ABSTRACT. Introduction:Aging is a stage of life that increases the risk of physical diseases, some of which are chronic and can affect different dimensions of life's quality. In addition, These days, exercising is effective in preventing chronic diseases such as osteoarthritis. The goal of the present research is to study the effect of a period of exercise in water program on the scale of knee pain, the rate of symptoms and the movement problems in daily activities, sports activities and pastime activities and the quality of old adults life.Materials and methods: Fifteen old men afflicted with osteoarthritis were chosen purposely as the testees by age mean and Std 58±6.5, length 167.12±7.35 cms, weight 75.64±7.64. We used global questionnaire of the consequences of knee injuries and osteoarthritis to collect data.The testees practiced the exercise in water program in ten weeks. we analyzed the achieved data by a correlated t-test at a meaningful level. (p<0.05).Results: Among the post-test and pre-test the symptoms scale p=0.043, knee pain p=0.024, movement operation in daily and pastime activities p=0.018 were recovered meaningfully after the program.
Conclusion:The results showed that participating in an exercise in water program on a regular basis can be considered as an effective and reliable method to decrease pain, promote the operation of knee and the old men life's quality.