... from BRSvagal inc (BRS_vagal derived from the rise in BP during phases III–IV of the Valsalva manoeuvre), to assess the association between BRSvagal inc and BRSvagal dec (BRS_vagal derived from the preceeding BP decrement) and to validate BRSvagal inc as an index of autonomic function. We studied...

... and 30 age-, sex- and blood pressure-matched control subjects underwent traditional tests of autonomic function. Resting supine R—R interval and systolic blood pressure variability were assessed using spectral analysis methods. In addition, we assessed the baroreceptor—cardiac reflex from the linear...

...D. Heseltine; J. F. Potter; G. Hartley; I. A. MacDonald; O. F. W. James 1. The responses of blood pressure, heart rate, autonomic function and plasma insulin to a high carbohydrate and a high fat meal of equivalent energy value were studied in nine young volunteers. 2. Neither meal produced...

...J. F. Potter; D. Heseltine; G. Hartley; J. Matthews; I. A. Macdonald; O. F. W. James 1. The effects of four meals of similar energy, but different nutritional, composition on postprandial blood pressure, heart rate, autonomic function, catecholamines, insulin and packed cell volume levels were...

.... Normal ranges were calculated from regression analysis of these relationships. 5. It is concluded that the technique described can be used to test cardiac autonomic function at the bedside. 8 4 1981 13 4 1981 © 1981 The Biochemical Society and the Medical Research Society 1981...