Type de document
Études primaires
Année de publication
2019
Langue
Anglais
Titre de la revue
Gait & Posture
Première page
211
Dernière page
216
Résumé
Background
Previous findings suggest that wearing a lumbar belt may benefit some patients with low back pain; however, the mechanisms of action are not yet fully understood.
Research question
The effect of wearing two flexible (extensible and non-extensible) lumbar belts on trunk postural control was investigated during an unstable sitting task.
Methods
Healthy subjects and subjects with LBP sat on a wobbling chair, with and without the lumbar belts. Chair rotation was measured in the sagittal and frontal planes, and 10 linear and nonlinear measures of balance were computed to assess the quantity (3 measures) and quality (7 measures) of the movements.
Results
Both lumbar belts induced similar changes in specific measures of trunk postural control, for both subject groups, generally indicative of more instability and less controllability, but with low effect sizes (0.14 and 0.40). Subjects with LBP also showed lower entropy (complexity; effect size 0.93) and higher determinism (predictability; effect size 0.56) than healthy controls, under all test conditions. These findings indicate that the subjects with LBP used a less complex, more predictable trunk postural control strategy, suggestive of impaired adaptability and responsiveness to dynamic trunk postural control demands. The findings also suggest other factors related to dynamic adaptability may be impaired by lumbar belt use.
Significance
The effects of the lumbar belts on trunk postural control were small, however, their practical implications for the management of LBP remain to be determined in relation to other effects of lumbar belts (e.g. increased mechanical stiffness).
Mots-clés
Maux de dos, Backache, Lésion du tronc, Trunk injury, Affection dorsale, Back disorder, Ceinture lombo-abdominale, Lifting belt, Mécanique humaine, Body mechanics, Détermination expérimentale, Experimental determination, Soulèvement des charges, Manual lifting, Recherche sur la douleur, Research on pain
Numéro de projet IRSST
2012-0055
Citation recommandée
Shahvarpour, A., Preuss, R. et Larivière, C. (2019). The effect of extensible and non-extensible lumbar belts on trunk postural balance in subjects with low back pain and healthy controls. Gait & Posture, 72, 211-216. https://doi.org/10.1016/j.gaitpost.2019.06.013