Testing the Effect of Exercise Intervention Using a SMART Design.

Exclusion Criteria

• •This study will exclude residents with (a) recent unstable condition involving stroke or those with heart disease, handicap, pregnancy, mental disorders, systolic BP \> 200 mmHg, or diastolic BP \>110 mmHg; and (b) those with contraindications in body composition analyzer measurement including people with pacemakers, artificial metal joints, amputated hands or feet, and those who cannot be cooperated with standing during testing.