Department of Physical Medicine and Rehabilitation, National Yang-Ming University Hospital, Taipei, Taiwan.
J Rehabil Med. 2012 Mar;44(3):229-34. doi: 10.2340/16501977-0927.
To determine the influence of mechanical intermittent cervical traction on the autonomic system.
Prospective, cases series study.
Sixteen healthy volunteers without contraindications for cervical traction.
Subjects received mechanical intermittent cervical traction in a sitting position under two traction forces (10% and 20% of total body weight). Electrocardiographic and neck surface electromyographic signals were recorded and analysed from 3 5-min periods (before, during and after traction). Subjective symptoms, heart rate and heart rate variability parameters, including standard deviation of all normal-to-normal beat intervals, very low-frequency power, low-frequency power, high-frequency power, multiscale entropy, slope of multiscale entropy, and root mean square value of electromyography amplitude were statistically compared.
This pilot study showed that using 10% body weight traction force was more comfortable than using 20% body weight. Only subtle perturbation was noted in the autonomic system when using 20% body weight traction force.
The response pattern of heart rate variability analysis in this pilot study provides some early information about individual discomfort in cervical traction. The autonomic modulation and the safety of cervical traction with other modality settings or in patients with neck pain require further study.
确定机械间歇性颈椎牵引对自主神经系统的影响。
前瞻性病例系列研究。
16 名无颈椎牵引禁忌证的健康志愿者。
受试者在坐位下接受两种牵引力量（体重的 10%和 20%）的机械间歇性颈椎牵引。从 3 个 5 分钟的时间段（牵引前、牵引中和牵引后）记录和分析心电图和颈部表面肌电图信号。对主观症状、心率和心率变异性参数（包括所有正常-正常心搏间期的标准差、极低频功率、低频功率、高频功率、多尺度熵、多尺度熵斜率和肌电图幅度的均方根值）进行统计学比较。
本初步研究表明，使用体重的 10%作为牵引力量比使用 20%更为舒适。使用 20%体重牵引力量时，仅观察到自主神经系统的细微扰动。
本初步研究中心率变异性分析的反应模式为颈椎牵引中个体不适提供了一些早期信息。需要进一步研究其他模式设置或颈痛患者的自主神经调节和颈椎牵引的安全性。
