Abstract
The purpose of this study was to assess the effect of whole body vibration (WBV) exercise
on muscle strength and proprioception in female patients with osteoarthritis in the
knee (knee-OA). A single blinded, randomised, controlled trial was performed in an
outpatient clinic on 52 female patients diagnosed with knee-OA (mean age 60.4 years±9.6). They were randomly assigned to one of 3 groups: 1. WBV-exercise on a stable
platform (VibM; n=17 (mean age, 61.5±9.2)), WBV-exercise on a balance board (VibF; n=18 (mean age, 58.7±11.0)), or control group (Con; n=18 (mean age, 61.1±8.5)).
The WBV groups trained twice a week for 8 weeks, with a progressively increasing intensity.
The WBV groups performed unloaded static WBV exercise.
The following were measured: knee muscle strength (extension/flexion) and proprioception
(threshold for detection of passive movement (TDPM)). Self-reported disease status
was measured using WOMAC.
It was found that muscle strength increased significantly (p<0.001) in VibM compared to Con. Isometric knee-extension significantly increased (p=0.021) in VibM compared to Con. TDPM was significantly improved (p=0.033) in VibF compared to Con, while there was a tendency (p=0.051) for VibM to perform better compared to Con. There were no effects in the self-reported
disease status measures.
This study showed that the WBV-exercise regime on a stable platform (VibM) yielded
increased muscle strength, while the WBV-exercise on a balance board (VibF) showed
improved TDPM. The WBV-exercise is a time-saving and safe method for rehabilitation
of women with knee-OA.
Keywords
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Article info
Publication history
Published online: January 16, 2009
Accepted:
November 19,
2008
Received in revised form:
November 18,
2008
Received:
June 25,
2008
Identification
Copyright
© 2008 Elsevier B.V. Published by Elsevier Inc. All rights reserved.
