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Biceps femoris long head muscle fascicle length does not differ between sexes.
- Source :
- Journal of Sports Sciences; Nov2019, Vol. 37 Issue 21, p2452-2458, 7p, 1 Color Photograph, 3 Graphs
- Publication Year :
- 2019
-
Abstract
- Hamstring strain injury (HSI) rates are higher for males vs. females. This cross-sectional study investigated if inherent differences in biceps femoris long head (BF<subscript>LH</subscript>) fascicle length (Lf) exist between recreationally active males and females (i.e., individuals without specific training practice history). Twenty-four young healthy participants (12 males; 12 females) had their BF<subscript>LH</subscript> muscle architecture (Lf, pennation angle [θp], and muscle thickness [MT]) measured using B-mode ultrasonography. Eccentric and isometric knee flexion strength were also assessed. BF<subscript>LH</subscript> Lf did not differ between sexes when expressed in absolute terms (males, 81.5 ± 14.7 mm; females, 73.6 ± 15.9 mm, P = 0.220, effect size (ES) = 0.52) or relative to femur length (0.140 ≤ P ≤ 0.220, ES = 0.63). Similarly, BF<subscript>LH</subscript> θp did not differ between sexes (P = 0.650) but BF<subscript>LH</subscript> MT was 18.9% larger for males vs. females (P = 0.024, ES = 0.99). Isometric and eccentric knee flexion strength was greater for males vs. females in absolute terms ([both] P < 0.001, 2.00 ≤ ES ≤ 2.27) and relative to body mass ([both] P < 0.001, 1.93 ≤ ES ≤ 2.13). In conclusion, factors other than BF<subscript>LH</subscript> Lf seem likely to be implicated in higher male vs. female HSI rates. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02640414
- Volume :
- 37
- Issue :
- 21
- Database :
- Complementary Index
- Journal :
- Journal of Sports Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 138615200
- Full Text :
- https://doi.org/10.1080/02640414.2019.1641016