ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2025
Visual dependence, postural stability during repeated unilateral standing tasks, and quality of life in adults with chronic low back pain.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundPostural deficits are a common impairment in adults with chronic low back pain (LBP). However, the relationship between dynamic sway boundaries, visual reliance, and health-related quality of life (QOL) with LBP remains poorly understood. PURPOSE: This study investigated differences in sway excursion, circular stability thresholds, and QOL between adults with and without LBP during repeated unilateral stance tasks under eyes-open and eyes-closed conditions.
methodsEighty adults (45 with LBP, 35 controls) completed three unilateral stance trials on their dominant leg using a force platform. Participants performed three unilateral standing trials under the eyes-open condition and three trials under the eyes-closed condition on each limb. Sway excursion was quantified within 25%, 50%, and 75% circular thresholds inside a fixed 5 cm radius. Eight short form-36 QOL domains, including bodily pain, were used as covariates.
resultsSignificant main effects were observed for vision (F = 108.17, p < 0.001), trial repetition (F = 15.56, p < 0.001), and boundary threshold (F = 114.20, p < 0.001), along with a significant group interaction for vision × trial × boundary level (F = 4.01, p = 0.04). Post hoc analysis indicated reduced sway excursion in the LBP group, particularly at the 25% and 50% thresholds during trials 2 and 3. QOL-related analyses showed that boundary level was significantly associated with role limitations due to lower physical functioning scores (β = -0.34, p = 0.01).
conclusionPostural control during unilateral stance is modulated by visual input, task repetition, and spatial constraint. The LBP group demonstrated constrained sway excursion and reduced adaptability, which are reflected in diminished improvements in time-in-boundary across trials, particularly under eyes-closed conditions at wider sway thresholds. These limitations were relevant with lower physical functioning.
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