... blood volume frequency domain power spectral analysis sympathetic activity systolic pressure variation Clinical Science (2003) 105, 491 497 (Printed in Great Britain) 491 Respiratory-related arterial pressure variability as an indicator of graded blood loss: involvement of the autonomic nervous...

... on cardiac baroreflex sensitivity, as determined by power spectral analysis (α index), in a large population of healthy subjects. We also compared the α indexes determined by power spectral analysis with cardiac baroreflex sensitivity measured by the phenylephrine method (BS phen ). We studied 142 subjects...

... Research Society © 1999 1999 blood pressure monitoring blood pressure variability non-invasive blood pressure measurement Portapres power spectral analysis 129Clinical Science (1999) 97, 129 139 (Printed in Great Britain) Broad-band spectral analysis of 24 h continuous finger blood pressure...

... the presence of sympathetic hyperactivity in hypertension associated with anxiety symptoms. 2. Neuroautonomic cardiovascular control was evaluated using short-time power spectral analysis of RR and arterial pressure variability at baseline and after the head-up tilt test. The two spectral components...

... that autonomic abnormalities are likely to develop at an older age. 5 1 1998 28 1 1998 © 1998 The Biochemical Society and the Medical Research Society 1998 adolescents autonomic neuropathy baroreflex sensitivity cardiovascular reflexes heart rate variability power spectral analysis...

... 1998 blood pressure chronic fatigue syndrome heart rate variability power spectral analysis psychosomatic distress Clinical Science (I 998) 94,57-63 (Printed in Great Britain) 57 Long- and short-term blood pressure and RR-interval variability and psychosomatic distress in chronic fatigue...