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    Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling

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    Author
    Mohler, Jane
    Toosizadeh, Nima
    Marlinski, Vladimir
    Affiliation
    Univ Arizona, Dept Med
    Univ Arizona, Dept Biomed Engn
    Issue Date
    2018-03
    
    Metadata
    Show full item record
    Publisher
    Public Library of Science (PLOS)
    Citation
    Toosizadeh N, Mohler J, Marlinski V (2018) Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling. PLoS ONE 13(3): e0194720. https://doi.org/10.1371/journal.pone.0194720
    Journal
    PlosIbe
    Rights
    © 2018 Toosizadeh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    In our study we examined postural performance of young healthy persons (HY), elderly healthy persons (HE), and elderly persons at high risk of falling (FR). Anterio-posterior (AP) and medio-lateral (ML) ankle and hip angular deviations, as well as linear displacements of the center of mass (COM) were assessed in persons standing with eyes either open or closed, while none, and 40 and 30 Hz vibrations were applied bilaterally to the ankle muscle gastrocnemius. During quiet standing with eyes open, balance parameters in FR group differed from those in healthy groups. ML ankle and hip angular deviations, as well as COM linear displacements were noticeably larger in FR group. During quiet standing with eyes closed, all balance parameters in participants of all groups had a clear trend to increase. During standing with eyes open, 40 Hz vibration increased all but one balance parameter within HY group, ankle angular deviations in HE group, but none in FR group. In response to 30 Hz vibration, only ankle angular deviations and COM linear displacements increased in HY group. There were no changes in both elderly groups. During standing with eyes closed, 40 and 30 Hz vibrations did not produce consistent changes in balance parameters in HY and HE groups. In FR persons, 40 Hz vibration did not change balance parameters. However, in FR groups, 30 Hz vibration decreased ankle and hip angular deviations, and COM linear displacements. The major result of the study is a finding that low intensity vibration of ankle muscles makes balance better in elderly persons at high risk of falling. This result is clinically relevant because it suggests that applying mild vibration to ankle muscles while standing and walking might benefit elderly persons, improving their postural performance and reducing a risk of unexpected falls.
    Note
    Open Access Article. UA Open Access Publishing Fund.
    ISSN
    1932-6203
    PubMed ID
    29579098
    DOI
    10.1371/journal.pone.0194720
    Version
    Final published version
    Additional Links
    http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0194720
    ae974a485f413a2113503eed53cd6c53
    10.1371/journal.pone.0194720
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