The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Skeletal muscle contractile and noncontractile components in young and older women and men
Open accessAbstract
To examine the influences of age, gender, and habitual physical activity level on human skeletal muscle composition, we developed a relatively simple magnetic resonance imaging method for the quantitation of leg anterior compartment contractile and noncontractile content. We studied 23 young (11 women and 12 men, 26–44 yr old) and 21 older (10 women and 11 men, 65–83 yr old) healthy adults. Analysis was by two-factor (age, gender) ANOVA. Physical activity, quantitated by three-dimensional accelerometer worn about the waist for 1 wk, was not different between groups. Men had larger contractile and noncontractile cross-sectional areas (cm 2) than women, with no gender effect on percent noncontractile area. Young subjects had larger contractile areas and smaller absolute (cm 2) and relative (percent total) noncontractile areas than older subjects. There was a significant linear relationship between physical activity and percent noncontractile area in older ( r = −0.68, P = 0.002) but not young subjects. These data demonstrate a more than twofold increase in the noncontractile content of locomotor muscles in older adults and provide novel support for physical activity as a modulator of this age-related change in muscle composition.
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1 retracted
Changes in energy balance and body composition at menopause: a controlled longitudinal study.
Poehlman, E. T., Toth, M. J., & Gardner, A. W. (1995) · Annals of Internal Medicine · doi:10.7326/0003-4819-123-9-199511010-00005 · Cited by 520 · cited 1×
“(24) observed that perimenopausal women who had an accelerated loss of fat-free mass reported reduced physical activity.”
BackgroundRetractedEpidemiology of Sarcopenia among the Elderly in New Mexico
Baumgartner, R. N., Koehler, K. M., Gallagher, D., Romero, L., Heymsfield, S. B., Ross, R. R., Garry, P. J., & Lindeman, R. D. (1998) · American Journal of Epidemiology · doi:10.1093/oxfordjournals.aje.a009520 · Cited by 4,004
Data on the distribution of fibre types in thirty-six human muscles
Johnson, M. A., Polgar, J., Weightman, D., & Appleton, D. (1973) · Journal of the Neurological Sciences · doi:10.1016/0022-510x(73)90023-3 · Cited by 2,200
Mitsiopoulos, N., Baumgartner, R. N., Heymsfield, S. B., Lyons, W., Gallagher, D., & Ross, R. (1998) · Journal of Applied Physiology · doi:10.1152/jappl.1998.85.1.115 · Cited by 1,522
Muscle composition in relation to age and sex
Forsberg, A. M., Nilsson, E., Werneman, J., Bergström, J., & Hultman, E. (1991) · Clinical Science · doi:10.1042/cs0810249 · Cited by 282
Sipila, S., & Suominen, H. (1995) · Journal of Applied Physiology · doi:10.1152/jappl.1995.78.1.334 · Cited by 228
Decline in isokinetic force with age: muscle cross-sectional area and specific force
Jubrias, S. A., Odderson, I. R., Esselman, P. C., & Conley, K. E. (1997) · Pfl�gers Archiv European Journal of Physiology · doi:10.1007/s004240050392 · Cited by 222
Cited by
Invited Review: Aging and sarcopenia
Doherty, T. J. (2003) · Journal of Applied Physiology · doi:10.1152/japplphysiol.00347.2003 · Cited by 1,764
Sarcopenia: its assessment, etiology, pathogenesis, consequences and future perspectives
Rolland, Y., Czerwinski, S., van Kan, G. A., Morley, J. E., Cesari, M., Onder, G., Woo, J., Baumgartner, R., Pillard, F., Boirie, Y., et al. (2008) · The Journal of nutrition, health and aging · doi:10.1007/bf02982704 · Cited by 1,071
Sarcopenia: characteristics, mechanisms and functional significance
Narici, M. V., & Maffulli, N. (2010) · British Medical Bulletin · doi:10.1093/bmb/ldq008 · Cited by 827
Effects of Resistance Training on Older Adults
Hunter, G. R., McCarthy, J. P., & Bamman, M. M. (2004) · Sports Medicine · doi:10.2165/00007256-200434050-00005 · Cited by 764
García-Hermoso, A., Cavero-Redondo, I., Ramírez-Vélez, R., Ruiz, J. R., Ortega, F. B., Lee, D.-C., & Martínez-Vizcaíno, V. (2018) · Archives of Physical Medicine and Rehabilitation · doi:10.1016/j.apmr.2018.01.008 · Cited by 609
Metadata
- Authors
- Kent-Braun, J. A., Ng, A. V., & Young, K.
- Venue
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Published
- 2000-02-01
- Volume
- 88
- Issue
- 2
- Pages
- 662-668
- ISSN
- 0161-7567 (ISSN-L)
- 8750-7587
- 1522-1601
- OpenAlex
- W2101547095
- Cited by
- 338
- References
- 7
- FWCI
- 4.91
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Kent-Braun, J. A., Ng, A. V., & Young, K. (2000). Skeletal muscle contractile and noncontractile components in young and older women and men. Journal of Applied Physiology. https://doi.org/10.1152/jappl.2000.88.2.662
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
