Biomechanical Characteristics of Lower Extremity During Pinnacle Trainer With Different Pedal Angles

To investigate the effects of pedal degree on the biomechanical characteristics of the healthy adults' lower limbs during stepping on the pinnacle trainer.The purpose of this study are compare the biomechanical characteristics of low limbs at different angle of pedal during stepping on Pinnacle trainer. The investigators hope to provide this outcome to therapists can make the rehabilitation training more effective and delay the disease progression of KOA patients.

Inclusion Criteria:30 healthy individuals above 20 years and will be recruited in this study. 30 participants will be recruited with considering the inclusion criteria as follows:20 years old aboveAble to perform regular exerciseAble to understand Chinese or Taiwanese languageHealthy adult (no skeletal muscle, neurological disease, normal BMI (18.5≦BMI<25.0), and no disease that will affect training.Exclusion Criteria:Having illness or diseases that cannot perform physical exerciseHaving any kinds of chronic disease that might be more activated by performing Pinnacle training such as cardiovascular diseases, chronic respiratory diseases, osteoporosis, etc.Having chronic diseases that cannot perform Pinnacle training according to the experimental protocols such as blindness, deafness and hearing impairment, etc.