Article

Association of low back pain and standing postural control (PC) deficits are
reported inconsistently. Demands on PC adaptation strategies are increased by
restraining the input of visual or somatosensory senses.
The objectives of the
current study are, to investigate whether PC adaptations of the spine, hip and
the centre of pressure (COP) differ between patients reporting non-specific low
back pain (NSLBP) and asymptomatic controls. The PC adaption strategies of the
thoracic and lumbar spine, the hip and the COP were measured in fifty-seven NSLBP
patients and 22 asymptomatic controls. We tested three "feet together" conditions
with increasing demands on PC strategies, using inertial measurement units (IMUs)
on the spine and a Wii balance board for centre of pressure (COP) parameters. The
differences between NSLBP patients and controls were most apparent when the
participants were blindfolded, but remaining on a firm surface. While NSLBP
patients had larger thoracic and lumbar spine mean absolute deviations of
position (MADpos) in the frontal plane, the same parameters decreased in control
subjects (relative change (RC): 0.23, 95% confidence interval: 0.03 to 0.45 and
0.03 to 0.48). The Mean absolute deviation of velocity (MADvel) of the thoracic
spine in the frontal plane showed a similar and significant effect (RC: 0.12 95%
CI: 0.01 to 0.25). Gender, age and pain during the measurements affected some
parameters significantly. PC adaptions differ between NSLBP patients and
asymptomatic controls. The differences are most apparent for the thoracic and
lumbar parameters of MADpos, in the frontal plane and while the visual condition
was removed.
CI - Copyright (c) 2014 Elsevier B.V. All rights reserved.

Langue : ANGLAIS