Purpose: The main objective of the present study was to evaluate the effects of laterality discrimination training on neck joint position sense and cervical range of motion (ROM) in patients with chronic non-specific neck pain (NSCNP). Materials and methods: Forty-eight patients with NSCNP were randomly assigned to the neck group (NG) that observed neck images or the foot group (FG) that observed foot images. Response time, response accuracy, cervical ROM, and joint position error (JPE) were the main variables. The secondary outcome measures included psychosocial variables. Results: Differences between groups in the cervical ROM for flexion (p = .043) were obtained, being NG group the one which obtained greater values. NG showed an improvement in right rotation (p = .018) and a decrease in flexion was found in the FG (p = .039). In JPE, differences between groups were obtained in the left rotation (p = .021) and significant changes were found in the NG for flexion, extension, and left rotation movements (p < .05). Moderate associations were found between left and right accuracy regarding to post-intervention flexion and right rotation (r = 0.46, r = 0.41; p < .05) in NG. Conclusion: Improvements in cervical range of motion and joint position sense are obtained after the performance of the laterality discrimination task of images of the neck but not the feet. Visualization of images of the painful region presents moderate correlations with the accuracy and response time in the movements of flexion and right rotation.

中文翻译：

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偏侧性歧视对慢性颈痛患者关节位置感和颈椎活动范围的影响：一项随机单盲临床试验。

目的：本研究的主要目的是评估侧向歧视训练对慢性非特异性颈部疼痛（NSCNP）患者颈部关节位置感和颈椎活动范围（ROM）的影响。材料和方法：将48例NSCNP患者随机分为观察颈部图像的颈部组（NG）或观察足图像的脚组（FG）。响应时间，响应准确性，子宫颈ROM和关节位置误差（JPE）是主要变量。次要结局指标包括社会心理变量。结果：获得了颈椎ROM屈曲组之间的差异（p = .043），其中NG组获得了更大的价值。NG显示右旋改善（p = .018），FG屈曲减少（p = .039）。在JPE中，两组之间的差异是左旋运动（p = .021），NG在屈曲，伸展和左旋运动方面有显着变化（p <.05）。在NG中，关于介入后屈曲和右旋的左右准确性之间存在中等关联（r = 0.46，r = 0.41； p <.05）。结论：执行颈部图像而不是脚部图像的侧向识别任务后，可以改善子宫颈的运动范围和关节位置感。疼痛区域图像的可视化与屈曲和右旋运动的准确性和反应时间呈中等相关性。左右旋转运动（p <.05）。在NG中，关于介入后屈曲和右旋的左右准确性之间存在中等关联（r = 0.46，r = 0.41； p <.05）。结论：执行颈部图像而不是脚部图像的侧向识别任务后，可以改善子宫颈的运动范围和关节位置感。疼痛区域图像的可视化与屈曲和右旋运动的准确性和反应时间呈中等相关性。左和左旋转运动（p <.05）。在NG中，在介入后屈曲和右旋方面，左右准确性之间存在中等关联（r = 0.46，r = 0.41； p <.05）。结论：执行颈部图像而不是脚部图像的侧向识别任务后，可以改善子宫颈的运动范围和关节位置感。疼痛区域图像的可视化与屈曲和右旋运动的准确性和响应时间呈现适度的相关性。在执行颈部图像而不是脚部图像的侧向识别任务后，可以改善子宫颈的运动范围和关节位置感。疼痛区域图像的可视化与屈曲和右旋运动的准确性和响应时间呈现适度的相关性。在执行颈部图像而非脚部图像的侧向识别任务后，可以改善子宫颈的运动范围和关节位置感。疼痛区域图像的可视化与屈曲和右旋运动的准确性和响应时间呈现适度的相关性。