Proprioceptive impairments in high fall risk older adults: the effect of mechanical calf vibration on postural balance
AffiliationUniv Arizona, Coll Med, Dept Med, Arizona Ctr Aging ACOA
Univ Arizona, Div Geriatr Gen Internal Med & Palliat Med, Dept Med
Univ Arizona, Dept Biomed Engn
KeywordsWearable motion sensors
MetadataShow full item record
PublisherBIOMED CENTRAL LTD
CitationToosizadeh, N., Ehsani, H., Miramonte, M., & Mohler, J. (2018). Proprioceptive impairments in high fall risk older adults: the effect of mechanical calf vibration on postural balance. Biomedical engineering online, 17(1), 51.
JournalBIOMEDICAL ENGINEERING ONLINE
Rights© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
Collection InformationThis 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 email@example.com.
AbstractBackground: Impairments in proprioceptive mechanism with aging has been observed and associated with fall risk. The purpose of the current study was to assess proprioceptive deficits among high fall risk individuals in comparison with healthy participants, when postural performance was disturbed using low-frequency mechanical gastrocnemius vibratory stimulation. Methods: Three groups of participants were recruited: healthy young (n = 10; age = 23 +/- 2 years), healthy elders (n = 10; age = 73 +/- 3 years), and high fall risk elders (n = 10; age = 84 +/- 9 years). Eyes-open and eyes-closed upright standing balance performance was measured with no vibration, and 30 and 40 Hz vibration of both calves. Vibration-induced changes in balance behaviors, compared to baseline (no vibratory stimulation) were compared between three groups using multivariable repeated measures analysis of variance models. Results: Overall, similar results were observed for two vibration frequencies. However, changes in body sway due to vibration were more obvious within the eyes-closed condition, and in the medial-lateral direction. Within the eyes-closed condition high fall risk participants showed 83% less vibration-induced change in medial-lateral body sway, and 58% less sway velocity, when compared to healthy participants (p < 0.001; effect size = 0.45-0.64). Conclusions: The observed differences in vibration effects on balance performance may be explained by reduced sensitivity in peripheral nervous system among older adults with impaired balance.
NoteOpen access journal.
UA Open Access Publishing Fund.
VersionFinal published version
SponsorsUniversity of Arizona, Arizona Center on Aging (ACOA)
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