Tuomisto M T, Johnston D W, Schmidt T F
School of Psychology, University of St. Andrews, Scotland.
Psychophysiology. 1996 Jul;33(4):409-15. doi: 10.1111/j.1469-8986.1996.tb01066.x.
We compared the relative ability of continuous accelerometric, electromyographic (EMG), and hydrostatic posture measurements to discriminate tasks involving variations in motor activity and posture and to predict heart rate (HR) variability. EMG was a more sensitive measure than accelerometry in differentiating the tasks. However, accelerometry and EMG explained comparable amounts of HR variance. The hydrostatic posture was a stable measure that clearly differentiated postures and explained a significant amount of HR variance but less than accelerometry or EMG. Accelerometric and EMG measures of motor activity used either alone or in combination with the hydrostatic posture are valuable in discriminating activities and in controlling for the effects of motor activity and posture on HR during ambulatory measurement.
我们比较了连续加速度测量、肌电图（EMG）和流体静力姿势测量在区分涉及运动活动和姿势变化的任务以及预测心率（HR）变异性方面的相对能力。在区分任务方面，EMG比加速度测量更敏感。然而，加速度测量和EMG对HR方差的解释量相当。流体静力姿势是一种稳定的测量方法，能清晰区分不同姿势，并解释了相当数量的HR方差，但比加速度测量或EMG解释的少。在动态测量过程中，单独使用或与流体静力姿势结合使用的运动活动的加速度测量和EMG测量，在区分活动以及控制运动活动和姿势对HR的影响方面很有价值。
