Efeito do pacing e do exercício prévio na performance aeróbia

The aim of this study was to analyze the influence of prior exercise on different intensity distribution strategies (pacing). The study included five male individuals, apparently healthy, aged between 18 and 25 years, and without regular practice of physical activities. The subjects were tested on different days following the protocols on a cycle ergometer: 1) a progressive ramp test, 2) three constant load tests in the intensities of 85%, 90% and 95% IVO2max to exhaustion, and 3) six tests with and without holding a prior exercise intensity of 70%  with different strategies for Even-intensity pace, ES (401 ± 70 W), which consists of an exercise at a pace and / or constant intensity from beginning to end; where intensity is initially increased to 10% less than the ES progressively increase to reach 10% above the intensity of ES, and; Fast-start; FS, where there is a reversal in the way of distributing intensity, ie the initial intensity is 10% higher than the value of ES decreased progressively to 10% below that ES. All these tests were performed in random order. The tlim with previous exercise was significantly shorter than without previous exercise at FS condition (p < 0.05). The VO2final obtained at ES condition was similar with (3243 ± 599 ml.min-1) and without (3252 ± 384 ml.min-1) previous aerobic exercise (p > 0.05). However, the VO2final obtained at FS condition was higher with (3291 ± 218 ml.min-1) than without (3097 ± 207 ml.min-1) previous aerobic exercise (p < 0.05). The heart rate was higher at ES condition with than without previous aerobic exercise (p < 0.05). There was no significant difference in this variable for FS condition with and without previous aerobic exercise (p > 0.05). It can be concluded that the results the previous exercise (70%) achieved lasting 6 minutes followed by 6 minutes of recovery appears to influence / commit ting the conditions during the pacing for this population

Metaloproteinases da matriz 2 e 9 em coelhos com cardiomiopatia induzida pela doxorrubicina

Pós-graduação em Medicina Veterinária - FCAV

Achados clínicos, hemodinâmicos e hemogasométricos da infusão contínua de propofol associado ou não ao tramadol em ovelhas submetidas à videolaparoscopia

Pós-graduação em Cirurgia Veterinária - FCAV

Modelagem computacional das túnicas cardíacas para processamento e controle de qualidade

This paper considers a study of the anatomical features of the cardiac system and a three-dimensional model of the different tunics that comprise the heart wall, for processing and quality control of radiological images. The structures are built by the layer overlapping method, where a layer can be understood as a slice of the three-dimensional object. The pericardium, myocardium and endocardium were represented with three-dimensional cylinders and hexagons. The spatial arrangement of the cardiac system is determined by an background image of a real model, which values are defined according to the shape of the region and on the anatomical patients characteristics. The results are significant, considering the anatomical structures details, as well as the representation of the thicknesses of the regions of the heart wall. The validation of the anatomical model was accomplished through comparisons with dimensions obtained from a real model and allows verifying that the model is appropriate. The degree of representation will allow the verification of the influence of radiological parameters, morphometric peculiarities and stage of the diseases on the quality of the images, as well as on the performance of the Computer-Aided Diagnosis (CAD).

Parâmetros Neuropáticos no Diabetes Mellitus

Pós-graduação em Fisioterapia - FCT

Antidepressivo modula o comportamento e a expressão gênica das cadeias de miosina, serca2 e fosfolambam em ratos com insuficiência aórtica?

Introduction: Aortic insufficiency (AoI), a volume overload, is characterized by the diastolic reflux of blood from the regurgitating aorta to the left ventricle. This effect results from malfunctioning aortic cusps. The main cause of AoI in developing countries is rheumatic fever, including Brazil, and valvar degeneration in developed countries. There is a strong association between cardiovascular diseases and depression. Selective serotonin reuptake inhibitors (SSRI) are one of the most prescribed antidepressants in the world. Previous studies of our laboratory showed that the utilization of a SSRI, paroxetine, improved cardiac function in rats with sub-chronic AoI and reduced the daily ingestion of hypertonic sodium (NaCl 0,3M). Cardiovascular diseases can determine behavior changes like increase of anxiety, and it is yet unknown if AoI would determine anxiety or anhedonia, incapacity of obtaining pleasure through physical or sensorial experiences. A possible target for SSRI action could be a change in the expression of enzyme isoforms that collaborate in the contractile function of the heart muscle, like the heavy chains of myosine, the sarcoplasmatic reticulum Ca2+/ATPase (SERCA) and its regulator protein, phospholamban (PLB). Objectives: Evaluation of behavior parameters for anxiety and anhedonia state and genic expression of a-myosine, b-myosine, SERCA2a and PLB in the heart tissue of rats with subchronic AoI that received treatment with an SSRI (paroxetine) for 4 weeks. Methods: Surgery to induce AoI was performed on male Wistar rats, anxiety was evaluated by the elevated plus-maze (EPM) and state of anhedonia was tested by ingestion of 2% sucrose solution. After euthanasia the heart tissue was collected and total RNA was extracted to be analyzed by the RT-qPCR method. Results: Heart fractional shortening was preserved in rats with AoI that were treated compared to rats with AoI that were not treated. There was no statistically ...

Associação entre o potencial evocado auditivo de longa latência e os índices lineares da variabilidade da frequência cardíaca em repouso

Pós-graduação em Fonoaudiologia - FFC

Variabilidade da frequência cardíaca, funções cognitivas e nível de atividade física em pacientes com doença de Alzheimer

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Parâmetros ecocardiográficos e variabilidade da frequência cardíaca em fêmeas caninas com sepse de ocorrência natural devido à piometra e suas correlações com valores séricos de TNF-alfa, IL-1 beta, IL-6, IL-10 e proteína C reativa

Pós-graduação em Medicina Veterinária - FCAV

Efeito dos hábitos comportamentais e gordura corporal sobre indicadores de risco cardiovasculares entre adolescentes: estudo de coorte de 12 meses

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Expressão das proteínas envolvidas no trânsito de cálcio miocárdico de ratos obesos por dieta hiperlipídica saturada

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Respostas da frequência cardíaca ao teste de 1RM e da modulação autonômica da frequência cardíaca no período de recuperação em indivíduos com fatores de risco para doenças cardiovasculares

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

Comparação entre a variação da pressão de pulso e o índice de variabilidade pletismográfica como índices dinâmicos de pré-carga em cães anestesiados com isoflurano submetidos à hemorragia hipotensiva por reposição volêmica

Pós-graduação em Anestesiologia - FMB

Modulação autonômica cardíaca após exercícios com haste oscilatória em ambos os sexos

Pós-graduação em Fisioterapia - FCT

Distance exercised during submaximal training on race winnings for Thoroughbred racehorses

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)