Heart Rate Variability
Mostrando 25-36 de 297 artigos, teses e dissertações.
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25. Is a short-stage protocol during an incremental exercise test reliable for heart rate variability threshold analysis?
Abstract Aim: Heart rate variability threshold (HRVT) is a valid method to determine parasympathetic depression during an incremental exercise test (IET). However, HRVT is usually assessed using the last 60s of each 180s stage of an IET, resulting in longer and demotivating tests. This study aimed to evaluate the agreement of HRVT analysis adopting the fir
Motriz: rev. educ. fis.. Publicado em: 04/11/2019
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26. Cardiac autonomic responses during and after a single session of aerobic exercise with and without blood flow restriction
Abstract Aim: To verify the on and off heart rate (HR) and HR variability (HRV) kinetics during a high-load aerobic exercise and a low-load aerobic exercise, with and without blood flow restriction (BFR). Methods: Fourteen healthy male subjects performed three randomly assigned experimental sessions: 1) 10 minutes walking at 40% of maximal aerobic speed
Motriz: rev. educ. fis.. Publicado em: 04/11/2019
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27. Cardiac Autonomic Modulation of Healthy Individuals and Patients with Chronic Obstructive Pulmonary Disease During Spontaneous and Controlled Breathing
Abstract Background: Lung diseases and different forms of breathing may interfere with cardiac autonomic modulation (CAM). Objective: To compare CAM in individuals with chronic obstructive pulmonary disease (COPD) with healthy individuals during spontaneous breathing (SB) and controlled breathing (CB). Methods: Cross-sectional study involving 30 individua
Int. J. Cardiovasc. Sci.. Publicado em: 24/10/2019
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28. Determination of heart rate threshold from heart rate kinetics during maximal graded exercise in soccer players
Resumo O objetivo do presente estudo foi identificar o limiar de frequência cardíaca baseado na cinética da frequência cardíaca durante o exercício máximo graduado em jogadores de futebol. Vinte e seis jogadores de futebol masculino realizaram um teste de exercício máximo (protocolo de Bruce) em uma esteira motorizada. O consumo de oxigênio (VO2) e
Rev. bras. cineantropom. desempenho hum.. Publicado em: 17/10/2019
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29. Prognostic value of coupling interval, prematurity index and heart rate variability in Boxer dogs
RESUMO: Cães da raça Boxer com cardiomiopatia arritmogênica do ventrículo direito (CAVD) podem apresentar morte súbita independentemente da presença/ausência de sinais clínicos. Os objetivos desse estudo retrospectivo foram: 1) investigar o intervalo de acoplamento (IA) e o índice de prematuridade (IP) das arritmias ventriculares e a variabilidade d
Pesq. Vet. Bras.. Publicado em: 14/10/2019
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30. Respostas autonômicas de recém-nascidos prematuros ao posicionamento do corpo e ruídos ambientais na unidade de terapia intensiva neonatal
RESUMO Objetivo: Avaliar as respostas fisiológicas e do sistema nervoso autônomo de recém-nascidos prematuros ao posicionamento do corpo e ruídos ambientais na unidade de terapia intensiva neonatal. Métodos: Este foi um estudo quasi-experimental. O sistema nervoso autônomo de recém-nascidos foi avaliado com base na variabilidade da frequência card�
Rev. bras. ter. intensiva. Publicado em: 14/10/2019
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31. Estimated intensity and acute cardiovascular response to a single exercise session guided by the fitness app Sworkit® Personal Trainer
Abstract Aim: The aim of the present study was to evaluate the effect of an exercise session prescribed by the Sworkit® Personal Trainer application on hemodynamic and autonomic responses. Methods: The sample consisted of 11 men classified as sedentary according to IPAQ. The exercises were randomly selected by the app Sworkit® Personal Trainer, using t
Motriz: rev. educ. fis.. Publicado em: 09/09/2019
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32. The effects of cataract surgery on autonomic heart rate control: a prospective cross-sectional and analytical study
OBJECTIVES: We aimed to evaluate the effects of cataract surgery on cardiac autonomic modulation. METHODS: A cross-sectional and analytical study was conducted at the Hospital Maria Braido in the city of São Caetano do Sul, São Paulo, between 2015 and 2016. We investigated 19 patients of both sexes who were all over 50 years old; all patients had a diagn
Clinics. Publicado em: 09/09/2019
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33. Introduction of Application of Gini Coefficient to Heart Rate Variability Spectrum for Mental Stress Evaluation
Resumo Fundamento: O coeficiente de Gini é um instrumento estatístico geralmente usado por economistas para quantificar a desigualdade de renda. No entanto, ele pode ser aplicado a qualquer tipo de dados com distribuição desigual, incluindo a variabilidade da frequência cardíaca (VFC). Objetivos: Avaliar a aplicação do coeficiente de Gini para medi
Arq. Bras. Cardiol.. Publicado em: 09/09/2019
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34. Does the combination of resistance training and stretching increase cardiac overload?
OBJECTIVES: To compare the effects of combinations of resistance training (RT) and static stretching (SS) on heart rate (HR), systolic pressure (SBP), diastolic pressure (DBP), rate pressure product (RPP), oxygen saturation (SpO2), rating of perceived effort (RPE), and heart rate variability (HRV) in men. METHODS: Twelve normotensive healthy men participat
Clinics. Publicado em: 02/09/2019
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35. Effect of walk training combined with blood flow restriction on resting heart rate variability and resting blood pressure in middle-aged men
Abstract Aim: To investigate the effects of low-intensity walk training with and without blood flow restriction (BRF) on resting heart rate variability (HRV) and blood pressure (BP) in middle-aged men. Methods: Twenty-one men were randomly assigned into the walk training group with (BRF-W; n = 11) and without (NOR-W; n = 10) BFR. The resting HRV and blood
Motriz: rev. educ. fis.. Publicado em: 22/08/2019
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36. Impact of heart rate on reproducibility of heart rate variability analysis in the supine and standing positions in healthy men
OBJECTIVE: The reliability of heart rate variability (HRV) analysis is not yet fully understood, especially considering different body positions and the mathematical influence of heart rate. The aim of this study was to evaluate the reliability of HRV in supine and standing positions, with and without mathematical adjustment of HRV by the average R-R interv
Clinics. Publicado em: 12/08/2019