Reduced heart rate variability and vagal tone in anxiety: trait versus state, and the effects of autogenic training
AC Miu, RM Heilman, M Miclea�- Autonomic Neuroscience, 2009 - Elsevier
This study investigated heart rate variability (HRV) in healthy volunteers that were selected
for extreme scores of trait anxiety (TA), during two opposite psychophysiological conditions
of mental stress, and relaxation induced by autogenic training. R–R intervals, HF and LF
powers, and LF/HF ratios were derived from short-term electrocardiographic recordings
made during mental stress and relaxation by autogenic training, with respiratory rate and
skin conductance being controlled for in all the analyses. The main finding was that high TA�…
for extreme scores of trait anxiety (TA), during two opposite psychophysiological conditions
of mental stress, and relaxation induced by autogenic training. R–R intervals, HF and LF
powers, and LF/HF ratios were derived from short-term electrocardiographic recordings
made during mental stress and relaxation by autogenic training, with respiratory rate and
skin conductance being controlled for in all the analyses. The main finding was that high TA�…