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The effects of acute bouts of whole body vibration on central hemodynamics in frail older adults: a pilot study
Abdolhosseini P, Lark S, Wadsworth D, Stoner L
Physical & Occupational Therapy in Geriatrics 2019;37(4):223-233
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

INTRODUCTION: This study investigates whether an acute bout of whole body vibration (WBV): (i) improves measures of central hemodynamics and (ii) can be completed without inducing orthostatic intolerance in frail older adults. METHODS: Nine rest home residents participated in a cross-over design incorporating WBV and non-vibrational control conditions (CON) on 2 separate testing days. The order of the two testing conditions was randomized. Participants completed 10 sets of 60 seconds of WBV training or CON with an inter-set rest period of 60 seconds. RESULTS: During training, no interaction or between-condition effects were observed for any variable. Following training, there was an interaction effect reported for augmentation index (AIx) (p < 0.019) and a significant large increase in AIx for WBV (p = 0.020, eta = 0.202). Three participants exhibited one-off notable decreases in either central systolic or diastolic blood pressure. CONCLUSION: An acute bout of WBV is a safe training method for frail older adults.
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