Article

Although a number of studies have evaluated kinematic stability changes in
subjects with low back pain (LBP), the combined sensitivity of normalized
standing stability from the ground force and kinematic rotational angle of the
body segment were not carefully examined for postural responses. The purpose of
this study was to evaluate normalized standing stability in subjects with and
without recurrent LBP while they stood quietly with the tested foot parallel to
the other lower extremity at hip width. The subjects were then instructed to
stand freely on one leg for 25 s with the contra lateral hip flexed 90 degrees
based on dominance side (dominant leg vs. non-dominant lower extremity) and
visual condition (eyes open vs. eyes closed). A total of 42 subjects (27 subjects
without LBP and 15 subjects with LBP) participated in the study. The dominant leg
standing stability was significantly different during the eyes closed condition
(0.68+/-0.30 for control vs. 0.37+/-0.32 for LBP, T=-3.23, p=0.002) compared to
the eyes open condition. The standing kinematic stability, especially of the
dominant thigh, was greater in the control subjects than in the subjects with LBP
(T=-2.43, p=0.02). This sensitive detection of kinematic imbalance with postural
stability is important for effective rehabilitation strategies and to
understanding compensatory mechanisms in subjects with recurrent LBP.
CI - Copyright (c) 2012 Elsevier B.V. All rights reserved.

Langue : ANGLAIS