Physical activity and quality of life of older people decline as age increases and with associated chronic diseases. The quality of life of patients was assessed using generic measures in Saudi Arabian patients. The objective of this cross-sectional study was to evaluate the quality of life among Osteoarthritis knee patients who have modified their lifestyle and adapted to chair usage to offer prayers using disease-specific knee measures. A total of 107 subjects have been evaluated among Muslims with a chair usage history to offer the prayers. There is a statistically significant difference (p < 0.001) among the history of chair users to offer prayers. Function as well as quality of life has been declined over the years, that is, from 0 to 9 years of modified (chair use) prayer in Saudi Arabian Muslims.
Keywords: Muslims; Osteoarthritis knee; Physical function; Quality of life; Saudi Arabia.