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 |
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Sprache: | eng |
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Zusammenfassung: | 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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ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0235314 |