Abstract
The ever-growing population of older adults and the associated age-related physiological changes that occur are increasing the need for physical therapy and exercise in this group. This article will describe some of these physiological changes, review the changes that exercise can make on these changes, as well as provide information about principles and benefits of aquatic exercise. There are a number of standardized outcome measures that can be used to quantify improvements in health, which will also be discussed. A case study at the end ties all of the information together for a practical demonstration of the benefits of aquatic exercise.