Relationship Between Measurement Site and Motion Artifacts in Wearable Reflected Photoplethysmography
Relationship Between Measurement Site and Motion Artifacts in Wearable Reflected Photoplethysmography
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DOI：
10.1007/s10916-010-9505-0
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发表时间：
2011-10-01
影响因子：
5.3
通讯作者：
Tamura, Toshiyo
中科院分区：
文献类型：
--
作者：
Maeda, Yuka;Sekine, Masaki;Tamura, Toshiyo
从可穿戴光电体积描记（PPG）传感器获得的脉搏率对于监测心血管状况是重要的，特别是在运动期间。然而，由于PPG对身体运动敏感，因此难以在运动期间精确计数脉搏率。除了脉动变化之外，身体运动的伪影还由测量部位的血容量变化引起。在这里，我们研究了运动伪影的影响，相对于光源和解剖部位。在这项研究中，我们比较了信号从绿光PPG红外PPG在不同的解剖部位。在这些实验中，11名受试者被要求采取休息姿势或通过跳跃和摆动手臂产生自发运动伪影。结果，从绿光PPG获得的脉搏率与ECG R-R间期的相关性高于红外线。此外，上臂的信号比外周信号显示更少的伪影。因此，绿光PPG可以用于脉搏率监测。
Pulse rates obtained from wearable photoplethysmography (PPG) sensors are important for monitoring cardiovascular condition, especially during exercise. However, it is difficult to precisely count pulse rates during exercise because PPG is sensitive to body movement. The artifacts from body movement are caused by a change in the blood volume at the measurement site, in addition to pulsatile changes. Here, we investigated the influence of motion artifact with respect to light source and anatomical sites. In this study, we compared the signal from green-light PPG to that from infrared PPG at different anatomical sites. In these experiments, 11 subjects were asked to either assume a resting position or generate spontaneous motion artifact by jumping and swinging their arm. As a result, pulse rates obtained from green-light PPG showed a higher correlation with the ECG R-R interval as compared to those obtained with infrared. Additionally, the signal from the upper arm showed less artifact than did the peripheral one. Therefore, the green-light PPG may be useful for pulse rate monitoring.