Microneurography
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Sympatho-Vagal Imbalance is Associated with Sarcopenia in Male Patients with Heart Failure
Resumo Fundamento: Hiperatividade simpática de repouso e uma reativação parassimpática diminuída pós-exercício têm sido descritas em pacientes com insuficiência cardíaca (IC). No entanto, a associação dessas alterações autonômicas em pacientes com IC sarcopênicos ainda não são conhecidas. Objetivo: O objetivo deste estudo foi avaliar o im
Arq. Bras. Cardiol.. Publicado em: 08/04/2019
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2. Associação da disfunção diastólica de origem hipertensiva com a atividade simpática cardíaca e periférica / Association of diastolic dysfunction of hypertensive origin with cardiac and peripheral sympathetic activity
INTRODUÇÂO: A hipertensão arterial sistêmica (HAS) é uma condição clínica com alta prevalência, sendo considerada como o principal fator de risco modificável para o desenvolvimento de insuficiência cardíaca (IC). Dentre os mecanismos relacionados à progressão da HAS para a IC, a hiperatividade simpática e a disfunção endotelial devem ser con
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/08/2011
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3. Effects of estrogen replacement therapy in hemodinamic and neural responses to acute aerobic exercise in post-menopausal women / Efeitos isolados e associados da terapia de reposição oral estrogênica e do exercício físico aeróbico nas respostas hemodinâmicas e neurais em mulheres no período pós-menopausa
The post-menopause is marked by physiological hemodynamic and metabolic changes. The estrogen replacement therapy is a way to reduce the consequences of hormone deficiency and physical exercise contributes significantly to the reduction of cardiovascular risk. The aim of this study was to evaluate in post-menopausal women the isolated and associated effects
Publicado em: 2010
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4. Increased sympathetic activity in normotensive offspring of malignant hypertensive parents compared to offspring of normotensive parents
Malignant hypertension seems to be the consequence of very high blood pressure. Furthermore, an increase in sympathetic and renin-angiotensin system activity is considered to be the main mechanisms producing malignant hypertension. In the present study, 10 offspring of malignant hypertensive (OMH) parents (age 28 ± 5 years, 7 males, 3 females, 2 white and 8
Brazilian Journal of Medical and Biological Research. Publicado em: 30/09/2008
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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. Efeito do treinamento físico no controle barorreflexo da atividade nervosa simpática e freqüência cardíaca em indivíduos hipertensos / The effects of exercise training on baroreflex control of sympathetic nerve activity and heart rate in hypertensive patients
Previous studies demonstrated that exercise training improves the baroreflex control of heart rate in spontaneously hypertensive rats. However, the effects of exercise training on baroreflex control of sympathetic nerve activity and heart rate in patients with hypertension are unknown. We hypothesized that exercise training would improve baroreflex control o
Publicado em: 2007
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7. 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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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. Microneurography in relation to intraneural topography: somatotopic organisation of median nerve fascicles in humans.
Microneurography was performed in median nerve sensory fascicles with concentric needle electrodes and with conventional tungsten microneedles. The latter electrodes preferentially recorded activity from the myelinated fibres in the whole fascicle. By contrast, due to its special design, a concentric needle can record activity selectively from even a small p
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10. Elevated sympathetic nerve activity in patients with accelerated essential hypertension.
To determine if an abnormality exists in the sympathetic nervous system of patients with accelerated hypertension, we recorded muscle sympathetic nerve activity (MSNA) from the tibial nerve by microneurography in eight benign essential hypertensives and seven accelerated essential hypertensives. Basal MSNA, plasma renin activity, and plasma angiotensin II le
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11. Stretch sensitization of human muscle spindles.
1. Sixty-seven afferents from the finger extensor muscles were consecutively recorded by microneurography. 2. The units were classified as primary or secondary muscle spindle afferents or Golgi tendon organ afferents on the basis of their responses to ramp-and-hold stretches, sinusoidals superimposed on ramp-and-hold stretches, maximal twitch contractions an
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12. Peripheral projections of nociceptive unmyelinated axons in the human peroneal nerve.
1. Previous knowledge of the anatomical course of unmyelinated (C) axons along a peripheral nerve has been scarce and has led to the concept of the axons in a constantly interchanging position. 2. Results obtained by microneurography in the peroneal nerve at knee or ankle levels in awake humans demonstrated that the receptive fields of neighbouring C units i