Venous Occlusion Plethysmography
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Physical fitness and activity, metabolic profile, adipokines and endothelial function in children
Resumo: Objetivos: A prevalência da obesidade está aumentando. O objetivo deste estudo foi investigar se há disfunção endotelial nas crianças com peso normal ou excesso de peso e se o perfil metabólico, as adipocinas e a disfunção endotelial seriam mais fortemente associados à aptidão física ou aos níveis de atividade física. Método: Estudo
J. Pediatr. (Rio J.). Publicado em: 28/10/2019
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2. Estudo das alterações microcirculatórias na população idosa comparadas com adultos jovens / Study of microcirculatory changes in the elderly compared with young adults
O envelhecimento populacional é um fenômeno mundial, assim como o predomínio de mortes por doenças cardiovasculares. Estudos demonstram que o envelhecimento acarreta aumento da rigidez vascular e perturbações na reatividade macrovascular. O presente estudo comparou a microcirculação deste processo com adultos jovens através da pletismografia de oclu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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3. Impaired hemodynamic response to mental stress in subjects with prehypertension is improved after a single bout of maximal dynamic exercise
INTRODUCTION: High blood pressure during mental stress in subjects with prehypertension is associated with blunted vasodilation in skeletal muscles, which might be improved by an acute bout of exercise. OBJECTIVE: To investigate the hemodynamic responses to mental stress before and after a bout of exercise in subjects with prehypertension. METHOD: Eighteen s
Clinics. Publicado em: 2011
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4. Capacidade física e o metaborreflexo em pacientes obesos mórbidos com síndrome da apneia obstrutiva do sono / Physical capacity and metaborreflex of peripheral muscle in morbidy obese patients with syndrome of obstructive sleep apnea
Previous studies have shown that obese individuals with syndrome of obstructive sleep apnea (OSA) present attenuated skeletal muscle metaborreflex. Muscle blood flow (MBF) evaluated by venous occlusion plethysmography has been used as marker of neurovascular control. In the present study, exercise capacity was measured by the distance performed in the six-mi
Publicado em: 2008
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5. Effects of exercise training on neurovascular control in heart failure patients treated with Carvedilol / Efeito do treinamento físico no controle neurovascular e capacidade funcional em pacientes com insuficiência cardíaca em uso de carvedilol
Evidence suggests that carvedilol decreases muscle sympathetic nerve activity (MSNA) in patients with heart failure(HF) but carvedilol fails to improve forearm vascular resistance and overall functional capacity. Exercise training in HF reduces MSNA and improves forearm vascular resistance and functional capacity. The aim of study was to investigate whether
Publicado em: 2008
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6. Effects of diet and exercise training on neurovascular control during mental stress in obese women
Since neurovascular control is altered in obese subjects, we hypothesized that weight loss by diet (D) or diet plus exercise training (D + ET) would improve neurovascular control during mental stress in obese women. In a study with a dietary reduction of 600 kcal/day with or without exercise training for 4 months, 53 obese women were subdivided in D (N = 22,
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-01
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7. Subacute effects of a maximal exercise bout on endothelium-mediated vasodilation in healthy subjects
We evaluated vascular reactivity after a maximal exercise test in order to determine whether the effect of exercise on the circulation persists even after interruption of the exercise. Eleven healthy sedentary volunteers (six women, age 28 ± 5 years) were evaluated before and after (10, 60, and 120 min) a maximal exercise test on a treadmill. Forearm blood
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-04
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8. Muscle sympathetic nerve activity and hemodynamic alterations in middle-aged obese women
To study the relationship between the sympathetic nerve activity and hemodynamic alterations in obesity, we simultaneously measured muscle sympathetic nerve activity (MSNA), blood pressure, and forearm blood flow (FBF) in obese and lean individuals. Fifteen normotensive obese women (BMI = 32.5 ± 0.5 kg/m²) and 11 age-matched normotensive lean women (BMI =
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-04
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9. Determinação do fluxo arterial com o auxilio da pneumopletismografia e da ultra-sonografia duplex : estudo experimental e em voluntarios
The evaluation of patients with arterial disease includes the determination of arterial flow in the lower limbs. In this study, we compared the usefulness of US-Duplex and plethysmography for assessing arterial blood flow and the possible causes of errar associated with these procedures. Methods: For experimental evaluation of the US-Duplex, we used a system
Publicado em: 1999
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10. The etiology of the Klippel-Trenaunay syndrome.
The etiology of the Klippel-Trenaunay syndrome (KTS) remains obscure. Although venous hypertension secondary to deep venous obstruction has been suggested as a cause, recent studies have demonstrated that most patients have unimpeded venous drainage. Calf blood flows have been measured in 33 patients with KTS using venous occlusion plethysmography. Although
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11. An evaluation of the plethysmographic method of measuring cranial blood flow in the new-born infant.
Cranial blood flow values obtained plethysmographically in the human new-born infant have been very variable and frequently very low. We have used a doppler ultrasound velocitymeter and skull compliance measurements to investigate whether the technique itself affects the cranial arterial inflow and whether the methods of calculation used introduce bias. Bloo
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12. Vascular responses in the hands of patients suffering from migraine
The response of the hand blood vessels to a measured, controlled cold stimulus was determined, using venous occlusion plethysmography, in normal subjects and patients who suffered from migraine. The resting level of hand blood flow was found to be higher in the patients, but the percentage fall in flow that resulted when the cold stimulus was applied was les