The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Motor unit number estimates in the tibialis anterior muscle of young, old, and very old men
Abstract
The rate of motor unit (MU) loss and its influence on the progression of sarcopenia is not well understood. Therefore, the main purpose of this study was to estimate and compare numbers of MUs in the tibialis anterior (TA) of young men (∼25 years) and two groups of older men (∼65 years and ≥80 years). Decomposition‐enhanced spike‐triggered averaging was used to collect surface and intramuscular electromyographic signals during isometric dorsiflexions at 25% of maximum voluntary contraction. The mean surface‐MU potential size was divided into the maximum M wave to calculate the motor unit number estimate (MUNE). The MUNE was significantly reduced in the old (91) compared to young (150) men, and further reduced in the very old men (59). Despite the smaller MUNE at age 65, strength was not reduced until beyond 80 years. This suggests that age‐related MU loss in the TA does not limit function until a critical threshold is reached. Muscle Nerve, 2005
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Citations
Cites
Motor unit firing rates and contractile properties in tibialis anterior of young and old men
Connelly, D. M., Rice, C. L., Roos, M. R., & Vandervoort, A. A. (1999) · Journal of Applied Physiology · doi:10.1152/jappl.1999.87.2.843 · Cited by 340
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Cited by
Dynapenia and aging: an update
Manini, T. M., & Clark, B. C. (2012) · The Journals of Gerontology: Series A · doi:10.1093/gerona/glr010 · Cited by 875
Aagaard, P., Suetta, C., Caserotti, P., Magnusson, S. P., & Kjær, M. (2010) · Scandinavian Journal of Medicine & Science in Sports · doi:10.1111/j.1600-0838.2009.01084.x · Cited by 709
McGregor, R. A., Cameron-Smith, D., & Poppitt, S. D. (2014) · Longevity & Healthspan · doi:10.1186/2046-2395-3-9 · Cited by 532
Cellular and molecular mechanisms underlying age-related skeletal muscle wasting and weakness
Ryall, J. G., Schertzer, J. D., & Lynch, G. S. (2008) · Biogerontology · doi:10.1007/s10522-008-9131-0 · Cited by 423
Klass, M., Baudry, S., & Duchateau, J. (2008) · Journal of Applied Physiology · doi:10.1152/japplphysiol.00550.2007 · Cited by 323
Metadata
- Authors
- McNeil, C. J., Doherty, T. J., Stashuk, D. W., & Rice, C. L.
- Venue
- Muscle & Nerve
- Publisher
- Wiley
- Published
- 2005-01-31
- Volume
- 31
- Issue
- 4
- Pages
- 461-467
- ISSN
- 0148-639X (ISSN-L)
- 1097-4598
- OpenAlex
- W2116382217
- Cited by
- 345
- References
- 1
- FWCI
- 7.47
- Type
- journal article
- Language
- en
- Open access
- closed
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- McNeil, C. J., Doherty, T. J., Stashuk, D. W., & Rice, C. L. (2005). Motor unit number estimates in the tibialis anterior muscle of young, old, and very old men. Muscle & Nerve. https://doi.org/10.1002/mus.20276
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