Capillary supply of the tibialis anterior muscle in young, healthy, and moderately active men and women
(2002) In Journal of Applied Physiology 92(4). p.1451-1457- Abstract
- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/341866
- author
- Porter, MM ; Stuart, S ; Boij, M and Lexell, Jan LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- muscle fibers, capillaries, sex factors
- in
- Journal of Applied Physiology
- volume
- 92
- issue
- 4
- pages
- 1451 - 1457
- publisher
- American Physiological Society
- external identifiers
-
- wos:000174572600014
- pmid:11896009
- scopus:0036095528
- ISSN
- 1522-1601
- DOI
- 10.1152/japplphysiol.00744.2001
- language
- English
- LU publication?
- yes
- id
- 5e31ddd8-d5bf-4678-875c-0dbd49705d1c (old id 341866)
- date added to LUP
- 2016-04-01 11:51:07
- date last changed
- 2022-04-28 21:01:10
@article{5e31ddd8-d5bf-4678-875c-0dbd49705d1c, abstract = {{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.}}, author = {{Porter, MM and Stuart, S and Boij, M and Lexell, Jan}}, issn = {{1522-1601}}, keywords = {{muscle fibers; capillaries; sex factors}}, language = {{eng}}, number = {{4}}, pages = {{1451--1457}}, publisher = {{American Physiological Society}}, series = {{Journal of Applied Physiology}}, title = {{Capillary supply of the tibialis anterior muscle in young, healthy, and moderately active men and women}}, url = {{http://dx.doi.org/10.1152/japplphysiol.00744.2001}}, doi = {{10.1152/japplphysiol.00744.2001}}, volume = {{92}}, year = {{2002}}, }