Aydın Elif, Metin Tellioğlu Ayfer, Kurt Ömürlü İmran, Polat Gizem, Turan Yasemin
Department of Physical Therapy and Rehabilitation, Medical Faculty of Adnan Menderes University, Aydın, Turkey.
Department of Anatomy, Medical Faculty of Adnan Menderes University, Aydın, Turkey.
Turk J Phys Med Rehabil. 2017 Jan 2;63(3):259-265. doi: 10.5606/tftrd.2017.160. eCollection 2017 Jun.
This study aims to investigate the potential relationship between joint laxity and postural balance by using tetra-ataxiometric posturography (Tetrax®).
A total of 69 healthy volunteers were included in the study and classified into three groups based on their hypermobility severity determined with Beighton-Horan hypermobility index scores. Of those, 29 participants were non-hypermobile, 13 participants were mildly hypermobile and remaining 27 patients had severe hypermobility. Postural control of the participants was evaluated by using the Tetrax® device in eight different positions. The stability index, Fourier index, weight distribution index, and synchronization index scores of each participant were recorded.
We found that the participants with severe hypermobility exhibited significantly higher stability index scores while the position of the head is extended and rotated right. The weight distribution index on elastic surfaces was impaired in non-hypermobile and severely hypermobile participants. We observed that the Fourier Index scores were higher at a higher-medium frequency (0.5-1 Hz) in participants with severe hypermobility. There was no difference between the groups in terms of synchronization index scores.
These findings suggest that severely hypermobile individuals have a decreased postural stability in head-extended and head- rotated positions when compared to individuals who are non-hypermobile. This increased instability may lead to an increased risk of musculoskeletal injuries, especially in sports that require extension and rotation movements of the head.
本研究旨在通过使用四轴测力姿势描记法（Tetrax®）来调查关节松弛与姿势平衡之间的潜在关系。
共有69名健康志愿者纳入本研究，并根据使用贝顿-霍兰关节活动过度指数评分确定的关节活动过度严重程度分为三组。其中，29名参与者无关节活动过度，13名参与者轻度关节活动过度，其余27名患者严重关节活动过度。使用Tetrax®设备在八个不同位置评估参与者的姿势控制。记录每位参与者的稳定性指数、傅里叶指数、体重分布指数和同步指数评分。
我们发现，严重关节活动过度的参与者在头部伸展并向右侧旋转时，稳定性指数评分显著更高。非关节活动过度和严重关节活动过度的参与者在弹性表面上的体重分布指数受损。我们观察到，严重关节活动过度的参与者在中高频（0.5 - 1 Hz）时傅里叶指数评分更高。各组在同步指数评分方面没有差异。
这些发现表明，与无关节活动过度的个体相比，严重关节活动过度的个体在头部伸展和头部旋转位置时姿势稳定性降低。这种增加的不稳定性可能导致肌肉骨骼损伤风险增加，尤其是在需要头部伸展和旋转运动的运动中。
