A Comparative Analysis on Sensitive Indices of Electrocardiogram to Exercise Load
Li Yanjun
Yan Hong
Yu Xinming
Gong Guoqiang
Abstract：Objective To select the sensitive indices to exercise load from electrocardiogram (ECG) rhythm and waveform.Methods The exercise experiment included the baseline period (5 minutes' relaxation before exercise),the exercise period (20 minutes' exercise on bicycle ergometry),and the recovery period (5 minutes' relaxation after exercise).Four groups of subjects with ten in each group took part in the experiment,including the male junior,the female junior,the male senior and the female senior groups.The sensitive indices to exercise load were selected from 13 ECG indices,including four time domain indices of heart rate variability (HRV),four frequency domain indices of HRV,three indices of waveform similarity and two indices of high frequency noise.Results There were exercise-sensitive indices in HRV time and frequency domain indices,waveform similarity indices and high frequency noise indices,among which the R-R interval was the most sensitive in all four groups.Conclusion The R-R interval (heart rate) is a reliable index for exercise monitoring.Moreover,the ECG waveform similarity and noise level indices are useful for the evaluation of exercise load.
Keywords：electrocardiogram (ECG)exercise ECGexercise loadexercise-sensitive indicesheart rate variability
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)