Resting-State Heart Rate Variability Presages EEG Oscillatory Activity in Senior Adults During Cycling Exercise

EEG, ECG and EMG signals were recorded during 3 stages of cycling exercise in 38 senior adults. Before and after the cycling stages, 5-min resting-state EEG and ECG signals were also recorded in individual subjects. Resting-state EEG oscillatory activity was the best predictor of oscillatory activity during cycling exercise. In addition, resting-state ECG entropy and subjects' weights were also significant predictors of oscillatory activity during cycling exercise especially in the high frequency ranges. Senior females with lower weights and higher resting-state ECG entropy values showed stronger oscillatory activity in all frequency ranges during cycling exercise and weaker oscillatory activity under resting-states compared with other subjects. We conclude that cycling exercise has the potential to reduce frailty in senior adults especially in those who have higher resting-state ECG entropy values.