farzad farmani department of orthotics & prosthetics, school of rehabilitation sciences, hamedan university of medical sciences, hamadan, iran.سازمان های دیگر: department of orthotics & prosthetics, university of social welfare and rehabilitation sciences, tehran, iran. mohammad ali mohseni-bandpei iranian research centre on aging, department of physiotherapy, university of social welfare and rehabilitation sciences, kodakyar ave., daneshjoo blvd., evin, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)سازمان های دیگر: institute of physical therapy, faculty of allied health sciences, university of lahore, lahore, pakistan. mahmood bahramizadeh department of orthotics & prosthetics, university of social welfare and rehabilitation sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم بهزیستی و توانبخشی (university of social welfare and rehabilitation sciences) gholamreza aminian department of orthotics & prosthetics, university of social welfare and rehabilitation sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم بهزیستی و توانبخشی (university of social welfare and rehabilitation sciences) mohammad reza nikoo department of orthotics & prosthetics, school of rehabilitation sciences, hamedan university of medical sciences, hamadan, iran.سازمان اصلی تایید شده: دانشگاه علوم بهزیستی و توانبخشی (university of social welfare and rehabilitation sciences)