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Napaporn Tangadulrat,Pornit Wattanapisitkul,Tippawan Kaewmanee,Sangarun Isaramalai,Kanokwan Hounsri,Varah Yuenyongviwat,Chanon Kongkamol 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.4
Knee osteoarthritis (KOA) is one of the most prevalent chronic conditions among aged para rubber farmers in Thailand. The sapping process causes ergonomic hazards leading to aggravating pain and functional disabilities. Musclestrengthening exercises, both non-weight-bearing exercise (NWE) and progressive resistance exercise (PRE), reducethose burdens. However, only muscle strengthening exercise may not be sufficient for the improvement of individualfunctional ability. Participatory ergonomic approaches (PEAs) were developed and implemented in this study. Theobjective of this study was to compare the performance-based results among the PRE-PEA, NWE-PEA, and standardtreatment (STG) groups in aged para-rubber farmers with KOA. The participants performed self-practice for 8 weeksand recorded compliance daily. The primary outcomes that included the timed up and go test (TUG), 40-meter fastpaced walk test (40mFPWT), and stair climb test (SCT) were measured at baseline, 5, and 9 weeks. The resultsshowed that a mean comparison of the 3-paired groups resulted in statistically significant differences in TUG,40mFPWT, and SCT between the PRE-PEA vs. STG and NWE-PEA vs. STG (p<0.001). PEAs with PRE and NWEcould improve functional abilities in both the performance-based and patient-report assessments in aged para rubberfarmers with KOA.