Some physicians, physiotherapists and nurses use or even suggest unstable shoes in cases of low back pain. No studies on the real effects of these shoes on low back pain in health care professions have been carried out and therefore as yet there is no real evidence of their effectiveness. Thus the investigators assume that wearing unstable shoes over a period of six weeks could reduce low back pain and functional disability due to the changes of the gait and posture and may increase the quality of life. The purposes of this study are: 1. To evaluate the modifications of pain level, functional capacity and quality of life among individuals with moderate level of non-specific chronic low back pain after wearing unstable shoes. 2. To quantify biomechanical modifications of gait and posture.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
40
Wearing unstable (MBT) shoes during 6 weeks
Normal stable shoes (Adidas Bigroar2)
University Hospitals of Geneva
Geneva, Switzerland
Change from baseline in low back pain at 6 weeks
Low back pain level with the visual analogue scale (VAS) from 0 to 10;
Time frame: Baseline and 6 weeks
Change from baseline in the Roland-Morris disability questionnaire at 6 weeks
functional disability with the Roland-Morris disability questionnaire (this questionnaire has been validated in French as the Functional Disability Scale for the Assessment of Low Back Pain - Eifel)
Time frame: Baseline and 6 weeks
Change from baseline in the EQ-5D quality of life questionnaire at 6 weeks
Quality of life with the EQ-5D.
Time frame: Baseline and 6 weeks
Change from baseline in gait speed at 6 weeks
Seft-selected gait speed
Time frame: Baseline and 6 weeks
Change from baseline in balance performance at 6 weeks
center of pressure speed in conditions : * eyes opened and eyes closed * stable and unstable surface
Time frame: Baseline and 6 weeks
Change from baseline in ankle dorsiflexion during gait at 6 weeks
Ankle dorsiflexion at initial contact during gait
Time frame: Baseline and 6 weeks
Change from baseline in pelvis anteversion during gait at 6 weeks
Mean pelvis anteversion during gait
Time frame: Baseline and 6 weeks
Change from baseline in trunk anteversion during gait at 6 weeks
Mean trunk anteversion during gait
Time frame: Baseline and 6 weeks
Change from baseline in activation period of lower-limb muscles during gait at 6 weeks
Activation period of lower-limb muscles (gasctrocnemius, peroneus, tibialis anterior, rectus femoris and semi-tendinosus) during gait
Time frame: Baseline and 6 weeks
Change from baseline in activation period of erector spinae during gait at 6 weeks
Activation period of erector spinae during gait
Time frame: Baseline and 6 weeks
Change from baseline in maximum knee extension during gait stance phase at 6 weeks
Maximum knee extension during stance phase
Time frame: Baseline and 6 weeks
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