Effect of exercise and protein supplementation on the physical function and muscle force in frail elderly people : an intervention study

INTERVENTION: (Exercise group) Taking a couple of tea after exercise twice a week at care prevention school of Himi city. (Protein group) Taking protein supplement (20g at a time) after exercise twice a week at care prevention school of Himi city. (EMR group) Taking protein supplement (20g at a time) including EMR (enzymatically modified rutin) (42mg) after exercise twice a week at care prevention school of Himi city. CONDITION: healthy person (frail elderly people) PRIMARY OUTCOME: 1) Change from baseline of muscle thickness at 3, 6 months.; 2) Change from baseline of five‐repetition sit‐to‐stand test time at 3, 6 months. SECONDARY OUTCOME: 1) Change from baseline of five‐repetition sit‐to‐stand test time at 3, 6 months.; 2) Change from baseline of 5 m walking speed at 3, 6 months.; 3) Change from baseline of Get‐Up and Go test time at 3, 6 months; 4) Change from baseline of one‐legged blind balance time at 3, 6 months; 5) Change from baseline of grip strength at 3, 6 months; 6) Change from baseline of visual analog scale score at 3, 6 months INCLUSION CRITERIA: A person who attends care prevention school of Himi city