Shin Jae Hyuk, Park Kwang Suk
Interdisciplinary Program of Biomedical Engineering, Seoul National University, Korea.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:3789-92. doi: 10.1109/EMBC.2012.6346792.
Using the Ballistocardiogram(BCG) measured on weighing scale, heart rate variability(HRV) and blood pressure were estimated. BCG was measured while subjects were on weighing scale in resting state and under the Valsalva maneuver and static exercise condition to induce the change in cardiac autonomic rhythm. Time domain, frequency domain and nonlinear HRV parameters were estimated from the measured BCG and compared with the ones calculated from ECG measured simultaneously. For blood pressure(BP) estimation, ECG was measured additionally on the feet using dry electrodes simultaneously installed on weighing scale and R-J intervals were extracted as a BP correlated parameter at every beat cycle. HRV estimation results shows the correlation higher than 0.97, and the estimated BP was similar to the measured BP with a reliable correlations.
使用在体重秤上测量的心冲击图（BCG）来估计心率变异性（HRV）和血压。在受试者处于静止状态、瓦尔萨尔瓦动作和静态运动条件下站在体重秤上时测量BCG，以诱发心脏自主节律的变化。从测量的BCG中估计时域、频域和非线性HRV参数，并与同时测量的心电图计算得到的参数进行比较。为了估计血压（BP），使用同时安装在体重秤上的干电极在足部额外测量心电图，并在每个心动周期提取R-J间期作为与BP相关的参数。HRV估计结果显示相关性高于0.97，估计的BP与测量的BP相似，具有可靠的相关性。
