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Clin Biomech (Bristol, Avon). 2017 Oct;48:1-8. doi: 10.1016/j.clinbiomech.2017.06.010. Epub 2017 Jun 23.

The effect of an 8-week stabilization exercise program on the lumbopelvic rhythm and flexion-relaxation phenomenon.

Author information

1
School of Rehabilitation, Faculty of Medicine, Université de Montréal, 2900 Boul. Edouard-Montpetit, Montreal, Quebec H3T 1J4, Canada; Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), 505 Boul. de Maisonneuve O, Montreal, Quebec H3A 3C2, Canada. Electronic address: ali.shahvarpour@polymtl.ca.
2
Department of Rehabilitation and Movement Science, The University of Vermont, 305 Rowell Building, Burlington, VT 05405-0068, United States. Electronic address: sharon.henry@med.uvm.edu.
3
School of Physical and Occupational Therapy, McGill University, 3654 prom Sir-William-Osler, Montreal, Quebec H3G 1Y5, Canada; Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal Rehabilitation Institute, Montreal, Quebec, Canada. Electronic address: richard.preuss@mcgill.ca.
4
Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), 505 Boul. de Maisonneuve O, Montreal, Quebec H3A 3C2, Canada. Electronic address: hakim.mecheri@irsst.qc.ca.
5
Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), 505 Boul. de Maisonneuve O, Montreal, Quebec H3A 3C2, Canada; Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal Rehabilitation Institute, Montreal, Quebec, Canada. Electronic address: christian.lariviere@irsst.qc.ca.

Abstract

BACKGROUND:

Lumbar stabilization exercise programs should normalize the aberrant movements patterns often observed in patients with low back pain. This study aimed to determine the effect of an 8-week lumbar stabilization program on EMG/kinematics measures of the aberrant movement patterns in such patients. A secondary goal was to assess the 8-week test-retest reliability of these measures.

METHODS:

The patients followed an 8-week lumbar stabilization program while no intervention was carried out on the controls. Before and after this period, kinematics of the spine along with the EMG of paraspinal muscles were recorded during trunk maximal flexion-extension. ANOVAs tested the effect of the intervention in the patients, relative to the controls. Within the patients, correlation of the EMG/kinematics measures with the change in disability and pain following the intervention was investigated.

FINDINGS:

A significant reduction in pain (Hedges's g effect size=2.31) and improvement in function (g=1.74) was reported in the patients. While EMG/kinematics measures disclosed impairments in the patients at baseline compared to the controls, no change was observed over the intervention. Nevertheless, the change of lumbar range of motion was positively correlated (r=0.42; P=0.015) with the change in disability.

INTERPRETATION:

Although pain and disability decreased following the intervention, the EMG/kinematics measures did not change concomitantly suggesting that the patients learned to stiffen the lumbar spine during the treatment, and this technique was applied even if pain and disability unequivocally decreased after the treatment, which would not necessarily be beneficial to the patient.

KEYWORDS:

Flexion-relaxation; LBP; Lumbar stabilization; Lumbopelvic rhythm; Range of motion; Reliability

[Indexed for MEDLINE]

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