Inclusion Criteria of phase I study  Healthy Volunteer (can walk 15 meters independently or with assistive devices). Aged 20-70 years old. Mini-mental state examination (MMSE) points above 24. Not familiar with POWER rehabilitation machines before this study. Able to understand POWER rehabilitation training and test items. Able to use smart devices and be willing to cooperate with pre-acceptance instructions. Able to communicate in Mandarin or Taiwanese, and be able to clearly express uncomfortable feelings. Willing to participate in this study after explanations, and sign the subject's informed consent.  Inclusion Criteria of phase II study  Diagnosed as Idiopathic Parkinsonism by Neurologist PD stages of I-III according to the modified Hoehn and Yahr Scale Aged 45-85 years old Mini-mental state testing (MMSE) 24 points or more Stable medication regimen for at least 2 weeks before the trial Can walk 15 meters independently or with devices Able to understand treatment and assessment Able to understand and be willing to agree to the informed consent form  Exclusion Criteria of phase I study  People who do not use smart devices and are unwilling to cooperate with the pre-acceptance instructions. Have severe hearing or vision impairments. Pregnant or breast-feeding. Any chronic condition that may cause safety concerns. Having any diseases which are contraindications for exercise participation. Muscle strength is affected by taking drugs. Have been to the gym 6 months before participating in the study (e.g. aerobic exercise, resistance training). Severe orthopedic diseases (unhealed fractures, severe joint destructions, and joints with fixed deformities, etc.). Severe or unstable neurological or cardiopulmonary diseases (severe cases of stroke and myocardial infarction in the acute phase, arrhythmia or uncontrolled blood pressure, etc.). Diagnosed with any mental illness (e.g., depression, psychosis or other mental illnesses) Unwilling to participate in this research.  Exclusion Criteria of phase II study  Rheumatism Cardiovascular diseases or respiratory diseases (e.g., angina pectoris, pulmonary embolism, etc.) Severe or unstable neurological or orthopedic diseases. Severe hearing or vision impairments Diagnosed with any mental illness(e.g., depression, psychosis or other mental illnesses) A history of epilepsy. Pregnancy or pregnancy Any uncontrolled disease.