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Small, movement dependent perturbations substantially alter postural control strategy in healthy young adultsGorjan, Daša, 1994- ...Postural control is commonly investigated by observing responses to perturbations. We developed a perturbation paradigm mimicking self-generated errors in weight shifting, which are a common cause of ... falling among older adults. Our aim was to determine the effects of this small, but complex, perturbation on postural sway of healthy young adults and evaluate the role of vision and cognition during movement dependent perturbations. Fifteen participants stood hip-width apart with their eyes open, closed and while performing two different cognitive tasks. Participants were continuously perturbed by medial-lateral (ML) support surface translations corresponding to, and hence doubling, their own center of mass sway. We analyzed the standard deviation (SD), root mean square (RMS), range, and mean power frequency (MPF) of center of pressure displacements. ML postural sway increased due to the perturbation (SD p % .001, range p < .001, RMS p % .001, MPF p < .001). Cognitive load increased the ML sway range (p = .048). Lack of vision increased ML MPF (p = .001) and anterior-posterior (AP) range (p < .001), SD (p < .001), and RMS (p = .001). Significant interaction of vision with the perturbation was found for the ML range (p = .045) and AP SD (p = .018). The perturbation specifically affected ML postural sway. Increased MPF is indicative of a postural control strategy change, which was insufficient for fully controlling the increased sway. Despite being small, this type of perturbation appears to be challenging for young adults.Source: Journal of biomechanics. - ISSN 0021-9290 (Vol. 91, 2019, str. 1-6)Type of material - article, component part ; adult, seriousPublish date - 2019Language - englishCOBISS.SI-ID - 1540644036
Author
Gorjan, Daša, 1994- |
Babič, Jan |
Šarabon, Nejc |
Potočanac, Zrinka
Topics
postural control |
perturbations |
balance |
dual tasking |
vision |
posturalno nihanje |
ravnotežje |
kognitivni pogoji
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Gorjan, Daša, 1994- | 50855 |
Babič, Jan | 20216 |
Šarabon, Nejc | 21495 |
Potočanac, Zrinka | 38102 |
Source: Personal bibliographies
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