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Capillary supply of...
Capillary supply of the tibialis anterior muscle in young, healthy, and moderately active men and women
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- Porter, MM (author)
- Faculty of Physical Education and Recreation Studies, University of Manitoba, Winnipeg, Manitoba, Canada
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- Stuart, S (author)
- Faculty of Physical Education and Recreation Studies, University of Manitoba, Winnipeg, Manitoba, Canada
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- Boij, M (author)
- Department of Rehabilitation, Lund University Hospital, Lund, Sweden
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- Lexell, Jan (author)
- Luleå tekniska universitet,Lund University,Lunds universitet,Neurokirurgi,Sektion IV,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neurosurgery,Section IV,Department of Clinical Sciences, Lund,Faculty of Medicine,Institutionen för hälsovetenskap,Department of Rehabilitation, Lund University Hospital, Lund, Sweden
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(creator_code:org_t)
- American Physiological Society, 2002
- 2002
- English.
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In: Journal of Applied Physiology. - : American Physiological Society. - 1522-1601 .- 8750-7587. ; 92:4, s. 1451-1457
- Related links:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Tibialis anterior muscle biopsies from moderately active men and women (21-30 yr; n = 30) were examined to determine potential gender differences in capillarization. The fiber type proportions [type I (T1) similar to73%] were unaffected by gender. The men (M) had significantly (P < 0.001) larger fibers than the women (W), with a greater gender effect for type II (T2) fibers P < 0.001). The M and W had similar capillary densities (CD similar to390 capillaries/mm(2)), but the capillaries-to-fiber ratio (C/F) was higher in the M (M = 2.20 +/- 0.35, W = 1.66 +/- 0.32; P < 0.01). Capillary contacts (CC) were higher in T2 than T1 for the M (P < 0.01), but not W, and M had greater CC (P < 0.001). Both fiber area per capillary (FA/C) and fiber perimeter per capillary (FP/C) indicated that T1 fibers had greater capillarization than T2 fibers (P < 0.001). There were no gender differences in T1 FA/C and T2 FA/C or T1 FP/C, but a gender difference existed for T2 FP/C (M = 60.5 +/- 10.9, W = 70.6 +/- 13.4; P < 0.01). The gender difference for C/F could be explained by fiber size; however, the physiological implications of the difference in T2 FP/C remains to be determined. In conclusion, despite gender differences for fiber size, overall, capillarization was similar between the men and women.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Keyword
- muscle fibers
- capillaries
- sex factors
Publication and Content Type
- art (subject category)
- ref (subject category)
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