Discussion
In this study, we utilized Tai Chi exercise as an intervention in healthy aged individuals, taking into account age-related changes in physical health (physical fitness) and cognitive function (executive function, self-control). The development of SWB was compared between the Tai Chi intervention group and the group of aged individuals with normal living habits (no exercise). This study verified that Tai Chi intervention has a promoting effect on SWB, cognitive function, and physical fitness in aged people, and also verified that cognitive function and physical fitness play a mediating role in it.