直立时身体摇动的检测及其在人体平衡能力评价方面的应用

Measurement of Postural Sway on Upright Stance and Postural Stability Evaluation

利用摄像仪检测人体直立时的身体摇动并对人体平衡能力进行评估。用摄像仪连续拍摄被检者直立时的背部标志,通过计算机获得标志的运动轨迹,计算出身体的摇动曲线,并与重心摇动仪的检查结果进行比较。检测22位健康成人身体冠状面相当于一米高度的平均摇动速度(TSS)在开、闭眼时分别为(3.40±0.98)mm/s和(4.70±1.47)mm/s。重心摇动检查开眼时的轨迹长(LNG)为(12.57±3.39)mm/s,闭眼时为(20.50±5.88)mm/s。TSS与LNG间的相关系数在开眼时为0.6321,闭眼时为0.6841,呈中度相关。利用CCD摄像仪可以精确测定站立时的身体摇动;TSS值可以代替LNG用于人体平衡能力的评估。

To establish a CCD video camera system that record postural sway directly and evaluate the postural stability.The video camera system recorded subjects′ mark on upper back,with an analyzing software to figure out it and described postural stability.The results of postural sway were compared with the results from COP examination.The averaged TSS of 22 subjects at a high of 1 meter from the ground was（3.40±0.98） mm/s in eyes open and（4.70±1.47） mm/s in eyes′ closed.Linear length of locus（LNG） was（12.57±3.39） mm/s in eyes′ open,（20.50±5.88） mm/s in eyes′ closed.The correlation coefficient between TSS and LNG was 0.6321 in eyes′ open,0.6841 in eyes′ closed.TSS showed moderate correlated with LNG.The CCD video camera system is suitable for postural stability measurement especially used the index of TSS and may become a prospective method for human beings balance ability evaluation.