Immediate Effects of Local Vibration and Whole-body Vibration on Postural Control in Patients with Ataxia: an Assessor-B
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ORIGINAL ARTICLE
Immediate Effects of Local Vibration and Whole-body Vibration on Postural Control in Patients with Ataxia: an Assessor-Blind, Cross-over randomized trial Güngör Beyza Özvar 1
&
Ender Ayvat 1
&
Muhammed Kılınç 1
Accepted: 27 August 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Vibration interventions are used in neurorehabilitation to improve postural control in recent years. Little is known about the immediate effects of vibration interventions on postural control in patients with ataxia. The aim of this study is to investigate and compare the immediate effects of local vibration (LV) and whole-body vibration (WBV) on postural control in patients with ataxia. This study was designed as cross-over, single blind randomized clinical trial. Twenty-one patients with ataxia met the inclusion criteria. LV (frequency, 80 Hz; amplitude, 1 mm) and WBV (30 Hz, 2 mm) were applied to all patients. There was a 1week washout time between interventions. Each patient was assessed 3 times: pre-intervention and 1 and 60 min post-intervention. The assessor was blinded to the interventions. Outcome measures were limits of stability (LoS), and postural sways (Bertec Balance Check Screener), gait parameters (GAITRite), and static balance (one-leg stance test). Twenty patients completed both interventions. The mean patient age was 39.43 ± 9.67 years. LV increased the left-LoS post-vibration (1 and 60 min post) more than WBV did (p ˂ 0.05). LV increased the LoS stability score and the base of support at 1 min post-vibration, while WBV decreased them (p ˂ 0.05). This study demonstrated different immediate effects of a single session of LV versus WBV and showed that LV has better effects on postural control in patients with ataxia. ClinicalTrials.gov. nr NCT04183647 Keywords Local vibration . Whole-body vibration . Postural control . Ataxia
Introduction The effects of vibration interventions, including local vibration (LV) and whole-body vibration (WBV), on neurological diseases have been frequently investigated in recent years. Both interventions are used in neurorehabilitation to regulate
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12311-020-01187-7) contains supplementary material, which is available to authorized users. * Güngör Beyza Özvar [email protected] Ender Ayvat [email protected] Muhammed Kılınç [email protected] 1
Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
muscle tone, increase neuromuscular performance, and improve balance, mobility [1]. Vibration increases the sensorial stimulation of sole afferents and stimulates postural responses [2]. Vibration interventions increase motor unit synchronization, coordination between agonist and antagonist muscle groups [3]. These interventions create muscle tension to activate the tonic vibration reflex by activating the afferents of groups Ia and II to increase proprioception [4]. Vibration interventions are an effective
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