Juthamard Kantasorn; Faculty of Physical Therapy, Mahidol UniversityWattana Jalayondeja; Faculty of Physical Therapy, Mahidol UniversityRungchai Chaunchaiyakul; Collaage of Sport Science and Technology, Mahidol UniversityChakarg Pongurgsorn; Department of Rehabilitation Medicine, Faculty of Medicine Siriraj Hospita, Mahidol University2011-02-202011-02-202010-04-112010-04-11Journal of Medical Technology and Physical Therapy; Volume 22 Number 1, January - April 2010; 71-81http://imsear.searo.who.int/handle/123456789/130773Please see attached pdf.en-USKhon Kaen UniversityORIGINAL ARTICLE