Department of Chiropractic Medicine, Balgrist University Hospital, Zürich, Switzerland.
University of Zurich, Zürich, Switzerland.
Sci Rep. 2021 Sep 20;11(1):18627. doi: 10.1038/s41598-021-97786-3.
To investigate the effects of increasing axial load on cervical motor control. Surrogates of cervical motor control were active cervical range of motion (C-ROM) and joint position error (JPE) assessed in flexion, extension, lateroflexion and rotation directions in 49 healthy young men (mean age: 20.2 years). All measurements were executed with 0-, 1-, 2-, and 3-kg axial loads. Linear mixed models were used to assess the effects of axial loading and cervical movement-direction on C-ROM and JPE. Post-hoc analysis was performed to compare load levels. Axial loading (p = 0.045) and movement direction (p < 0.001) showed significant main effects on C-ROM as well as an interaction (p < 0.001). C-ROM significantly changed with 3-kg axial load by decreaseing extension (- 13.6%) and increasing lateroflexion (+ 9.9%). No significant main effect was observed of axial loading on JPE (p = 0.139). Cervical motor control is influenced by axial loading, which results in decreased C-ROM in extension and increased C-ROM lateroflexion direction.
探讨轴向负荷增加对颈椎运动控制的影响。通过对 49 名健康年轻男性（平均年龄：20.2 岁）颈椎前屈、后伸、侧屈和旋转方向的主动颈椎活动度（C-ROM）和关节位置误差（JPE）评估，寻找颈椎运动控制的替代指标。所有测量均在 0、1、2 和 3kg 轴向负荷下进行。采用线性混合模型评估轴向负荷和颈椎运动方向对 C-ROM 和 JPE 的影响。采用事后分析比较负荷水平。轴向负荷（p=0.045）和运动方向（p<0.001）对 C-ROM 以及交互作用（p<0.001）均有显著的主要影响。3kg 轴向负荷使 C-ROM 明显改变，表现为后伸减少（-13.6%），侧屈增加（+9.9%）。轴向负荷对 JPE 无显著主要影响（p=0.139）。颈椎运动控制受轴向负荷影响，导致伸展时 C-ROM 减少，侧屈时 C-ROM 增加。
