说明：  The MIO sensor emitted the OHR signal at 1 Hz. The method for derivation of this OHR the raw PPG signal was not made public by the manufacturers. Heart rate was extracted offline the ECG data using a MATLAB implementation of Afonso et al. [5]. Outliers (heart rate N±30 of previous heart rate)were replaced by the average of the previous two heartbeats. Heart rate from