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Muscle Performance Changes with Age in Active Women
The purpose of this study was to examine age-related differences in muscle performance in women divided into young (YW, 20–39 years, n = 29) middle-aged (MAW, 40–59 years, n = 33), and older (OW, ≥60 years, n = 40) age groups. Methods: Hand grip strength, vertical jump performance, and knee extensor...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122865/ https://www.ncbi.nlm.nih.gov/pubmed/33922474 http://dx.doi.org/10.3390/ijerph18094477 |
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author | Miller, Ryan M. Freitas, Eduardo D. S. Heishman, Aaron D. Peak, Keldon M. Buchanan, Samuel R. Kellawan, J. Mikhail Pereira, Hugo M. Bemben, Debra A. Bemben, Michael G. |
author_facet | Miller, Ryan M. Freitas, Eduardo D. S. Heishman, Aaron D. Peak, Keldon M. Buchanan, Samuel R. Kellawan, J. Mikhail Pereira, Hugo M. Bemben, Debra A. Bemben, Michael G. |
author_sort | Miller, Ryan M. |
collection | PubMed |
description | The purpose of this study was to examine age-related differences in muscle performance in women divided into young (YW, 20–39 years, n = 29) middle-aged (MAW, 40–59 years, n = 33), and older (OW, ≥60 years, n = 40) age groups. Methods: Hand grip strength, vertical jump performance, and knee extensor (KE) strength (0 deg/s, 60 deg/s, and 240 deg/s), speed of movement (SoM; at 1 Nm, 20%, 40%, and 60% isometric strength), and endurance (30-repetition test at 60 degs/s and 240 deg/s) were assessed. Computed tomography-acquired muscle cross-sectional area (mCSA) was measured and included to determine specific strength (KE strength/mCSA). Results: Hand grip strength was similar across groups, while jump performance declined with age (YW and MAW > OW, p < 0.001). KE strength declined significantly with age (all conditions p < 0.01), while specific strength was similar across groups. SoM was significantly higher for YW and MAW compared to OW (both p < 0.01). An age × velocity interaction revealed YW KE endurance was similar between conditions, whereas MAW and OW displayed significantly better endurance during the 60 deg/s condition. OW displayed impaired KE endurance at 240 deg/s (vs. YW and MAW, p < 0.01) but improved at 60 deg/s (vs. YW, p < 0.01). Dynamic torque decline increased with age (YW < OW, p = 0.03) and was associated with intramuscular adipose tissue (r = 0.21, p = 0.04). Conclusions: Performance declines were most evident among OW, but few performance deficits had emerged in MAW. Interestingly, strength declines disappeared after normalizing to mCSA and endurance appears to be velocity-dependent. |
format | Online Article Text |
id | pubmed-8122865 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-81228652021-05-16 Muscle Performance Changes with Age in Active Women Miller, Ryan M. Freitas, Eduardo D. S. Heishman, Aaron D. Peak, Keldon M. Buchanan, Samuel R. Kellawan, J. Mikhail Pereira, Hugo M. Bemben, Debra A. Bemben, Michael G. Int J Environ Res Public Health Article The purpose of this study was to examine age-related differences in muscle performance in women divided into young (YW, 20–39 years, n = 29) middle-aged (MAW, 40–59 years, n = 33), and older (OW, ≥60 years, n = 40) age groups. Methods: Hand grip strength, vertical jump performance, and knee extensor (KE) strength (0 deg/s, 60 deg/s, and 240 deg/s), speed of movement (SoM; at 1 Nm, 20%, 40%, and 60% isometric strength), and endurance (30-repetition test at 60 degs/s and 240 deg/s) were assessed. Computed tomography-acquired muscle cross-sectional area (mCSA) was measured and included to determine specific strength (KE strength/mCSA). Results: Hand grip strength was similar across groups, while jump performance declined with age (YW and MAW > OW, p < 0.001). KE strength declined significantly with age (all conditions p < 0.01), while specific strength was similar across groups. SoM was significantly higher for YW and MAW compared to OW (both p < 0.01). An age × velocity interaction revealed YW KE endurance was similar between conditions, whereas MAW and OW displayed significantly better endurance during the 60 deg/s condition. OW displayed impaired KE endurance at 240 deg/s (vs. YW and MAW, p < 0.01) but improved at 60 deg/s (vs. YW, p < 0.01). Dynamic torque decline increased with age (YW < OW, p = 0.03) and was associated with intramuscular adipose tissue (r = 0.21, p = 0.04). Conclusions: Performance declines were most evident among OW, but few performance deficits had emerged in MAW. Interestingly, strength declines disappeared after normalizing to mCSA and endurance appears to be velocity-dependent. MDPI 2021-04-23 /pmc/articles/PMC8122865/ /pubmed/33922474 http://dx.doi.org/10.3390/ijerph18094477 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Miller, Ryan M. Freitas, Eduardo D. S. Heishman, Aaron D. Peak, Keldon M. Buchanan, Samuel R. Kellawan, J. Mikhail Pereira, Hugo M. Bemben, Debra A. Bemben, Michael G. Muscle Performance Changes with Age in Active Women |
title | Muscle Performance Changes with Age in Active Women |
title_full | Muscle Performance Changes with Age in Active Women |
title_fullStr | Muscle Performance Changes with Age in Active Women |
title_full_unstemmed | Muscle Performance Changes with Age in Active Women |
title_short | Muscle Performance Changes with Age in Active Women |
title_sort | muscle performance changes with age in active women |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122865/ https://www.ncbi.nlm.nih.gov/pubmed/33922474 http://dx.doi.org/10.3390/ijerph18094477 |
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