Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke

Abstract This randomized controlled trial aimed to evaluate the effects of different whole body vibration (WBV) frequencies on concentric and eccentric leg muscle strength, bone turnover and walking endurance after stroke. The study involved eighty-four individuals with chronic stroke (mean age = 59...

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Autores principales:	Zhenhui Yang, Tiev Miller, Zou Xiang, Marco Y. C. Pang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10b96b783ca54ed592718b5566fc2cd2
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spelling	oai:doaj.org-article:10b96b783ca54ed592718b5566fc2cd22021-12-02T15:13:59ZEffects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke10.1038/s41598-020-80526-42045-2322https://doaj.org/article/10b96b783ca54ed592718b5566fc2cd22021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80526-4https://doaj.org/toc/2045-2322Abstract This randomized controlled trial aimed to evaluate the effects of different whole body vibration (WBV) frequencies on concentric and eccentric leg muscle strength, bone turnover and walking endurance after stroke. The study involved eighty-four individuals with chronic stroke (mean age = 59.7 years, SD = 6.5) with mild to moderate motor impairment (Fugl-Meyer Assessment lower limb motor score: mean = 24.0, SD = 3.5) randomly assigned to either a 20 Hz or 30 Hz WBV intervention program. Both programs involved 3 training sessions per week for 8 weeks. Isokinetic knee concentric and eccentric extension strength, serum level of cross-linked N-telopeptides of type I collagen (NTx), and walking endurance (6-min walk test; 6MWT) were assessed at baseline and post-intervention. An intention-to-treat analysis revealed a significant time effect for all muscle strength outcomes and NTx, but not for 6MWT. The time-by-group interaction was only significant for the paretic eccentric knee extensor work, with a medium effect size (0.44; 95% CI: 0.01, 0.87). Both WBV protocols were effective in improving leg muscle strength and reducing bone resorption. Comparatively greater improvement in paretic eccentric leg strength was observed for the 30 Hz protocol.Zhenhui YangTiev MillerZou XiangMarco Y. C. PangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhenhui Yang Tiev Miller Zou Xiang Marco Y. C. Pang Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
description	Abstract This randomized controlled trial aimed to evaluate the effects of different whole body vibration (WBV) frequencies on concentric and eccentric leg muscle strength, bone turnover and walking endurance after stroke. The study involved eighty-four individuals with chronic stroke (mean age = 59.7 years, SD = 6.5) with mild to moderate motor impairment (Fugl-Meyer Assessment lower limb motor score: mean = 24.0, SD = 3.5) randomly assigned to either a 20 Hz or 30 Hz WBV intervention program. Both programs involved 3 training sessions per week for 8 weeks. Isokinetic knee concentric and eccentric extension strength, serum level of cross-linked N-telopeptides of type I collagen (NTx), and walking endurance (6-min walk test; 6MWT) were assessed at baseline and post-intervention. An intention-to-treat analysis revealed a significant time effect for all muscle strength outcomes and NTx, but not for 6MWT. The time-by-group interaction was only significant for the paretic eccentric knee extensor work, with a medium effect size (0.44; 95% CI: 0.01, 0.87). Both WBV protocols were effective in improving leg muscle strength and reducing bone resorption. Comparatively greater improvement in paretic eccentric leg strength was observed for the 30 Hz protocol.
format	article
author	Zhenhui Yang Tiev Miller Zou Xiang Marco Y. C. Pang
author_facet	Zhenhui Yang Tiev Miller Zou Xiang Marco Y. C. Pang
author_sort	Zhenhui Yang
title	Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
title_short	Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
title_full	Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
title_fullStr	Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
title_full_unstemmed	Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
title_sort	effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/10b96b783ca54ed592718b5566fc2cd2
work_keys_str_mv	AT zhenhuiyang effectsofdifferentvibrationfrequenciesonmusclestrengthboneturnoverandwalkingenduranceinchronicstroke AT tievmiller effectsofdifferentvibrationfrequenciesonmusclestrengthboneturnoverandwalkingenduranceinchronicstroke AT zouxiang effectsofdifferentvibrationfrequenciesonmusclestrengthboneturnoverandwalkingenduranceinchronicstroke AT marcoycpang effectsofdifferentvibrationfrequenciesonmusclestrengthboneturnoverandwalkingenduranceinchronicstroke
_version_	1718387553015431168

Effects of different vibration frequencies on muscle strength, bone turnover and walking endurance in chronic stroke

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