1. Department of Production Technology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand
2. Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Khon Kaen, Thailand
3. Faculty of Physical Therapy, Saint Louis College, Bangkok, Thailand
4. Division of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand