Back to Search
Start Over
Hamstring and gluteal activation during high-speed overground running: Impact of prior strain injury.
- Source :
-
Journal of sports sciences [J Sports Sci] 2021 Sep; Vol. 39 (18), pp. 2073-2079. Date of Electronic Publication: 2021 May 05. - Publication Year :
- 2021
-
Abstract
- This study examined the spatial patterns of hamstring and gluteal muscle activation during high-speed overground running in limbs with and without aprior hamstring strain injury. Ten active males with arecent (<18 month) unilateral biceps femoris long head (BFLH) strain injury underwent functional magnetic resonance imaging before and immediately after arepeat-sprint running protocol. Transverse relaxation (T2) time, an index of muscle activation, of the BFLH and short head (BFSH), semitendinosus (ST), semimembranosus (SM), gluteus maximus (GMAX) and medius (GMED) was assessed pre-post exercise. No significant between-limb differences in running-induced mean T2 changes were observed (p = 0.949), however, decision tree induction revealed that previously injured limbs were characterised by highly variable intramuscular activation of the ST (SD5.3). T2 times increased more for GMAX than all other muscles (all p< 0.001, d= 0.5-2.5). Further, T2 changes were greater for ST than BFSH, SM, GMED, and BFLH (all p≤ 0.001, d= 0.5-2.9); and were greater for BFLH than BFSH, SM, and GMED (all p< 0.001, d= 1.2-1.6). Athletes display heterogenous patterns of posterior thigh activation when sprinting (G <subscript>MAX</subscript> >ST>BF <subscript>LH</subscript> >G <subscript>MED</subscript> >SM>BF <subscript>SH</subscript> ) and may exhibit altered intramuscular hamstring activation after returning to sport from BFLH strain injury.
- Subjects :
- Adult
Buttocks diagnostic imaging
Cross-Sectional Studies
Hamstring Muscles diagnostic imaging
Humans
Magnetic Resonance Imaging
Male
Muscle, Skeletal diagnostic imaging
Sprains and Strains diagnostic imaging
Young Adult
Buttocks injuries
Hamstring Muscles injuries
Muscle, Skeletal injuries
Running injuries
Sprains and Strains etiology
Subjects
Details
- Language :
- English
- ISSN :
- 1466-447X
- Volume :
- 39
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Journal of sports sciences
- Publication Type :
- Academic Journal
- Accession number :
- 33949909
- Full Text :
- https://doi.org/10.1080/02640414.2021.1917839