The role of physical fitness in the relationship between physical exercise and SWB
prolonged sedentary behavior, ’s SWB
Many studies have found that physical fitness has a significant impact on an individual’s SWB [For the aged, with aging and prolonged sedentary behavior, their physical health gradually declines, manifested in weakened muscle strength, endurance, flexibility, and balance abilities [To summarize, physical exercise first improves the physical fitness of the aged, and then further enhances their SWB. Thus, we propose hypothesis 2: physical fitness mediates the relationship between Tai Chi exercise and SWB in the aged.