the aim of this study was to investigate the effect of three types of resistance training program on girls' physical fitness. 30 girls were divided into 3 groups: plyometric training with vascular occlusion (plo), plyometric training without vascular occlusion (pl) and power-resistance training (pr). training programs were conducted for six weeks. physical fitness tests were conducted befo...

In the dog kidney, acute increase and decrease in hydrogen ion concentration results in decrease and increase in renal vascular resistance respectively. These changes occur predominantly on the alkaline side of pH 7.3 and result from some direct effect upon vascular smooth muscle. The resistance changes are less apparent in nerve intact than nerve sectioned kidneys due to opposing effects media...

expiratory pressure; Phihigh airway pressure level with BiPAP; Plolow airway pressure level with BiPAP; PSVpressure support ventilation; PVRlpulmonary vascular resistance index; RVEDVright ventricular enddiastolic volume; RVEFright ventricular ejection fraction; RVESVright ventricular end-systolic volume; RVPSPright ventricular peak systolic pressure; RVSV right ventricular stroke volume; RVSWI...

• Previous investigations have described areas in the circulation which, when appropriately stimulated, induce changes in total peripheral vascular resistance." Such receptor areas have been demonstrated in vessels of the lesser and greater circulation and three of the heart chambers. Whether similar vascular reflexes can originate in the right ventricle has been questioned. Although increasing...

Hyperinsulinemia may contribute to the development of hypertension. The aim of the present study was to determine whether hyperinsulinemia modulates vascular reactivity to phenylephrine or angiotensin II. In 10 young, healthy volunteers, the left brachial artery was cannulated for drug infusion and direct measurements of arterial pressure. We measured forearm blood flow by a strain-gauge plethy...

It has been shown that sustained insulin infusion causes an increase in sympathetic vasoconstrictor discharge but, despite this, also causes peripheral vasodilatation. The present study was designed to determine in healthy subjects the effect of ingestion of a carbohydrate meal, with its attendant physiological insulinaemia, on vascular resistance in and sympathetic vasoconstrictor discharge to...

BACKGROUND Mitral valve stenosis is often associated with increased pulmonary vascular resistance resulting in pulmonary hypertension, which may lead to or exacerbate right heart dysfunction. Hypocapnia is a known pulmonary vasodilator. The purpose of this study was to evaluate whether induced hypocapnia is an effective treatment for pulmonary hypertension following elective mitral valve replac...

After repair of a Bochdalek diaphragmatic hernia, shunting of blood away from the lungs produced progressive hypoxaemia in a neonate. Changes in plasma concentrations of the vasoconstrictor prostanoid thromboxane were associated with changes in pulmonary vascular resistance in this infant. Plasma concentrations of the vasodilator prostanoid prostacyclin were also monitored during acute changes ...

We previously reported a relationship between forearm resistance vessel function and global neuropsychological performance in patients with atherosclerotic vascular disease (AVD). This study was conducted to determine the relationships among vascular smooth muscle function, endothelial function, and initiation and processing speed in this sample. Participants were 80 individuals with AVD. Resis...

Pulmonary hypertension (PH) is mean pulmonary arterial pressure above 25 mmHg at rest. Although considered a rare disease, the prevalence of PH in certain risk groups is higher, from 0.5% in patients with HIV infection to 30% in congenital heart disease (CHD) associating PH. In pulmonary arterial hypertension (PAH) associated with CHD, early changes of the vascular bed are reversible after corr...