Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB T2N 4N1, Canada.
Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.
Sensors (Basel). 2019 Feb 8;19(3):686. doi: 10.3390/s19030686.
Wearable technology-based measurement systems hold potential for the therapeutic and rehabilitation management of patients with various chronic diseases. The purpose of this study was to assess the accuracy and test⁻retest reliability of a new-generation wearable sensor-based system, dubbed Ambulosono, for bio-feedback training. The Ambulosono sensor system was cross-validated by comparing its functionality with the iPod touch (4th generation) sensor system. Fifteen participants underwent a gait test to measure various gait parameters while wearing both the iPod-based and Ambulosono sensors simultaneously. The physically measured values (i.e., the true values) of step length, distance traveled, velocity, and cadence were then compared to those obtained via the two-sensor systems using the same calculation algorithms. While the mean percentage error was <10% for all measured parameters, and the intra-class correlation coefficient revealed a high level of agreement between trials for both sensor systems, it was found that the Ambulosono sensor system outperformed the iPod-based system in some respects. The Ambulosono sensor system possessed both reliability and accuracy in obtaining gait parameter measurements, which suggests it can serve as an economical alternative to the iPod-based system that is currently used in various clinical rehabilitation programs.
基于可穿戴技术的测量系统在各种慢性病患者的治疗和康复管理方面具有潜力。本研究旨在评估一种名为 Ambulosono 的新一代基于可穿戴传感器系统在生物反馈训练中的准确性和测试⁻再测试可靠性。Ambulosono 传感器系统通过将其功能与 iPod touch（第 4 代）传感器系统进行交叉验证来进行验证。15 名参与者进行了步态测试，同时佩戴基于 iPod 和 Ambulosono 的传感器来测量各种步态参数。然后，使用相同的计算算法，将实际测量值（即真实值）与通过两个传感器系统获得的步长、行进距离、速度和步频进行比较。虽然所有测量参数的平均百分比误差均<10%，并且两个传感器系统的组内相关系数显示出试验之间具有高度一致性，但发现 Ambulosono 传感器系统在某些方面优于基于 iPod 的系统。Ambulosono 传感器系统在获取步态参数测量方面具有可靠性和准确性，这表明它可以作为目前在各种临床康复计划中使用的基于 iPod 的系统的经济替代方案。
