걷기 운동의 경우 연구에서는 12주간 실시되었으나 본 연구에서는 8주간만 실시되어 운동 기간에 따른 차이가 있을 것으로 생각된다.
In the case of walking exercise, it was conducted for 12 weeks, but in this study, it was only conducted for 8 weeks, and it is expected to have differences depending on the length of exercise.