title: The effect of adding whole body vibration training to strengthening training in the treatment of knee osteoarthritis: A randomized clinical trial.
abstract: Strengthening training (ST) and whole body vibration training (WBV) alone may improve symptoms of osteoarthritis of the knee. In this study, we investigated the effect of adding WBV training to quadriceps and hamstring muscles strengthening training on functional activity, pain, quality of life and muscle strength in patients with knee osteoarthritis. 28 volunteers were randomly allocated to two groups; 1) quadriceps and hamstring muscles strengthening training (ST group, 13 patients) and 2) quadriceps and hamstring muscles strengthening training along with WBV training (ST + WBV group, 15 patients). The treatment protocol for both groups involved 3 sessions per week for 8 weeks. All measurements were performed before and after intervention. The measurements included: pain by means of a visual analogue scale (VAS), quality of life by means of the WOMAC scale, functional activity by the 2 min walking test (2MWT), time up & go test (TUGT) and 50-foot walking test (50FWT) and the muscle peak torque (MPT), total work (TW) and muscle power (MP) as muscle performance of quadriceps and hamstring muscles by an Isokinetic Biodex machine. After intervention, the comparison of mean changes between two groups showed improvement in the WBV + ST group in terms of 2MWT, MPT, TW and MP variables (P < 0.05). However, no significant difference was found between the experimental groups in term of pain, quality of life, TUGT and 50FWT. These results suggest that adding whole body vibration training to strengthening training may provide better treatment effects for patients with knee osteoarthritis.
authors.affiliation: Neuromuscular Rehabilitation Research Centre, Semnan University of Medical Sciences, Semnan, Iran. Electronic address: hamid_boka67@yahoo.com.
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Bokaeian
authors.affiliation: Neuromuscular Rehabilitation Research Centre, Semnan University of Medical Sciences, Semnan, Iran. Electronic address: amirbakhtiary@semums.ac.ir.
authors.forename: Amir Hoshang
authors.initials: AH
authors.lastname: Bakhtiary
authors.affiliation: Center for Social Determinants of Health, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran. Electronic address: majidmirmohammadkhani@yahoo.com.
authors.forename: Majid
authors.initials: M
authors.lastname: Mirmohammadkhani
authors.affiliation: Internal Medicine Group, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran. Electronic address: Jamile_moghimi@yahoo.com.
authors.forename: Jamile
authors.initials: J
authors.lastname: Moghimi
mesh_terms: D000328:Adult; D000368:Aged; D005081:Exercise Therapy / Q000379:methods; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D020370:Osteoarthritis, Knee / Q000534:rehabilitation*; D026741:Physical Therapy Modalities; D052097:Quadriceps Muscle / Q000502:physiology; D011788:Quality of Life; D016059:Range of Motion, Articular; D019415:Torque; D014732:Vibration / Q000627:therapeutic use*
keywords: Functional activity; IRCT2012060665152N2; Knee osteoarthritis; Muscle performance; Strengthening exercises; WBV training