Inhalation/exhalation ratio modulates the effect of slow breathing on heart rate variability and relaxation
Van Diest I, Verstappen K, Aubert AE, Widjaja D, Vansteenwegen D, Vlemincx E. Inhalation/Exhalation ratio modulates the effect of slow breathing on heart rate variability and relaxation. Appl Psychophysiol Biofeedback. 2014;39(3-4):171-180. doi:10.1007/s10484-014-9253-x