Lee Chang-Hyung, Lee Sojeong, Shin Gwanseob
Rehabilitation Medicine, School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Republic of Korea.
Department of Human Factors Engineering, Ulsan National Institute of Science and Technology, Republic of Korea.
Hum Mov Sci. 2017 Oct;55:81-86. doi: 10.1016/j.humov.2017.07.008. Epub 2017 Aug 4.
Forward head posture has been evaluated mostly by visual observation or simple non-invasive measurements without a standardized evaluation method or protocol. In this experimental study, the reliability of existing forward head-posture measurement methods was evaluated by computing the intra-class correlation coefficients of three different head-position variables (two horizontal gap variables and one head-orientation variable) in seven different posture conditions from 20 asymptomatic participants. The position variables of the head were measured three times using a three-dimensional motion capture system while sitting comfortably, sitting with the back straight, standing comfortably, standing with the back straight, walking at 4 and 6km/h on a treadmill, and running at 8km/h on a treadmill. Intra-class correlation coefficients between repetitive measures ranged from 0.81 to 0.96, and high correlation coefficient values (>0.9) were produced when the head-position variables were measured during straight sitting, straight standing, and walking at 6km/h. Among the three head-position variables, a horizontal gap between the tragus and the 7th cervical vertebra was recorded more consistently than other variables. Results of this study highlight the importance of a standardized evaluation protocol for more reliable assessment of the forward head posture.
头部前倾姿势大多是通过视觉观察或简单的非侵入性测量来评估的，缺乏标准化的评估方法或方案。在这项实验研究中，通过计算20名无症状参与者在七种不同姿势条件下三个不同头部位置变量（两个水平间隙变量和一个头部方向变量）的组内相关系数，评估了现有头部前倾姿势测量方法的可靠性。使用三维运动捕捉系统，在舒适坐姿、挺直背部坐姿、舒适站姿、挺直背部站姿、在跑步机上以4公里/小时和6公里/小时的速度行走以及在跑步机上以8公里/小时的速度跑步这七种姿势下，对头部的位置变量进行了三次测量。重复测量之间的组内相关系数在0.81至0.96之间，当在挺直坐姿、挺直站姿和以6公里/小时的速度行走时测量头部位置变量时，产生了较高的相关系数值（>0.9）。在三个头部位置变量中，耳屏与第七颈椎之间的水平间隙比其他变量记录得更一致。这项研究的结果突出了标准化评估方案对于更可靠地评估头部前倾姿势的重要性。
