Effects of the Combined Intervention of Exercise, Fruit, and Vitamin Supplementation on Frailty in Older Adults

"Group intervention~After each intervention, investigators will hold a 15-minute communication and discussion session for the participants. Besides, community health workers will organize at least one health education activity per week during the intervention for no less than 45 minutes.~Individual intervention~Physical activity~The participants will be gathered at the community activity center or day care center. The participants will be allowed to exercise in a way that interests them. The duration of exercise should be longer than 30 minutes.~Fruit supplementation~Consideration of seasonal supply situation and the participants' diabetic status, various types of fruit will be prepared. The fruit will be divided into 50g/100g servings. Participants will be required to eat on site.~Vitamin supplementation~During the intervention, the participants will be required to take 1 tablet of vitamin B complex plus 1 tablet of vitamin C every day."