) When a person walks at chest height in water, the buoyant force of water results in a 90% reduction in body weight and strengthens abdominal region.
2) The density of water is approx. 800 times that of air, which is an important contribution to the energy expended through water exercise.
3) The combined influence of water temperature and hydrostatic pressure contribute to a lower heart rate (approx. 20 bpm) when exercising in water. It is also been established that heart rate response in water depends considerably on water temperature.