Kim & Lee (2018) — WBV, EEG and Dementia: Study Summary

Plain-English Summary

What researchers wanted to know: Dementia is a progressive neurological condition that impairs memory, cognition, and daily functioning. Senile dementia refers to dementia occurring in older adults (as opposed to presenile dementia occurring before age 65). The researchers wanted to know whether passive whole body vibration exercise — delivered while the participant sits on a vibration platform — could produce measurable changes in brain activity (measured via EEG) and quality of life in elderly women with mild senile dementia.

How they studied it: Eighteen elderly women with mild senile dementia were recruited and randomly assigned to either a WBV intervention group or a control group (9 participants per group). EEG measurements — which record electrical brain wave patterns using sensors on the scalp — were taken to assess brain activation levels. Quality of life was assessed using a validated quality of life instrument. The WBV group received a structured vibration exercise programme over a defined period.

What they found: At the end of the intervention period, the WBV group showed increased EEG brain activation compared to the control group — suggesting that WBV was associated with greater brain engagement. The WBV group also showed improved quality of life scores compared to controls. Researchers concluded that WBV may have a positive effect on brain activation and quality of life in elderly women with senile dementia.

Key limitations: This was a small pilot study with 18 participants total (9 per group) — findings are promising but require replication in larger trials. EEG activation is a proxy measure of brain electrical activity, not a direct measure of dementia severity or progression. The study population was exclusively elderly women with mild dementia — findings may not generalise to men, other dementia types, or more severe dementia. No long-term follow-up was conducted, so the durability of effects is unknown.

What This Means

This study is noteworthy because it specifically examined WBV in people with a dementia diagnosis — one of the few studies to directly target this population. The findings suggest that WBV was associated with increased brain activation (EEG) and improved quality of life in elderly women with mild senile dementia. This is of interest to memory care facility managers, occupational therapists, and families of people with dementia because it suggests a passive intervention — requiring no deliberate cognitive engagement — was associated with measurable brain-level changes.

The key caveat is that this is a small exploratory study. EEG activation improvements do not automatically translate to clinically meaningful cognitive or functional benefits. However, as an early-stage study in a hard-to-reach population, it provides a meaningful contribution to the evidence base.

For a full discussion of this study in the context of the broader WBV and dementia literature, see the WBV and Dementia Research hub page.

Related Topics

• WBV and Dementia Research
• WBV and Cognitive Function Research
• WBV and Nursing Home Elderly Research

Sources

1. Kim JH, Lee SW. (2018). Effects of whole body vibration exercise on EEG activation and quality of life in elderly women with senile dementia. Journal of Exercise Rehabilitation, 14(4):586–591. https://doi.org/10.12965/jer.1836230.115