The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury

# Background Limited research exists on the effects of both high and low frequency whole body vibration (WBV) on individuals with subacute lateral ankle sprains. # Hypothesis/Purpose To examine the difference in the effects of high and low frequency WBV on limits of stability (LOS) in adults wi...

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Autores principales:	Sonia Young, Harvey W. Wallmann, Kailey L. Quiambao, Brooke M. Grimes
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/ba7b761070164e7aad94f6cb976dacb9
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spelling	oai:doaj.org-article:ba7b761070164e7aad94f6cb976dacb92021-12-02T17:42:30ZThe Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury10.26603/001c.242502159-2896https://doaj.org/article/ba7b761070164e7aad94f6cb976dacb92021-06-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/24250-the-effects-of-whole-body-vibration-on-the-limits-of-stability-in-adults-with-subacute-ankle-injury.pdfhttps://doaj.org/toc/2159-2896# Background Limited research exists on the effects of both high and low frequency whole body vibration (WBV) on individuals with subacute lateral ankle sprains. # Hypothesis/Purpose To examine the difference in the effects of high and low frequency WBV on limits of stability (LOS) in adults with a subacute ankle sprain. It was hypothesized that WBV would improve effects on outcome variables for LOS as a component of dynamic balance. # Study Design Quasi-experimental, pretest-posttest design. # Methods Fifteen participants ages 19-27 years (Mean age 22±2.36) with either a Grade I or Grade II lateral ankle sprain received WBV in bilateral stance under three randomized conditions (high frequency-25 Hz, low frequency-6 Hz, and control, which consisted of bilateral stance with machine off) for six minutes over three sessions (one time per week). The LOS test, consisting of 5 variables, were assessed using the NeuroCom® Balance Manager-SMART EquiTest® (Natus Medical Incorporated, Pleasanton, CA) at baseline and after the intervention period. The participants completed a practice LOS test and then had a six-minute standing rest break. After the rest break, they completed the pre-LOS (baseline) test. Intervention was administered using the Galileo® Med L Chip Research (Novotec Medical GmbH, Pforzheim, Germany) for six minutes for the appropriate condition of either high or low frequency WBV or control. Data analysis was performed using 2-Way (2x3) Repeated Measures ANOVAs with additional post hoc testing as needed. # Results Significant interactions were found for reaction time (RT), movement velocity (MVL), and maximal excursion (MXE) composite scores with a decrease in RT of 0.117 seconds (p=0.022) between control and high frequency conditions during the post LOS. For composite MVL, an increase of 0.547 degrees/second (p=0.002) between pre- and post-high frequency WBV occurred. For composite MXE, an increase of 2.13% p=0.031 (when comparing pre- and post-high frequency WBV. # Conclusion Findings suggest that a single session of high frequency WBV in individuals with a subacute lateral ankle sprain may result in improvement in several components of postural stability. WBV is a quick intervention that could be implemented in physical therapy clinics, athletic training rooms, and workout facilities to improve an individual's LOS as a component of dynamic balance one to eight weeks post lateral ankle sprain. # Level of Evidence 2bSonia YoungHarvey W. WallmannKailey L. QuiambaoBrooke M. GrimesNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Sonia Young Harvey W. Wallmann Kailey L. Quiambao Brooke M. Grimes The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
description	# Background Limited research exists on the effects of both high and low frequency whole body vibration (WBV) on individuals with subacute lateral ankle sprains. # Hypothesis/Purpose To examine the difference in the effects of high and low frequency WBV on limits of stability (LOS) in adults with a subacute ankle sprain. It was hypothesized that WBV would improve effects on outcome variables for LOS as a component of dynamic balance. # Study Design Quasi-experimental, pretest-posttest design. # Methods Fifteen participants ages 19-27 years (Mean age 22±2.36) with either a Grade I or Grade II lateral ankle sprain received WBV in bilateral stance under three randomized conditions (high frequency-25 Hz, low frequency-6 Hz, and control, which consisted of bilateral stance with machine off) for six minutes over three sessions (one time per week). The LOS test, consisting of 5 variables, were assessed using the NeuroCom® Balance Manager-SMART EquiTest® (Natus Medical Incorporated, Pleasanton, CA) at baseline and after the intervention period. The participants completed a practice LOS test and then had a six-minute standing rest break. After the rest break, they completed the pre-LOS (baseline) test. Intervention was administered using the Galileo® Med L Chip Research (Novotec Medical GmbH, Pforzheim, Germany) for six minutes for the appropriate condition of either high or low frequency WBV or control. Data analysis was performed using 2-Way (2x3) Repeated Measures ANOVAs with additional post hoc testing as needed. # Results Significant interactions were found for reaction time (RT), movement velocity (MVL), and maximal excursion (MXE) composite scores with a decrease in RT of 0.117 seconds (p=0.022) between control and high frequency conditions during the post LOS. For composite MVL, an increase of 0.547 degrees/second (p=0.002) between pre- and post-high frequency WBV occurred. For composite MXE, an increase of 2.13% p=0.031 (when comparing pre- and post-high frequency WBV. # Conclusion Findings suggest that a single session of high frequency WBV in individuals with a subacute lateral ankle sprain may result in improvement in several components of postural stability. WBV is a quick intervention that could be implemented in physical therapy clinics, athletic training rooms, and workout facilities to improve an individual's LOS as a component of dynamic balance one to eight weeks post lateral ankle sprain. # Level of Evidence 2b
format	article
author	Sonia Young Harvey W. Wallmann Kailey L. Quiambao Brooke M. Grimes
author_facet	Sonia Young Harvey W. Wallmann Kailey L. Quiambao Brooke M. Grimes
author_sort	Sonia Young
title	The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
title_short	The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
title_full	The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
title_fullStr	The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
title_full_unstemmed	The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury
title_sort	effects of whole body vibration on the limits of stability in adults with subacute ankle injury
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/ba7b761070164e7aad94f6cb976dacb9
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The Effects of Whole Body Vibration on the Limits of Stability in Adults With Subacute Ankle Injury

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