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The impact of aging and reaching movements on grip stability control during manual precision tasks
BACKGROUND: Operating an object by generating stable hand-grip force during static or dynamic posture control of the upper extremities simultaneously is an important daily activity. Older adults require different attentional resources during grip strength control and arm movements. However, the impa...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8672550/ https://www.ncbi.nlm.nih.gov/pubmed/34911487 http://dx.doi.org/10.1186/s12877-021-02663-3 |
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author | Lin, Bor-Shing Kuo, Shu-Fen Lee, I-Jung Lu, Liang-Hsuan Chen, Po-Yin Wang, Pin-Chun Lai, Chien-Hung Wang, Xin-Miao Lin, Chueh-Ho |
author_facet | Lin, Bor-Shing Kuo, Shu-Fen Lee, I-Jung Lu, Liang-Hsuan Chen, Po-Yin Wang, Pin-Chun Lai, Chien-Hung Wang, Xin-Miao Lin, Chueh-Ho |
author_sort | Lin, Bor-Shing |
collection | PubMed |
description | BACKGROUND: Operating an object by generating stable hand-grip force during static or dynamic posture control of the upper extremities simultaneously is an important daily activity. Older adults require different attentional resources during grip strength control and arm movements. However, the impact of aging and reaching movements on precise grip strength and stability control among older adults is not well understood. This study investigated the impact of aging and reaching movements on grip strength and stability control in both hands of the upper extremities. METHODS: Fifty healthy young adults (age: 28.8 ± 14.0 years) and 54 healthy older adults (73.6 ± 6.3 years) were recruited to perform isometric grip strength test at 20% maximal voluntary contraction as the target force during three manual precision tasks simultaneously: stationary task (without arm movements), forward-reach task, and backward-reach task. The average grip force (in kg) and coefficient of variation values (expressed as a percentage) during manual precision tasks were calculated to determine the quality of participants’ grip strength. The deviation error, absolute error, and force-stability index values were calculated to determine the strength control relative to the target force. RESULTS: For both the young and older groups, the force-stability index values in both hands were significantly higher during forward- and backward-reaching movements than in the stationary condition (p < 0.05). The older group exhibited a significantly lower hand-grip strength and stability of strength control in both hands than the young group (p < 0.05). CONCLUSIONS: Aging and reaching task performance reduced the grip strength of participants and increased the variations in strength control of both hands relative to the target force, indicating that older adults exhibit poor grip strength and stability control when performing arm-reaching movements. These findings may help clinical therapists in establishing objective indexes for poor grip-stability control screening and developing appropriate rehabilitation programs or health-promotion exercises that can improve grip strength and stability control in older people. |
format | Online Article Text |
id | pubmed-8672550 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-86725502021-12-15 The impact of aging and reaching movements on grip stability control during manual precision tasks Lin, Bor-Shing Kuo, Shu-Fen Lee, I-Jung Lu, Liang-Hsuan Chen, Po-Yin Wang, Pin-Chun Lai, Chien-Hung Wang, Xin-Miao Lin, Chueh-Ho BMC Geriatr Research BACKGROUND: Operating an object by generating stable hand-grip force during static or dynamic posture control of the upper extremities simultaneously is an important daily activity. Older adults require different attentional resources during grip strength control and arm movements. However, the impact of aging and reaching movements on precise grip strength and stability control among older adults is not well understood. This study investigated the impact of aging and reaching movements on grip strength and stability control in both hands of the upper extremities. METHODS: Fifty healthy young adults (age: 28.8 ± 14.0 years) and 54 healthy older adults (73.6 ± 6.3 years) were recruited to perform isometric grip strength test at 20% maximal voluntary contraction as the target force during three manual precision tasks simultaneously: stationary task (without arm movements), forward-reach task, and backward-reach task. The average grip force (in kg) and coefficient of variation values (expressed as a percentage) during manual precision tasks were calculated to determine the quality of participants’ grip strength. The deviation error, absolute error, and force-stability index values were calculated to determine the strength control relative to the target force. RESULTS: For both the young and older groups, the force-stability index values in both hands were significantly higher during forward- and backward-reaching movements than in the stationary condition (p < 0.05). The older group exhibited a significantly lower hand-grip strength and stability of strength control in both hands than the young group (p < 0.05). CONCLUSIONS: Aging and reaching task performance reduced the grip strength of participants and increased the variations in strength control of both hands relative to the target force, indicating that older adults exhibit poor grip strength and stability control when performing arm-reaching movements. These findings may help clinical therapists in establishing objective indexes for poor grip-stability control screening and developing appropriate rehabilitation programs or health-promotion exercises that can improve grip strength and stability control in older people. BioMed Central 2021-12-15 /pmc/articles/PMC8672550/ /pubmed/34911487 http://dx.doi.org/10.1186/s12877-021-02663-3 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Lin, Bor-Shing Kuo, Shu-Fen Lee, I-Jung Lu, Liang-Hsuan Chen, Po-Yin Wang, Pin-Chun Lai, Chien-Hung Wang, Xin-Miao Lin, Chueh-Ho The impact of aging and reaching movements on grip stability control during manual precision tasks |
title | The impact of aging and reaching movements on grip stability control during manual precision tasks |
title_full | The impact of aging and reaching movements on grip stability control during manual precision tasks |
title_fullStr | The impact of aging and reaching movements on grip stability control during manual precision tasks |
title_full_unstemmed | The impact of aging and reaching movements on grip stability control during manual precision tasks |
title_short | The impact of aging and reaching movements on grip stability control during manual precision tasks |
title_sort | impact of aging and reaching movements on grip stability control during manual precision tasks |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8672550/ https://www.ncbi.nlm.nih.gov/pubmed/34911487 http://dx.doi.org/10.1186/s12877-021-02663-3 |
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