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Trunk position sense, postural stability, and spine posture in fibromyalgia

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This study aimed to investigate trunk position sense, postural stability, and spine posture in women with fibromyalgia syndrome (FMS). Fifteen (15) women with FMS and age- and gender-matched fifteen (15) healthy controls were included. Trunk position sense as indicated by trunk reposition errors (TRE) and spine posture (thoracic and lumbar curvature) was measured with a digital inclinometer. Postural stability [eyes open (EO) and eyes closed (EC) on bipedal stance (BS), EO on monopedal stance (MS), and limits of stability (LOS)] was assessed with a computerized stabilometer (Prokin, TecnoBody S.R.L., Dalmine, 24044 Bergamo, Italy). TRE (p = 0.002) and the angle of thoracic curvature (p = 0.009) were found higher in women with FMS compared to healthy controls; however, the angle of lumbar curvature was similar (p = 0.467). It was seen that women with FMS had higher anterior–posterior sway in EO-BS (p = 0.009) and EC-BS (p = 0.001), ellipse area in EC-BS (p = 0.015), EO-MS of the dominant side (p = 0.021), and EO-MS of the non-dominant side (p = 0.007), and medial–lateral sway in EO-MS of the dominant (DM) side (p = 0.004) and the non-dominant (NDM) side (p = 0.002). Ellipse area in EO-BS (p = 0.054), medial–lateral sway in EO-BS (p = 0.983) and EC-BS (p = 0.290), anterior–posterior sway in EO-MS of the DM (p = 0.059) and the NDM side (p = 0.065), and LOS did not differ between groups (p = 0.274). Women with FMS had poor trunk position sense and postural instability, and alterations in spine posture. Therefore, the training of trunk position sense, postural stability, and posture might be beneficial and, thus, should be considered while planning an optimal treatment.

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Authors and Affiliations



STE: the design of the work, the analysis and interpretation of data for the work OM: the design of the work, the acquisition and interpretation of data for the work. OC: the acquisition, analysis and interpretation of data for the work. DO: the interpretation of data for the work. SE: the interpretation of data for the work, the acquisition of data for the work.

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Correspondence to Seyda Toprak Celenay.

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Author Toprak Celenay, author Mete, author Coban, author Oskay, and author Erten declare that they have no conflict of interest.

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Patients were informed and their informed consents were obtained prior to the study. The study design was approved by the ethics committee of Ankara Yildirim Beyazit University (approval number: 43/43).

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Toprak Celenay, S., Mete, O., Coban, O. et al. Trunk position sense, postural stability, and spine posture in fibromyalgia. Rheumatol Int 39, 2087–2094 (2019).

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