The Effect of Whole-Body Vibration on Proprioception and Motor Function for Individuals with Moderate Parkinson Disease: A Single-Blind Randomized Controlled Trial.
Kuan-Yi Li, Yu-Ju Cho, Rou-Shayn Chen
PMID 34992511WHAT IT FOUND
Whole-body vibration did not improve proprioception or outperform conventional therapy in moderate Parkinson's disease.
Both groups showed short-term gains in motor function and balance, suggesting vibration is a viable passive alternative for those unable to engage in active movement.
Key findings
01Whole-body vibration did not significantly improve proprioceptive function in the upper or lower extremities.
02There was no significant difference between whole-body vibration and conventional therapy for motor function or balance outcomes.
03Both treatment groups showed significant short-term improvements in motor scores, functional reach, and Timed Up and Go times.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study had a small sample size and only measured immediate effects after a single session, so it says nothing about long-term benefits. Participants were at a relatively high functional level (normal functional reach scores), which may have masked differences between treatments. Proprioception was measured using psychophysical tasks dependent on patient judgment, which may have been affected by attention or disease symptoms rather than actual sensory change. Three participants dropped out, and the trial was single-blind only (assessor blind), so participants knew their allocation.
Declared interests
None reported in the text.
The easy way to misread this
Do not assume whole-body vibration improves proprioception or balance more than standard therapy. The study found no significant difference between the groups for any outcome, and both groups improved similarly, meaning vibration is not superior to conventional care.