Cardiorespiratory Responses
Mostrando 1-12 de 48 artigos, teses e dissertações.
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1. Autonomic and cardiorespiratory responses to the active tilt test in individuals with Parkinson disease: cross-sectional study
Resumo Antecedentes A doença de Parkinson (DP) está frequentemente associada a disfunções autonômicas. Porém, dados sobre a influência da DP nas respostas autonômicas às mudanças posturais são limitados. Objetivos Analisar e comparar as respostas autonômicas, avaliadas por métodos lineares e não lineares de variabilidade da frequência cardí
Arquivos de Neuro-Psiquiatria. Publicado em: 2022
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2. Speed and Grade Increment During Cardiopulmonary Treadmill Testing: Impact on Exercise Prescription
Abstract Background: Maximal oxygen uptake (VO2max) and both first (VT1) and second (VT2) thresholds have been used as reference points for exercise prescription in different populations. Objective: We aimed to test the hypothesis that exercise prescription, based on VTs determined by treadmill cardiopulmonary exercise testing (CPET), is influenced by the
Int. J. Cardiovasc. Sci.. Publicado em: 12/08/2019
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3. Cardiorespiratory and metabolic determinants during moderate and high resistance exercise intensities until exhaustion using dynamic leg press: comparison with critical load
The objective of this study was to assess cardiovascular, respiratory, and metabolic responses during a commonly used dynamic leg press resistance exercise until exhaustion (TEx) at different intensities and compare with critical load (CL). This was a prospective, cross-sectional, controlled, and crossover study. Twelve healthy young men (23±2.5 years old)
Braz J Med Biol Res. Publicado em: 11/10/2018
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4. Cardiorespiratory performance of coronary artery disease patients on land versus underwater treadmill tests: a comparative study
OBJECTIVE: To compare responses to a cardiopulmonary exercise test on land versus on an underwater treadmill, to assess the cardiorespiratory performance of coronary artery disease patients while immersed in warm water and to compare with the performance of healthy individuals. METHODS: The sample population consisted of 40 subjects, which included 20 coro
Clinics. Publicado em: 2017-11
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5. Intensity and physiological responses to the 6-minute walk test in middle-aged and older adults: a comparison with cardiopulmonary exercise testing
The 6-minute walk test (6MWT) is a simple field test that is widely used in clinical settings to assess functional exercise capacity. However, studies with healthy subjects are scarce. We hypothesized that the 6MWT might be useful to assess exercise capacity in healthy subjects. The purpose of this study was to evaluate 6MWT intensity in middle-aged and olde
Braz J Med Biol Res. Publicado em: 24/02/2015
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6. Differences in muscle strength after ACL reconstruction do not influence cardiorespiratory responses to isometabolic exercise
Objectives: To investigate whether the muscle strength decrease that follows anterior cruciate ligament (ACL) reconstruction would lead to different cardiorespiratory adjustments during dynamic exercise. Method: Eighteen active male subjects were submitted to isokinetic evaluation of knee flexor and extensor muscles four months after ACL surgery. Thigh c
Braz. J. Phys. Ther.. Publicado em: 02/05/2014
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7. Variabilidade da frequência cardíaca após treinamento concorrente : comparação entre homens e mulheres de meia-idade = Heart rate variability after concurrent training : comparison between middle-aged men and women / Heart rate variability after concurrent training : comparison between middle-aged men and women
The autonomic nervous system dysfunction and the increase in chronic degenerative diseases are manifested by the aging process, leading to changes of the autonomic modulation cardiac, and therefore the heart rate variability. Regarding the response of the autonomic nervous system and cardiorespiratory adaptive responses are even less enlightening evidencing
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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8. Respostas cardiorrespiratórias promovidas pela ativação de receptores glutamatérgicos e purinérgicos no núcleo do trato solitário / Cardiorespiratory responses produced by activation of the glutamatergic and purinergic receptors of nucleus of the solitary tract
O sistema nervoso central (SNC) possui um papel fundamental na manutenção da composição e do volume dos líquidos corporais, para a adequada perfusão tecidual. Uma importante área do SNC que recebe aferências cardiorrespiratórias é o núcleo do trato solitário (NTS) que possui vários tipos de neurotransmissores, dentre eles o L-glutamato e adenosi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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9. Sertraline inhibits formalin-induced nociception and cardiovascular responses
The objective of the present study was to determine the antihyperalgesic effect of sertraline, measured indirectly by the changes of sciatic afferent nerve activity, and its effects on cardiorespiratory parameters, using the model of formalin-induced inflammatory nociception in anesthetized rats. Serum serotonin (5-HT) levels were measured in order to test t
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-01
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10. Toxicidade da deltametrina (formulação Butox CE25) nas respostas cardio-respiratórias da tilápia-do-Nilo (Oreochromis niloticus)
Deltamethrin is a synthetic pyrethroid pesticide, type II, considered of low persistence in the environment and widely utilized in agriculture and aquaculture to control plagues and aquatic parasites respectivamently. In spite of it low toxicity in mammals, this pesticide can be extremely toxic for fish. In this study, we evaluate the effects of a sub-lethal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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11. Impacto de diferentes vias de contaminação por mercúrio inorgânico sobre os biomarcadores de estresse oxidativo, a função cardio-respiratória e o potencial de bioconcentração e biomagnificação em matrinxã, Brycon amazonicus (Spix &Agassiz, 1829) e em traíra, Hoplias malabaricus (Bloch, 1794)
Tanto o mercúrio (Hg) quanto seus compostos são reconhecidos como importantes poluentes, pois são persistentes, bioacumulativos e tóxicos. As maiores fontes de poluição por Hg são as indústrias de cloro-álcali e a mineração do ouro. O aporte crescente de Hg nos ambientes aquáticos resulta em grande acumulação deste metal nos tecidos de peixes e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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12. Hypercarbic cardiorespiratory reflexes in the facultative air-breathing fish jeju (Hoplerythrinus unitaeniatus): the role of branchial CO2 chemoreceptors.
The aim of the present study was determine the roles that externally versus internally oriented CO2/H+ - sensitive chemoreceptors might play in promoting cardiorespiratory responses to environmental hypercarbia in the air-breathing fish.
The Journal of Experimental Biology. Publicado em: 2011