SOMT University of Physiotherapy, Amersfoort, The Netherlands; CAPHRI School for Public Health and Primary Care, Maastricht University, The Netherlands.
SOMT University of Physiotherapy, Amersfoort, The Netherlands; Vrije Universiteit Brussel, Department of Experimental Anatomy, Brussels, Belgium.
Musculoskelet Sci Pract. 2018 Apr;34:59-65. doi: 10.1016/j.msksp.2017.12.006. Epub 2017 Dec 16.
There is a lack of valid, reliable, and feasible instruments for measuring planar active cervical range of motion (aCROM) and associated 3D coupling motions in patients with neck pain. Smartphones have advanced sensors and appear to be suitable for these measurements.
To estimate the concurrent validity and interrater reliability of a new iPhone application for assessing planar aCROM and associated 3D coupling motions in patients with neck pain, using an electromagnetic tracking device as a reference test.
Cross-sectional study.
Two samples of neck pain patients were recruited; 30 patients for the validity study and 26 patients for the reliability study. Validity was estimated using intraclass correlation coefficients (ICCs), and by calculating 95% limits of agreement (LoA). To estimate interrater reliability, ICCs were calculated. Cervical 3D coupling motions were analyzed by calculating the cross-correlation coefficients and ratio between the main motions and coupled motions for both instruments.
ICCs for concurrent validity and interrater reliability ranged from 0.90 to 0.99. The width of the 95% LoA ranged from about 5° for right lateral bending to 11° for total rotation. No significant differences were found between both devices for associated coupling motion analysis.
The iPhone application appears to be a useful discriminative tool for the measurement of planar aCROM and associated coupling motions in patients with neck pain. It fulfills the need for a valid, reliable, and feasible instrument in clinical practice and research. Therapists and researchers should consider measurement error when interpreting scores.
目前缺乏有效、可靠且可行的工具来测量颈痛患者的平面主动颈椎活动度（aCROM）和相关的 3D 耦合运动。智能手机具有先进的传感器，似乎适合这些测量。
使用电磁跟踪装置作为参考测试，评估一种新的 iPhone 应用程序评估颈痛患者平面 aCROM 和相关 3D 耦合运动的同时效度和组内相关性。
横断面研究。
招募了两组颈痛患者；30 名患者用于有效性研究，26 名患者用于可靠性研究。使用组内相关系数（ICC）和计算 95%一致性界限（LoA）来评估有效性。为了评估组内相关性，计算了 ICC。通过计算两种仪器的主运动和耦合运动之间的交叉相关系数和比率，来分析颈椎 3D 耦合运动。
同时效度和组内相关性的 ICC 范围从 0.90 到 0.99。95%LoA 的宽度从右侧侧屈的约 5°到总旋转的 11°不等。两种设备在相关耦合运动分析方面没有发现显著差异。
iPhone 应用程序似乎是一种有用的工具，可用于测量颈痛患者的平面 aCROM 和相关的耦合运动。它满足了临床实践和研究中对有效、可靠且可行工具的需求。治疗师和研究人员在解释分数时应考虑测量误差。
