Asymmetrical and smaller size of trunk muscles in combat sports athletes with lumbar intervertebral disc degeneration.
Springerplus
; 5(1): 1474, 2016.
Article
em En
| MEDLINE
| ID: mdl-27652049
ABSTRACT
BACKGROUND:
Lumbar intervertebral disc degeneration (LDD) frequently occurs in athletes. Associations between LDD and trunk muscles still remain unclear.PURPOSE:
This study examined whether there is an association between the prevalence of LDD and the symmetry and size of the cross-sectional areas (CSAs) of the trunk muscles in combat sports athletes.METHODS:
Participants in this study were 151 collegiate male combat sports athletes. A total of 755 lumbar intervertebral discs from L1-2 to L5-S1 in 151 athletes were assessed using magnetic resonance imaging (MRI) and a comprehensive grading system of LDD (grades I-V). All 151 athletes were divided into 2 groups LDD and non-LDD. CSAs of trunk muscles at the L3-4 disc level were measured using MRI.RESULTS:
Sixty-nine athletes had LDD at 1 or more disc levels (45.7 %). The LDD grade for the lower 2 disc levels was significantly higher than that for the other disc levels (p < 0.001). The CSAs of the left and right sides in trunk muscles were significantly asymmetrical, independent of the LDD which was prevalent in the disc levels (obliques p = 0.040; quadratus lumborum p < 0.001). The relative CSAs of trunk muscles to their body weight in the LDD group were significantly smaller than those in the non-LDD group (rectus abdominis p = 0.011; obliques p = 0.024; quadratus lumborum p = 0.006; lumbar erector spinae plus multifidus p = 0.001).CONCLUSION:
This study suggests that the prevalence of LDD is associated with asymmetrical and relatively smaller CSAs of trunk muscles in combat sports athletes.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article