Journal
FRONTIERS IN PSYCHOLOGY
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpsyg.2022.1006034
Keywords
fear of movement; Kinesiophobia; postural control; postural sway; low back pain; anatomical planes; bipedal stance
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This study aimed to investigate the relationship between fear of movement and postural sway. The results showed that fear of bending the trunk in the frontal plane was positively associated with several measures of postural sway, while fear of bending the trunk in the sagittal plane was not associated with any specific measure of sway.
Background: Fear of movement is thought to interfere with the recovery from low back pain (LBP). To date, the relationship between fear of movement and postural balance has not been adequately elucidated. Recent findings suggest that more specific fears need to be assessed and put in relation to a specific movement task. We propose that the fear to bend the trunk in a certain direction is distinctly related to the amount of postural sway in different directions. Therefore, our aim was to investigate whether fear of movement in general and fear of bending the trunk in a certain plane is related to postural sway. Methods: Data was collected from participants with LBP during two assessments similar to 3 weeks apart. Postural sway was measured with a force-platform during quiet standing with the eyes closed. Fear of movement was assessed with an abbreviated version of the Tampa Scale of Kinesiophobia (TSK-11) and custom items referring to fear of bending the trunk in the sagittal and the frontal plane. Results: Based on data from 25 participants, fear of bending the trunk in the frontal plane was positively related to displacement in the sagittal and frontal plane and to velocity in the frontal plane (chi(2) = 4.35, p = 0.04; chi(2) = 8.15, p = 0.004; chi(2) = 9.79, p = 0.002). Fear of bending the trunk in the sagittal plane was not associated with any direction specific measure of sway. A positive relation of the TSK-11 with velocity of the frontal plane (chi(2) = 7.14, p = 0.008) was found, but no association with undirected measures of sway. DiscussionFear of bending the trunk in the frontal plane may be especially relevant to postural sway under the investigated stance conditions. It is possible that fear of bending the trunk in the frontal plane could interfere with balance control at the hip, shifting the weight from side to side to control balance. Conclusion: For the first time the directional relationship of fear of movement and postural sway was studied. Fear of bending the trunk in the frontal plane was positively associated with several measures of postural sway.
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