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Joint Bone Spine. 2008 Jan;75(1):58-63. Epub 2007 Aug 30.

Effect of wearing a lumbar orthosis on trunk muscles: study of the muscle strength after 21days of use on healthy subjects.

Author information

1
Service de Médecine Physique et Réadaptation, EA 3062, Université Jean Monnet, CHU Saint-Etienne, Hôpital Bellevue, 42055 Saint Etienne Cedex 2, France.

Abstract

INTRODUCTION:

Randomized and controlled study of clinical evaluation of medical device in healthy subjects.

OBJECTIVE:

To evaluate the effect of wearing an elastic lumbar support, frequently used in low-back pain prevention or treatment, on the trunk flexors and extensors muscle strength on healthy subjects.

SUMMARY OF BACKGROUND DATA:

The long-term use of a lumbar orthosis is still suspected of weakening on the trunk muscles. The results in the existing literature are contradictory but don't seem to confirm this.

METHODS:

Trunk muscle isokinetic and isometric strength measured before and after the wearing of an elastic orthosis over a period of 21days by healthy subjects with a control group without orthosis.

RESULTS:

There were 20 healthy subjects using orthosis and 9 controls. No changes in isokinetic and isometric strength were observed except for the endurance parameter on extensors: it was significantly more important before than after the lumbar support use (p=0.033).

CONCLUSION:

These results disprove any negative effects on muscle strength and add to the existing literature which argues for a more customized prescription of lumbar orthosis depending on the potential muscle strength of the subject.

PMID:
18029219
DOI:
10.1016/j.jbspin.2007.04.018
[Indexed for MEDLINE]

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