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KMID : 0361420130370040505
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Journal of Korean Academy of Rehabilitation Medicine
2013 Volume.37 No. 4 p.505 ~ p.515
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Therapeutic Effect of Whole Body Vibration on Chronic Knee Osteoarthritis
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Park Young-Geun
Kwon Bum-Sun
Park Jin-Woo
Cha Dong-Yeon
Nam Ki-Yeun
Sim Kyoung-Bo
Chang Ji-Hea
Lee Ho-Jun
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Abstract
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Objective: To investigate the effect on pain reduction and strengthening of the whole body vibration (WBV) in chronic knee osteoarthritis (OA). Methods: Patients were randomly divided into two groups: the study group (WBV with home based exercise) and control group (home based exercise only). They performed exercise and training for 8 weeks. Eleven patients in each group completed the study. Pain intensity was measured with the Numeric Rating Scale (NRS), functional scales were measured with Korean Western Ontario McMaster score (KWOMAC) and Lysholm Scoring Scale (LSS), quadriceps strength was measured with isokinetic torque and isometric torque and dynamic balance was measured with the Biodex Stability System. These measurements were performed before training, at 1 month after training and at 2 months after training. Results: NRS was significantly decreased in each group, and change of pain intensity was significantly larger in the study group than in the control group after treatment. Functional improvements in KWOMAC and LSS were found in both groups, but no significant differences between the groups after treatment. Dynamic balance, isokinetic strength of right quadriceps and isometric strengths of both quadriceps muscles improved in both groups, but no significant differences between the groups after treatment. Isokinetic strength of left quadriceps did not improve in both groups after treatment. Conclusion: In chronic knee OA patients, WBV reduced pain intensity and increased strength of the right quadriceps and dynamic balance performance. In comparison with the home based exercise program, WBV was superior only in pain reduction and similarly effective in strengthening of the quadriceps muscle and balance improvement.
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KEYWORD
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Knee, Muscle strength, Osteoarthritis, Pain, Vibration
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