Heart Rate Variability Threshold
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. 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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2. 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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3. Reliability of heart rate variability threshold and parasympathetic reactivation after a submaximal exercise test
Abstract The objective of this study was to evaluate reproducibility of heart rate variability threshold (HRVT) and parasympathetic reactivation in physically active men (n= 16, 24.3 ± 5.1 years). During the test, HRVT was assessed by SD1 and r-MSSD dynamics. Immediately after exercise, r-MSSD was analyzed in segments of 60 seconds for a period of five minu
Motriz: rev. educ. fis.. Publicado em: 2017-03
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4. Is heart rate variability a feasible method to determine anaerobic threshold in progressive resistance exercise in coronary artery disease?
ABSTRACT Background Recent studies have shown that the magnitude of the metabolic and autonomic responses during progressive resistance exercise (PRE) is associated with the determination of the anaerobic threshold (AT). AT is an important parameter to determine intensity in dynamic exercise. Objectives To investigate the metabolic and cardiac autonomic re
Braz. J. Phys. Ther.. Publicado em: 16/06/2016
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5. Blood pressure and cardiac autonomic modulation at rest, during exercise and recovery time in the young overweight
Abstract This study aimed to assess the blood pressure (BP), cardiac autonomic modulation at rest, in physical exercise and in the recovery in untrained eutrophic (E) and overweight (O) youth. The body mass index (BMI), waist circumference (WC), systolic BP-SBP (E: 109.80 ± 10.05; O: 121.85 ± 6.98 mmHg) and diastolic BP - DBP (E: 65.90 ± 7.28; O: 73.14 ±
Motriz: rev. educ. fis.. Publicado em: 2016-03
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6. Interval training based on ventilatory anaerobic threshold increases cardiac vagal modulation and decreases high-sensitivity c-reative protein: randomized clinical trial in coronary artery disease
Background: Autonomic dysfunction and inflammatory activity are involved in the development and progression of coronary artery disease (CAD), and exercise training has been shown to confer a cardiovascular benefit. Objective: To evaluate the effects that interval training (IT) based on ventilatory anaerobic threshold (VAT) has on heart rate variability (H
Braz. J. Phys. Ther.. Publicado em: 09/10/2015
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7. Utilização da variabilidade da frequência cardíaca para a identificação do limiar anaeróbio: uma revisão sistemática
O objetivo desta revisão sistemática foi investigar os níveis de correlação e/ou concordância entre o Limiar de variabilidade da frequência cardíaca (LVFC), identificado por meio dos índices RMSSD e SD1, e o limiar anaeróbio (LA) em amostras com diferentes condições clínicas e funcionais. A busca foi realizada por dois autores de forma independe
Rev. educ. fis. UEM. Publicado em: 2014-12
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8. Influence of exercise modality on agreement between gas exchange and heart rate variability thresholds
The main purpose of this study was to investigate the level of agreement between the gas exchange threshold (GET) and heart rate variability threshold (HRVT) during maximal cardiopulmonary exercise testing (CPET) using three different exercise modalities. A further aim was to establish whether there was a 1:1 relationship between the percentage heart rate re
Braz J Med Biol Res. Publicado em: 08/07/2014
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9. Reliability and validity of heart rate variability threshold assessment during an incremental shuttle-walk test in middle-aged and older adults
Studies on the assessment of heart rate variability threshold (HRVT) during walking are scarce. We determined the reliability and validity of HRVT assessment during the incremental shuttle walk test (ISWT) in healthy subjects. Thirty-one participants aged 57 ± 9 years (17 females) performed 3 ISWTs. During the 1st and 2nd ISWTs, instantaneous heart rate var
Braz J Med Biol Res. Publicado em: 01/02/2013
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10. Determinação das zonas de transição metabólica durante a corrida mediante os limiares de variabilidade da frequência cardíaca / Determination of transition metabolic zones during running using hert rate variability thresholds
The aim of the present study was to obtain evidences of validity and reliability of the thresholds of heart rate variability (HRV). Nineteen male subjects, healthy and runners (30,4 ± 4,1 years; 175,9 ± 6,4 cm; 74,3 ± 8,5 kg) performed a progressive maximal test on a treadmill with initial velocity 5 km.h-1 e increases of 1 km.h-1 every 3 minutes (1% slop
Publicado em: 2011
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11. EFEITOS DA CARGA DE TREINAMENTO SOBRE VARIÁVEIS BIOQUÍMICAS, PSICOLÓGICA, FISIOLÓGICA E HEMATOLÓGICA DURANTE UMA PRÉ- TEMPORADA NO FUTEBOL PROFISSIONAL
Introduction: The soccer game demands from players a great physical capacity. Thus, it is necessary the regular and controlled involvement in training process to improve their physical condition. The stress generated by the training load of each session may cause positive and negative changes on physiological, psychological, biochemical and hematological res
Publicado em: 2009
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12. Heart rate variability threshold in different ergometric protocols / Limiar de variabilidade da freqüência cardíaca em diferentes protocolos ergométricos
The heart rate variability (VFC) decreases gradually during progressive exercise, which tends to stabilization in intermediate loads. Initially, the possibility of identification of a threshold of this variable (LiVFC1), assumed as demarcating of the transition of the vagal withdrawal for the predominance of the sympathetic activity in the control of the FC
Publicado em: 2008