Effects of old age on fatigability and sensorimotor characteristics of a repetitive upper limb fatiguing task

1) Determine the effects of old age on sensorimotor responses to a fatiguing work-like task. 2) Explore how old age influences the relationships between task fatigability, everyday perceptions of fatigability, and sensorimotor function. Healthy young (N = 17, 9W) and older (N = 13, 10W) adults compl...

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Veröffentlicht in:PloS one 2020-07, Vol.15 (7), p.e0235314-e0235314
Hauptverfasser: Bailey, Christopher A, Weiss, Maxana, Côté, Julie N
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description 1) Determine the effects of old age on sensorimotor responses to a fatiguing work-like task. 2) Explore how old age influences the relationships between task fatigability, everyday perceptions of fatigability, and sensorimotor function. Healthy young (N = 17, 9W) and older (N = 13, 10W) adults completed the Pittsburgh Fatigability Scale to assess everyday perceptions of physical (PF) and mental fatigability and performed a repetitive tapping task to fatigue. Before and after the task, grip strength was assessed using a hand-grip dynamometer and touch-pressure sensitivity was measured (shoulder, hand) using Semmes-Weinstein monofilaments. Older, but not young adults, had increased touch-pressure sensitivity at the shoulder after fatigue (interaction, p = 0.007). No changes in grip strength were observed (p>0.05). Task fatigability was not different between young and old adults (p>0.05). Having less task fatigability was associated with lower PF, higher grip strength, and higher touch-pressure sensitivity at the hand ([rho] = 0.37-0.58, p
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Healthy young (N = 17, 9W) and older (N = 13, 10W) adults completed the Pittsburgh Fatigability Scale to assess everyday perceptions of physical (PF) and mental fatigability and performed a repetitive tapping task to fatigue. Before and after the task, grip strength was assessed using a hand-grip dynamometer and touch-pressure sensitivity was measured (shoulder, hand) using Semmes-Weinstein monofilaments. Older, but not young adults, had increased touch-pressure sensitivity at the shoulder after fatigue (interaction, p = 0.007). No changes in grip strength were observed (p&gt;0.05). Task fatigability was not different between young and old adults (p&gt;0.05). Having less task fatigability was associated with lower PF, higher grip strength, and higher touch-pressure sensitivity at the hand ([rho] = 0.37-0.58, p&lt;0.05), with the hand sensation association also observed in the old adult subgroup ([rho] = 0.56, p = 0.046). With old age, there were fatigue-related alterations to sensory but not physical function. 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Healthy young (N = 17, 9W) and older (N = 13, 10W) adults completed the Pittsburgh Fatigability Scale to assess everyday perceptions of physical (PF) and mental fatigability and performed a repetitive tapping task to fatigue. Before and after the task, grip strength was assessed using a hand-grip dynamometer and touch-pressure sensitivity was measured (shoulder, hand) using Semmes-Weinstein monofilaments. Older, but not young adults, had increased touch-pressure sensitivity at the shoulder after fatigue (interaction, p = 0.007). No changes in grip strength were observed (p&gt;0.05). Task fatigability was not different between young and old adults (p&gt;0.05). Having less task fatigability was associated with lower PF, higher grip strength, and higher touch-pressure sensitivity at the hand ([rho] = 0.37-0.58, p&lt;0.05), with the hand sensation association also observed in the old adult subgroup ([rho] = 0.56, p = 0.046). With old age, there were fatigue-related alterations to sensory but not physical function. While task fatigability was associated with perceptual, physical, and sensory features, sensory features appear to have a more important role with old age.</abstract><cop>San Francisco</cop><pub>Public Library of Science</pub><pmid>32645051</pmid><doi>10.1371/journal.pone.0235314</doi><tpages>e0235314</tpages><orcidid>https://orcid.org/0000-0003-3743-5297</orcidid><orcidid>https://orcid.org/0000-0002-4844-0561</orcidid><oa>free_for_read</oa></addata></record>
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subjects Adults
Age
Aging
Biology and Life Sciences
Elderly
Extremities (Anatomy)
Fatigue
Grip strength
Hand tools
Interdisciplinary aspects
Kinesiology
Medicine and Health Sciences
Older people
Pain
People and Places
Perceptions
Physical education
Physical Sciences
Physiological aspects
Pressure
Rehabilitation
Sensorimotor system
Shoulder
Shoulders
Social Sciences
Subgroups
Touch
Young adults
title Effects of old age on fatigability and sensorimotor characteristics of a repetitive upper limb fatiguing task
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