...Jacques Lenders; Harry Houben; Rudolf Van Valderen; Jacques Willemsen; Theo Thien 1. To determine the reproducibility of a mental arithmetic stress test and a handgrip exercise test, we studied the responses of blood pressure, heart rate, forearm blood flow and plasma catecholamines on two...

... levels were consistently higher in females and adrenaline levels higher in males. These sex-related differences were maintained after isometric exercise, mental arithmetic and cold pressor testing. 3. Resting noradrenaline concentration was negatively correlated with Quetelet index in males...

...P. Sleight; P. Fox; R. Lopez; D. E. Brooks 1. Baroreflex sensitivity was tested in three normal, three borderline and one hypertensive subject before and during mental arithmetic, the prolongation of pulse interval caused by a provoked rise in blood pressure being used as a measure of baroreflex...

...J. R. A. Rigg; E. M. Inman; N. A. Saunders; S. R. Leeder; N. L. Jones 1. The effect of mental arithmetic tasks on ventilation, breathing pattern, oxygen intake and carbon dioxide output was studied during air breathing and carbon dioxide rebreathing in healthy subjects. 2. Ventilation and breathing...

...G. Nyberg 1. Sustained hand-grip exercise and mental arithmetic were performed by normal and hypertensive subjects. Blood pressure and heart rate were recorded with a device which allows blind and unbiased measurements, based on the conventional cuff method. 2. Both stimuli caused increases...