EFFECTS OF HEART RATE VARIABILITY (HRV) BIOFEEDBACK TRAINING ON HRV AND COHERENCE IN SOCIALLY ACTIVE ELDERLY

Heart rate variability (HRV) biofeedback is a noninvasive technique that involves respiratory rate modification (increase in amplitude and decrease in frequency) to increase the coherence between the respiratory rate and heart rate and to increase HRV. The reduction of HRV is associated with age and loneliness. However, it is unknown if HRV biofeedback is efficient in increasing HRV and coherence in lonely elderly individuals.