Evaluate the Effect of Dietary Supplement on Muscle Mass and Physical Performance for Over 50 Years Old People

MRI eligibility evaluation Dietary supplement drink powder dissolved in 150 c.c. warm water oral intake twice daily at every morning and night (30 minutes after exercise if do exercise) for 12 weeks subjects will be instructed to do 45-minute exercise once a week following the training program of the study trainer at gym, and 30-minute exercise (per exercise manual) at least twice a week at home.

MRI eligibility evaluation vitamin B drink powder dissolved in 150 c.c. warm water oral intake twice daily at every morning and night (30 minutes after exercise if do exercise)for 12 weeks subjects will be instructed to do 45-minute exercise once a week following the training program of the study trainer at gym, and 30-minute exercise (per exercise manual) at least twice a week at home.