Search Results
Results 501 - 550 of 883
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Anderssen S - - 1995
The purpose of this study was to investigate the effect of 1-year diet intervention, exercise intervention and both combined on blood pressure (BP) in normotensives and mild hypertensives. Two hundred and nineteen sedentary middle aged men and women with slightly deranged coronary heart disease (CHD) risk factors were randomised to ...
Chong-pong Au T - - 1995
Measurement of signal to artifact ratio yielded optimal frequencies for a Korotkoff-based automatic system for measuring blood pressure on a treadmill. Maximal Korotkoff sounds occurred just above the crease of the elbow over the brachial artery. Output of a piezoelectric microphone and charge amplifier was measured during treadmill exercise for ...
Sagiv M - - 1995
Systolic and diastolic blood pressures were measured by intraarterial means and by auscultation. Comparisons were made with simultaneously determined intraarterial catheter and auscultation measurements. Five healthy males were measured at rest and during handgrip and deadlift isometric exercises, utilizing small and large muscle mass. The data suggest that indirect systolic ...
Chen Y - - 1995
Dynamic exercise may be used as a safe, therapeutic approach to reduce sympathetic nerve activity at rest and thus may be beneficial for individuals with hypertension. Therefore, we tested the hypothesis that a single bout of mild to moderate dynamic exercise would decrease cardiac sympathetic tonus at rest. We designed ...
Moreno Júnior H - - 1995
Intense physical training through isotonic exercises has controversial effects in individuals with moderate to severe hypertension. In this study, normotensive Wistar rats and rats with renovascular hypertension (Goldblatt II) were subjected to intense physical exercise involving two 50-min swimming sessions per day for a period of 12 weeks. At the ...
Beck D - - 1995
Isometric exercise raises systemic arterial pressure and simultaneously lowers intraocular pressure. Together, these pressor effects increase calculated ocular perfusion pressure and test the capacity for flow and pressure autoregulation in the orbital circulation. We investigated in 17 young, healthy subjects the effect of isometric exercise on ophthalmic arterial hemodynamics, as ...
Gwirtz P A - - 1995
BACKGROUND: A coronary alpha 1-adrenergic constrictor tone exists under conditions associated with increased sympathetic stimulation but not during resting conditions in the normal heart. During renovascular hypertension, elevated circulating angiotensin II may enhance sympathetic stimulation of the heart, even at rest. This study tested the hypothesis that an alpha 1-adrenergic ...
Gordon R D - - 1995
The effects on blood pressure (BP) and heart rate (HR), at rest and during bicycle exercise, of the vascular selective calcium antagonist felodipine, the cardio-selective beta-blocker metoprolol, and of the two drugs in combination, were assessed in a double-blind, three-way cross-over study comprising 23 patients with essential, mild to moderate ...
Velasco M - - 1995
Fourteen subjects (normotensive, hypertensive) were studied at the Vargas Hospital of Caracas. They were treated with placebo (2 periods), domperidone, a peripheral dopaminergic blocker, at the daily oral dose of 40 mg, and metoclopramide, a central and peripheral dopaminergic blocker, at the daily oral dose of 40 mg. All placebo ...
Seo H - - 1995
To evaluate the determinants of exercise capacity in the hypertensive elderly with an assessment of cardiac reserve by dipyridamole radionuclide angiography, 31 elderly subjects (aged 62 to 78 years, 15 hypertensive and 16 normotensive) underwent symptom-limited maximum treadmill exercise with measurement of maximal oxygen consumption along with radionuclide angiography in ...
Watson W J - - 1995
Ninety-seven primigravid patients were prospectively studied to assess the predictive value of the pressor response to aerobic exercise as a screening test for preeclampsia. The blood pressure response to cycle ergometry exercise to a maternal pulse of 140 beats/min was recorded on each subject. Each subject was studied in the ...
Clyne N - - 1995
Recombinant human erythropoietin (EPO) therapy in uremic patients raises the hematocrit (Hct) and increases physical exercise capacity (1,2) and quality of life (1). In general, partial correction of anemia to subnormal levels in uremic patients has proven to be safe with few serious adverse effects apart from hypertension (3). Ever ...
Olsson J - - 1995
We evaluated signs and symptoms of the transurethral resection syndrome recorded during and after 273 transurethral prostatic resections performed at 2 hospitals between 1984 and 1993. Glycine solution was used as the irrigant and ethanol served as a tracer for fluid absorption. The incidence and severity of symptoms that could ...
Boezaart A P - - 1995
The purpose of this study was to compare surgical conditions for functional endoscopic sinus surgery (FESS) under general anaesthesia during controlled induced hypotension, using either sodium nitroprusside (SNP) or esmolol. Twenty patients, assigned to receive either of the drugs as the primary hypotensive agent, were studied. The same surgeon, blinded ...
Narloch J A - - 1995
Arterial hypertension occurring during heavy resistance exercise may be a risk factor for stroke in healthy young adults. Any training method that ameliorates the pressor effect of exercise should reduce the risk of stroke. The objective of this study was to observe the influence of breathing technique on arterial blood ...
Lacourcière Y - - 1995
We compared the antihypertensive activity of DL- and D-nebivolol in patients with essential hypertension on clinic and 24-h ambulatory blood pressure (BP) and during dynamic exercise as well. After a 4-week placebo run-in period, 30 patients (mean age 48 years) were randomly allocated to double-blind treatment with either DL-nebivolol 5 ...
Rey C - - 1995
BACKGROUND: The role of the kidney in the development of essential hypertension is subject of debate. METHODS: We compared the renin, kallikrein and prostaglandin renal systems in two groups of normotensive boys, aged 7-16 years, with different degrees of risk for future hypertension: 27 had parents with essential hypertension and ...
Hara K - - 1995
OBJECTIVE: To determine the effects of prior exercise and naloxone on haemodynamics, muscle sympathetic nerve activity, pituitary hormones and ambulatory blood pressure. METHODS: We studied 14 mild hypertensive and 14 normotensive subjects on two days. After baseline measurements, subjects were randomly allocated to vehicle or naloxone (0.4 mg/kg) 30 min ...
Smith G D - - 1995
The effect of supine exercise on blood pressure (BP), measured while recumbent and after head-up postural change, was investigated in three groups with marked postural hypotension due to chronic autonomic failure: 15 with associated neurological impairment (Shy-Drager syndrome, SDS, multiple system atrophy); 15 with pure autonomic failure (PAF) and two ...
Engvall J - - 1995
OBJECTIVE: To evaluate the difference in systolic blood pressure at the arm and ankle at rest and after various exercise tests for the assessment of aortic coarctation. METHODS: 22 patients (mean age 33 years, range 17-66) were investigated on the suspicion of having haemodynamically significant aortic coarctation. Eight had undergone ...
Jennings G L - - 1995
1. Regular aerobic exercise causes cardiovascular, neural, humoral and metabolic changes. Many of these are likely to influence cardiovascular risk and the changes vary according to the level and duration of increased physical activity. 2. The case for exercise exerting beneficial effects derives from epidemiological data showing that sedentary subjects ...
Palatini P - - 1995
Debate continues on whether left ventricular (LV) systolic function during exercise is abnormal in young subjects with mild hypertension and on whether the abnormal blood pressure (BP) trend observed in hypertensives during prolonged exercise is due to impaired LV function. LV function was measured by means of M-mode echocardiography during ...
Lawler J E - - 1995
In this study we sought to assess the role of exercise training on blood pressure (BP) reactivity to tailshock stress in rats with varying family histories of hypertension. Exercise training consisted of swimming 90 min per day in isothermic water for either 2, 6, or 10 months, beginning at 2 ...
Panfilov V - - 1995
The aim of the present study was to compare the effects of rilmenidine (1-2 mg/day) and atenolol (50-100 mg/day) on tests of mental arithmetic, bicycle exercise, and autonomic function. Twelve male patients with mild-to-moderate hypertension (blood pressure, 160/95 +/- 15/7 mm Hg; age range, 32 to 60 years) completed a ...
Clorius J H - - 1995
BACKGROUND: Hypertensives may develop bilateral trapping of para-aminohippurate analogues in the tissue of the kidneys during light exercise, as can be demonstrated using radioactively labelled [131I]-hippurate or [99mTc]-mercaptoacetyl-triglycine. Tracer accumulation in the kidneys during exercise results in a typical renographic pattern, the bilateral-abnormal exercise renogram. The disturbance is common during ...
Kaluza G - - 1995
In this study, the effects of a training in relaxation and visual imagery on the intra-ocular pressure (IOP) of patients with primary open-angle glaucoma were investigated. Twenty-three patients, aged 24-69 years, were assigned either to a training group or to a waiting-list control group. The intervention included a basic programme ...
Arroll B - - 1994
OBJECTIVE: To investigate the effect on blood pressure for 10-min compared with 40-min episodes of physical activity for 4 days. DESIGN AND METHODS: The design used a randomized crossover trial of two exercise episode durations, involving 17 subjects, which were performed in a university setting. The intervention was exercise on ...
King M L - - 1994
STUDY OBJECTIVE: To assess blood pressure (BP) response to continuous maximal arm ergometry in patients with spinal cord injury (SCI). DESIGN: Cross-sectional analysis of data collected for a prospective study of functional electrical stimulation in patients with SCI. SETTING: Short-term rehabilitation hospital. PARTICIPANTS: Twenty individuals with SCI; 4 cervical (C6 ...
Braun L T - - 1994
OBJECTIVE: To determine the relationship between exercise blood pressure (BP) and catecholamine levels in hypertensive subjects and, secondarily, to evaluate the influence of age and fitness level. DESIGN: Descriptive correlational. SETTING: Midwestern, university-affiliated medical center. SUBJECTS: 27 hypertensive subjects, mean age 45 years, who were free of antihypertensive medications. OUTCOME ...
Tomoda S - - 1994
The purpose of this study is to evaluate an isometric exercise (Hand-Grip test) as a method to predict pregnancy-induced hypertension (PIH). One hundred and twenty-five pregnant women were given the Hand-Grip (HG) test before the 15th gestational week. The Hand-Grip test was rated positive when the systolic blood pressure increased ...
Golden A L - - 1994
Hypertrophy in hypertensive hearts is associated with increased risk of cardiac morbidity and mortality that is not characteristic of exercised hearts. This study was done to determine whether exercise training of normotensive and borderline hypertensive rats induces the increased myocardial expression of BB and MB isoforms of creatine kinase (CK) ...
Jimenez A H - - 1994
The increased morning frequency of cardiovascular disease onset has created concern that morning exertion promotes greater risk than evening exertion. The physiologic responses to isometric exercise (handgrip) in the morning (9 A.M.) versus the evening (6:30 P.M.) were compared in 15 subjects with mild hypertension. Isometric exercise produced similar increases ...
Miura S - - 1994
OBJECTIVE: To determine whether the renal kallikrein-kinin and dopamine systems participate in lowering blood pressure during mild exercise in hypertensives. DESIGN: After a general clinical observation period of 4 weeks, 27 essential hypertensives were divided into two groups. The exercise group underwent blood lactate threshold exercise, using a cycle ergometer ...
Tomten S E - - 1994
The effect of alpha 1-adrenoceptor blockade (doxazosin, 4 mg daily) on maximal VO2 and physical endurance capacity in 16 mildly hypertensive, athletic men was investigated in a randomized, placebo-controlled, double-blind, two-period of 4 weeks, cross-over study. The maximal workload obtained during graded bicycle ergometer exercise and the corresponding maximal VO2 ...
Fortini A - - 1994
This study evaluated the effects of medium-term once daily administration of fosinopril (20 mg) on BP profile and on BP response to exercise in patients with mild to moderate hypertension. Twenty patients (14 males and 6 females; 25-57 years of age), after a six week drug wash-out phase, underwent 24h ...
Modesti P A - - 1994
An impaired maximal vasodilating capacity has been reported in hypertensives. This study aimed to assess whether mild hypertensives depend on anaerobic metabolism more than do normal subjects during the exercise stress test. The oxygen uptake (VO2) and carbon dioxide output (VCO2) were measured at the anaerobic threshold (AT) and at ...
Scarpace N T - - 1994
Both aging and exercise are associated with alterations in regulation of catecholamines. With aging, elevated circulating catecholamines at rest and after stress may result in increased sympathetic nervous system activity. The ability of the catecholaminergic system of older subjects to respond and adapt to environmental challenges is altered during aging. ...
Modesti P A - - 1994
A reduction of functional capacity has been reported in severe hypertension. However, the reduced peripheral vasodilation observed in the early stages of hypertension, could also impair the blood supply to exercising muscles in mild hypertensives presenting a normal left ventricular mass. In this paper the cardiopulmonary exercise capacity of early ...
Dubbert P M - - 1994
The effects of a ten week endurance exercise training programme on blood pressure and associated metabolic and quality of life variables were examined in 28 unmedicated mildly hypertensive men (21-54 years of age). At baseline, BP averaged 138.8/94.8 mmHg, body mass index averaged 27.9 and percentage body fat averaged 29%. ...
Arita M - - 1994
1. This study was carried out to evaluate the effect of temocapril on haemodynamic and humoral responses to exercise in nine patients with mild essential hypertension (WHO stages I and II). 2. After a 4-week placebo period, temocapril was administered at a dose of 1.0 mg once daily for 2-4 ...
Farnsworth T A - - 1994
A total of 15 elderly patients recovering from stroke were included in a random, observer-blind, crossover trial to investigate the effects of postprandial cardiovascular changes. Exercise capability, sitting and erect blood pressure and heart rate were recorded pre- and postprandially; a control group received water only. Exercise capability decreased significantly ...
Lewis S E - - 1994
The cardiovascular effects were compared of levobunolol 0.25% ophthalmic solution, betaxolol 0.25% ophthalmic suspension, and placebo in a randomized, double-masked, three-period, crossover study of 19 healthy, elderly (age, >60 years) volunteers at rest and during constant-speed treadmill exercise (2.7 mi/h at 10% grade) performed 30 min after dosing. Resting measurements ...
Bulbulian R - - 1994
Cardiovascular responses to moderate steady state exercise were studied in type A females. Twenty-one women, ages 18 to 43 years (mean 29.7 +/- 2.0), were divided into type A (n = 11) and type B (n = 10) groups by means of the Jenkins Activity Survey (JAS). Baseline measurement included ...
Kenney M J - - 1993
Recent investigations have demonstrated that there is a sustained reduction in arterial blood pressure after a single bout of exercise, ie, postexercise hypotension (PEH). The purpose of this discussion is to integrate the available information on this topic and to review studies using sustained stimulation of somatic afferents in experimental ...
Tashiro E - - 1993
1. The relationship between work-rate and the antihypertensive effect of exercise in hypertensives, and the mechanism of that effect, were investigated by a crossover clinical trial. 2. Ten mild hypertensives were randomly divided into two groups. One group performed low work-rate exercise (LWE) on a cycle ergometer for 10 weeks ...
Arakawa K - - 1993
A sedentary lifestyle may be a risk for hypertension, according to the results of both cross sectional and longitudinal studies. However, exercise may reverse the adverse effects of lack of activity. Many controlled studies have shown that exercise lowers systolic/diastolic blood pressure by at least 10/5 mmHg. Exercise not only ...
Beaulieu M - - 1993
1. Much attention has been given to the effects of various classes of antihypertensive drugs on blood pressure and haemodynamics. The effects of a single bout of exercise on post-exercise blood pressure have also been studied by several investigators. However, the combined effects of prior exercise and antihypertensive medication has ...
Zhao S - - 1993
This study found that pigs in the early stages of perinephritic hypertension had enhanced plasma norepinephrine (NE) and heart rate (HR) responses to behaviorally arousing stimuli (lifting in a canvas sling) and exercise. In the hypertensive animals, the increase in plasma NE in response to behavioral arousal caused by lifting ...
- - 1993
Hypertension is present in epidemic proportions in adults of industrialized societies and is associated with a markedly increased risk of developing numerous cardiovascular pathologies. There is a continuing debate as to the efficacy of aggressive pharmacological therapy in individuals with mild to moderate elevations in blood pressure. This has led ...
Saito T - - 1993
To investigate the involvement of the sympathetic nervous system and cell membrane sodium transport in hypertensive cardiac hypertrophy, we divided 51 middle-aged male patients with essential hypertension into cardiac hypertrophy and noncardiac hypertrophy groups. We then compared the plasma noradrenaline concentration after exercise, the cardiovascular response to exercise and sympathomimetic ...
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