Impedance Imaging Research Center (IIRC), Kyung Hee University, Seoul 02447, Korea.
Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul 03080, Korea.
Sensors (Basel). 2019 Jan 9;19(2):223. doi: 10.3390/s19020223.
Stooping is a posture which is described as an involuntary forward bending of the thoracolumbar spine. Conventionally, the stooped posture (SP) in Parkinson's disease patients is measured in static or limited movement conditions using a radiological or optoelectronic system. In the dynamic condition with long movement distance, there was no effective method in preference to the empirical assessment from doctors. In this research, we proposed a practical method for estimating the SP with a high accuracy where accelerometers can be mounted on the neck or upper back as a wearable sensor. The experiments with simulated subjects showed a high correlation of 0.96 and 0.99 between the estimated SP angle and the reference angles for neck and back sensor position, respectively. The maximum absolute error (0.9 and 1.5 degrees) indicated that the system can be used, not only in clinical assessment as a measurement, but also in daily life as a corrector.
弯腰是一种不由自主的胸腰椎向前弯曲的姿势。传统上，帕金森病患者的弯腰姿势（SP）是在静态或有限运动条件下使用放射学或光电系统进行测量的。在运动距离较长的动态条件下，除了医生的经验评估外，没有有效的方法。在这项研究中，我们提出了一种使用加速度计作为可穿戴传感器安装在颈部或上背部来估计 SP 的实用方法。模拟受试者的实验表明，颈部和背部传感器位置的估计 SP 角度与参考角度之间的相关性分别高达 0.96 和 0.99。最大绝对误差（0.9 和 1.5 度）表明该系统不仅可用于临床评估作为测量，也可用于日常生活作为校正器。
