ผลของโปรแกรมการออกกำลังกายแบบเพิ่มแรงต้าน และการจัดการด้านการยศาสตร์แบบมีส่วนร่วมต่อการดูแลตนเอง ความรุนแรงของโรคและสมรรถภาพข้อเข่าในชาวสวนยางพาราสูงอายุที่เป็นโรคข้อเข่าเสื่อม

Abstract

Background: Knee Osteoarthritis (OA) is one of the most common chronic diseases of aged para-rubber farmers in Thailand. Ergonomic hazards in their working processes lead to pain and severity of disease worsening caused by decreasing work capability and quality of life. Ergonomic management and muscle strengthening exercise, especially progressive resistance exercise could reduce those problems, and increase functional ability in daily living. Objective: To investigate effects of progressive resistance exercise and ergonomic self- care management on self-care, disease severity and physical function of aged para- rubber farmers with knee OA Design: A single-blinded, clustered randomized controlled trial was carried out. Participants (n =50) from 2 different communities were randomly assigned to experimental (n=25) and control group (n=25). The experimental group received group activity, 8-weeks progressive resistance exercise and ergonomic self-care management and the control group received standard treatment care. Self-care questionnaire, Thai version of Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Timed Up and Go Test (TUG), 40m Fast-Paced Walk Test (FPWT) and Stair Climb Test (SCT) were measured at baseline, 4th week and 8th week. Generalized linear mixed model were used to compare means of those outcomes overtime. Results: The experiment group has significant higher mean of Self-care behaviors, WOMAC, TUG, FPWT, and SCT than control group (p-value < 0.05). Conclusion: Progressive resistance exercise and participatory ergonomic approach could enhance self-care behaviors, decrease severity of knee OA, and increase functional ability in the aged para-rubber farmers with knee OA.