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[Effects of isometric exercise (handgrip) on the systolic times of patients with essential arterial hypertension. A polygraphic study].

The modifications of systolic times during isometric exercise (hand-grip) are evaluated in a group of patients with essential hypertension. In these patients the hand-grip showed a reduction of the PEP, ICT and LVET: the re-establishment of the basal values of the PEP, ICT and LVET, became in variable times and in different ways with regard to the modifications of the miocardial performance induced by hypertension, unlike normal patients, in whom that becomes normally during the period of recovery. Little modifications of the PEP/LVET ratio, are observed in all patients and this ratio is like that observed toward blood-pressure during exercise. Blood-pressure, like heart rate, increased suddenly during exercise and returned on the basal values during the recovery, normally both in the control group and in patients with hypertension arised recently; more slowly and incompletely in patients with hypertension arised long before. The Authors related this fact to the adjustment alterations of the blood pressure.