The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Effect of aging on human muscle architecture
Abstract
The effect of aging on human gastrocnemius medialis (GM) muscle architecture was evaluated by comparing morphometric measurements on 14 young (aged 27–42 yr) and on 16 older (aged 70–81 yr) physically active men, matched for height, body mass, and physical activity. GM muscle anatomic cross-sectional area (ACSA) and volume (Vol) were measured by computerized tomography, and GM fascicle length ( L f) and pennation angle (θ) were assessed by ultrasonography. GM physiological cross-sectional area (PCSA) was calculated as the ratio of Vol/ L f. In the elderly, ACSA and Vol were, respectively, 19.1% ( P < 0.005) and 25.4% ( P < 0.001) smaller than in the young adults. Also, L f and θ were found to be smaller in the elderly group by 10.2% ( P < 0.01) and 13.2% ( P < 0.01), respectively. When the data for the young and elderly adults were pooled together, θ significantly correlated with ACSA ( P < 0.05). Because of the reduced Vol and L f in the elderly group, the resulting PCSA was found to be 15.2% ( P < 0.05) smaller. In conclusion, this study demonstrates that aging significantly affects human skeletal muscle architecture. These structural alterations are expected to have implications for muscle function in old age.
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Cites
Skeletal muscle mass and distribution in 468 men and women aged 18–88 yr
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Motor unit firing rates and contractile properties in tibialis anterior of young and old men
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Decline in isokinetic force with age: muscle cross-sectional area and specific force
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Cited by
Mitchell, W. K., Williams, J., Atherton, P., Larvin, M., Lund, J., & Narici, M. (2012) · Frontiers in Physiology · doi:10.3389/fphys.2012.00260 · Cited by 1,377
Self-citationFragala, M. S., Cadore, E. L., Dorgo, S., Izquierdo, M., Kraemer, W. J., Peterson, M. D., & Ryan, E. D. (2019) · Journal of Strength and Conditioning Research · doi:10.1519/jsc.0000000000003230 · Cited by 1,290
Sarcopenia with limited mobility: an international consensus
Morley, J. E., Abbatecola, A. M., Argiles, J. M., Baracos, V., Bauer, J., Bhasin, S., Cederholm, T., Stewart Coats, A. J., Cummings, S. R., Evans, W. J., et al. (2011) · Journal of the American Medical Directors Association · doi:10.1016/j.jamda.2011.04.014 · Cited by 1,125
Sarcopenia: characteristics, mechanisms and functional significance
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Self-citationLive strong and prosper: the importance of skeletal muscle strength for healthy ageing
McLeod, M., Breen, L., Hamilton, D. L., & Philp, A. (2016) · Biogerontology · doi:10.1007/s10522-015-9631-7 · Cited by 274
Metadata
- Authors
- Narici, M. V., Maganaris, C. N., Reeves, N. D., & Capodaglio, P.
- Venue
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Published
- 2003-12
- Volume
- 95
- Issue
- 6
- Pages
- 2229-2234
- ISSN
- 0161-7567 (ISSN-L)
- 8750-7587
- 1522-1601
- OpenAlex
- W2059938268
- Cited by
- 543
- References
- 4
- FWCI
- 7.42
- Type
- journal article
- Language
- en
- Open access
- closed
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