What question did this study set out to answer?

To investigate whether sex differences exist in capillarization and fiber morphology within the tibialis anterior muscle of young, healthy adults.

April 1, 2002Journal of Applied Physiology

Capillary supply of the tibialis anterior muscle in young, healthy, and moderately active men and women

View Full Paper

Ask AI

Bookmark

Authors

MPMichelle M. PorterUniversity of Toronto SSS. K. StuartUniversity of Manitoba MBM. BoijLund University

Discussion

Member takes

Implication

Comparative study demonstrates equivalent overall muscle capillarization between active young men and women despite differences in fiber size, suggesting comparable baseline microvascular supply.

Key Points

To investigate whether sex differences exist in capillarization and fiber morphology within the tibialis anterior muscle of young, healthy adults.
Examined tibialis anterior muscle biopsies obtained from young, moderately active men and women aged 21–30 years (n = 30).
Assessed fiber type distribution, fiber cross-sectional area, capillary density (CD), capillary-to-fiber ratio (C/F), capillary contacts (CC), fiber area per capillary (FA/C), and fiber perimeter per capillary (FP/C).
Men had significantly larger muscle fibers than women (P < 0.001) and a higher capillary-to-fiber ratio (2.20 ± 0.35 vs. 1.66 ± 0.32; P < 0.01), which was accounted for by muscle fiber size.
Capillary density was equivalent between groups at approximately 390 capillaries/mm², and fiber area per capillary showed no sex differences for type I or type II fibers.
Type II fiber perimeter per capillary differed significantly between sexes, measuring 60.5 ± 10.9 in men versus 70.6 ± 13.4 in women (P < 0.01).

Cite This Study

Porter et al. (2002) studied this question.

synapsesocial.com/papers/69debfb1499d77a496b0cbb2 https://doi.org/10.1152/japplphysiol.00744.2001

View Full Paper

Ask AI

Bookmark

April 1, 2002Journal of Applied Physiology

Capillary supply of the tibialis anterior muscle in young, healthy, and moderately active men and women

View Full Paper

Ask AI

Bookmark

Authors

MPMichelle M. PorterUniversity of Toronto SSS. K. StuartUniversity of Manitoba MBM. BoijLund University

Discussion

Member takes

Implication

Comparative study demonstrates equivalent overall muscle capillarization between active young men and women despite differences in fiber size, suggesting comparable baseline microvascular supply.

Key Points

To investigate whether sex differences exist in capillarization and fiber morphology within the tibialis anterior muscle of young, healthy adults.
Examined tibialis anterior muscle biopsies obtained from young, moderately active men and women aged 21–30 years (n = 30).
Assessed fiber type distribution, fiber cross-sectional area, capillary density (CD), capillary-to-fiber ratio (C/F), capillary contacts (CC), fiber area per capillary (FA/C), and fiber perimeter per capillary (FP/C).
Men had significantly larger muscle fibers than women (P < 0.001) and a higher capillary-to-fiber ratio (2.20 ± 0.35 vs. 1.66 ± 0.32; P < 0.01), which was accounted for by muscle fiber size.
Capillary density was equivalent between groups at approximately 390 capillaries/mm², and fiber area per capillary showed no sex differences for type I or type II fibers.
Type II fiber perimeter per capillary differed significantly between sexes, measuring 60.5 ± 10.9 in men versus 70.6 ± 13.4 in women (P < 0.01).

Cite This Study

Porter et al. (2002) studied this question.

synapsesocial.com/papers/69debfb1499d77a496b0cbb2 https://doi.org/10.1152/japplphysiol.00744.2001

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark