What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?

As we age there are natural physiological deteriorations that decrease the accuracy and flexibility of the postural control system, which increases the risk of falling. Studies have found that there are individual differences in the ability to learn to manage repeated postural threats. The aim of th...

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Autores principales:	Jimmy Falk, Viktor Strandkvist, Irene Vikman, Mascha Pauelsen, Ulrik Röijezon
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	balance postural control surface perturbation older people falls Medicine R
Acceso en línea:	https://doaj.org/article/fcf451d3613e4e398dfcecf267167cbd
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spelling	oai:doaj.org-article:fcf451d3613e4e398dfcecf267167cbd2021-11-25T17:50:54ZWhat Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?10.3390/ijerph1822120691660-46011661-7827https://doaj.org/article/fcf451d3613e4e398dfcecf267167cbd2021-11-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/22/12069https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601As we age there are natural physiological deteriorations that decrease the accuracy and flexibility of the postural control system, which increases the risk of falling. Studies have found that there are individual differences in the ability to learn to manage repeated postural threats. The aim of this study was to investigate which factors explain why some individuals are less proficient at adapting to recurrent postural perturbations. Thirty-five community dwelling older adults performed substantial sensory and motor testing and answered surveys regarding fall-related concerns and cognitive function. They were also subjected to three identical surface perturbations where both kinematics and electromyography was captured. Those that were able to adapt to the third perturbation were assigned to the group “Non-fallers” whereas those that fell during all perturbations were assigned to the group “Fallers”. The group designation dichotomized the sample in a hierarchical orthogonal projection of latent structures— the discriminant analysis model. We found that those who fell were older, had poorer physical performance, poorer strength and longer reaction times. The Fallers’ postural control strategies were more reliant on the stiffening strategy along with a more extended posture and they were less skillful at making appropriate feedforward adaptations prior to the third perturbation.Jimmy FalkViktor StrandkvistIrene VikmanMascha PauelsenUlrik RöijezonMDPI AGarticlebalancepostural controlsurface perturbationolder peoplefallsMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 12069, p 12069 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	balance postural control surface perturbation older people falls Medicine R
spellingShingle	balance postural control surface perturbation older people falls Medicine R Jimmy Falk Viktor Strandkvist Irene Vikman Mascha Pauelsen Ulrik Röijezon What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
description	As we age there are natural physiological deteriorations that decrease the accuracy and flexibility of the postural control system, which increases the risk of falling. Studies have found that there are individual differences in the ability to learn to manage repeated postural threats. The aim of this study was to investigate which factors explain why some individuals are less proficient at adapting to recurrent postural perturbations. Thirty-five community dwelling older adults performed substantial sensory and motor testing and answered surveys regarding fall-related concerns and cognitive function. They were also subjected to three identical surface perturbations where both kinematics and electromyography was captured. Those that were able to adapt to the third perturbation were assigned to the group “Non-fallers” whereas those that fell during all perturbations were assigned to the group “Fallers”. The group designation dichotomized the sample in a hierarchical orthogonal projection of latent structures— the discriminant analysis model. We found that those who fell were older, had poorer physical performance, poorer strength and longer reaction times. The Fallers’ postural control strategies were more reliant on the stiffening strategy along with a more extended posture and they were less skillful at making appropriate feedforward adaptations prior to the third perturbation.
format	article
author	Jimmy Falk Viktor Strandkvist Irene Vikman Mascha Pauelsen Ulrik Röijezon
author_facet	Jimmy Falk Viktor Strandkvist Irene Vikman Mascha Pauelsen Ulrik Röijezon
author_sort	Jimmy Falk
title	What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
title_short	What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
title_full	What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
title_fullStr	What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
title_full_unstemmed	What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?
title_sort	what explains successful or unsuccessful postural adaptations to repeated surface perturbations among older adults?
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fcf451d3613e4e398dfcecf267167cbd
work_keys_str_mv	AT jimmyfalk whatexplainssuccessfulorunsuccessfulposturaladaptationstorepeatedsurfaceperturbationsamongolderadults AT viktorstrandkvist whatexplainssuccessfulorunsuccessfulposturaladaptationstorepeatedsurfaceperturbationsamongolderadults AT irenevikman whatexplainssuccessfulorunsuccessfulposturaladaptationstorepeatedsurfaceperturbationsamongolderadults AT maschapauelsen whatexplainssuccessfulorunsuccessfulposturaladaptationstorepeatedsurfaceperturbationsamongolderadults AT ulrikroijezon whatexplainssuccessfulorunsuccessfulposturaladaptationstorepeatedsurfaceperturbationsamongolderadults
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What Explains Successful or Unsuccessful Postural Adaptations to Repeated Surface Perturbations among Older Adults?

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