Show simple item record

dc.contributor.authorLiao, Lin-Rongen_US
dc.contributor.authorM.H. Lam, Freddyen_US
dc.contributor.authorY.C. Pang, Marcoen_US
dc.contributor.authorJones, Aliceen_US
dc.contributor.authorY.F. Ng, Gabrielen_US
dc.date.accessioned2017-05-03T12:02:30Z
dc.date.available2017-05-03T12:02:30Z
dc.date.issued2013en_US
dc.date.modified2014-06-12T23:42:53Z
dc.identifier.issn01959131en_US
dc.identifier.doi10.1249/MSS.0b013e3182a6a006en_US
dc.identifier.urihttp://hdl.handle.net/10072/60125
dc.description.abstractPURPOSE: It has been previously shown that whole-body vibration (WBV) can augment muscle activity in young healthy adults. However, the EMG response of leg muscles during WBV in individuals with stroke is unknown. The objective of this study was to determine the influence of WBV on the activity of the vastus lateralis (VL) and gastrocnemius (GS) muscles during the performance of different exercises in chronic stroke patients. METHODS: Forty-five chronic stroke patients were studied. Each subject was exposed to three WBV conditions of 1) no WBV, 2) low-intensity WBV protocol (peak acceleration: 0.96 unit of gravitational constant [g]), and 3) high-intensity WBV protocol (peak acceleration: 1.61g) while performing eight different static exercises involving upright standing, semisquat, deep squat, weight shifted forward, weight shifted backward, weight shifted to the side, forward lunge, and single-leg standing. Bilateral VL and GS muscle activity was recorded with surface EMG and expressed as a percentage of the EMG amplitude recorded during a maximal voluntary contraction of the respective muscles. RESULTS: Two-way repeated-measures ANOVA revealed that exposure to WBV (low- and high-intensity protocols) significantly increased VL and GS EMG amplitude (large effect size, partial ? = 0.135-0.643, P < 0.001) on both the paretic and nonparetic sides in different exercise conditions compared with no WBV. No significant difference in EMG magnitude was found between the high- and the low-intensity WBV protocols (P > 0.05). With a few exceptions, WBV enhanced EMG activity in the paretic and nonparetic leg muscles to a similar extent in different exercise conditions. CONCLUSIONS: Leg muscle activity was increased significantly with the addition of WBV. Further clinical trials are needed to determine the effectiveness of different WBV protocols for strengthening leg muscles in chronic stroke patients.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.languageEnglishen_US
dc.publisherLippincott Williams & Wilkinsen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom537en_US
dc.relation.ispartofpageto545en_US
dc.relation.ispartofissue3en_US
dc.relation.ispartofjournalMedicine and Science in Sports and Exerciseen_US
dc.relation.ispartofvolume46en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchPhysiotherapyen_US
dc.subject.fieldofresearchcode110317en_US
dc.titleLeg Muscle Activity during Whole-Body Vibration in Individuals with Chronic Strokeen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.hasfulltextNo Full Text


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record