Caracterização da variabilidade da frequência cardíaca em indivíduos com síndrome metabólica

Rodrigues, Jhennyfer Aline Lima; Ferrari, Gustavo Duarte; Fernandes, Igor A.; Ferezin, Letícia Perticarrara; Trapé, Átila Alexandre; Júnior, Carlos Roberto Bueno

doi:10.1590/1517-869220172303164578

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…Each RR static segment will be submitted to the Fast Fourier Transform (FFT) spectral analysis after the Hanning window [ 48 ]. The analysis of HRV will be performed by linear methods and analyzed in the domains of time (SDNN and RMSSD) and frequency (LF, HF, and LF/HF ratio) [ 49 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from COVID-19: the AEROBICOVID study protocol for a randomized controlled trial

Trapé

Camacho-Cardeñosa

et al. 2021

Trials

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Background Recent studies point to a lower number and reduced severity of cases in higher altitude cities with decreased oxygen concentration. Specific literature has shown several benefits of physical training, so, in this sense, physical training with hypoxic stimulus appears as an alternative that supports the conventional treatments of the COVID-19 patient’s recovery. Thus, this study’s primary aim is to analyze the effects of moderate-intensity intermittent hypoxic training on health outcomes in COVID-19 recovered patients. Methods A clinical trial controlled double-blind study was designed. Participants (30–69 years old) will be recruited among those with moderate to severe COVID-19 symptoms, approximately 30 days after recovery. They will be included in groups according to the training (T) and recovery (R) association with hypoxia (H) or normoxia (N): (a) TH:RH, (b) TN:RH, (c) TN:RN, and last (d) the control group. The 8-week exercise bike intervention will be carried out with a gradual load increase according to the established periods, three times a week in sets of 5 min, 90 to 100% of the anaerobic threshold (AT), and a 2.5-min break. Blood will be collected for genotyping. First, after 4 weeks (partial), after 8 weeks, and later, 4 weeks after the end of the physical training intervention, participants will perform assessments. The primary outcome is the maximum oxygen consumption (VO2peak). The secondary outcomes include lung function, inflammatory mediators, hematological, autonomic parameters, AT, body composition analysis, quality of life, mental health, anthropometric measurements, and physical fitness. The statistical analysis will be executed using the linear regression model with mixed effects at a 5% significance level. Discussion This study is designed to provide evidence to support the clinical benefits of moderate-intensity intermittent hypoxic training as a part of the treatment of patients recovered from COVID-19. It may also provide evidence on the efficacy and safety of intermittent hypoxic training in different health conditions. Lastly, this study presents an innovative strategy enabling up to 16 participants in the same training session. Trial registration ClinicalTrials.gov RBR-5d7hkv. Registered after the start of inclusion on 3 November 2020 with the Brazilian Clinical Trials Registry

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Section: Methodsmentioning

confidence: 99%

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from COVID-19: the AEROBICOVID study protocol for a randomized controlled trial

Trapé

Camacho-Cardeñosa

et al. 2021

Trials

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“…In a quiet room at a comfortable temperature, subjects were equipped with a Polar Team 2 heart rate sensor placed at the height of the mesosternal point (Polar Electro Oy, Kempele, Finland), and then rested in the sitting position for approximately 15 minutes for recording of baseline conditions (20). Time and frequency domain parameters of HRV were obtained from 15-minute recordings of R-R intervals, discarding the initial 5 minutes, throughout the test and in the first minute of recovery (25).…”

Section: Methodsmentioning

confidence: 99%

Effects of Different Periodization Strategies of Combined Aerobic and Strength Training on Heart Rate Variability in Older Women

Rodrigues

Santos

Medeiros

et al. 2021

Journal of Strength and Conditioning Research

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The preservation of autonomic function has been proposed to be a key determinant of health and longevity. Periodization in combined training (CT) (strength plus aerobic exercise in the same session) might improve autonomic modulation. However, the specific influences of nonperiodized (NP), flexible nonlinear periodized (FNLP), and nonlinear periodized (NLP) strategies of CT on heart rate variability (HRV) are currently unknown. Therefore, we investigated the effects of NP, FNLP, and NLP strategies of CT on HRV in physically active women. In total, 54 physically active older women (61.6 6 6.3 years) previously engaged in a regular exercise training were randomly allocated into 3 groups: NP, FNLP, and NLP. All the subjects performed 12 weeks of training, 3 times per week, with the sessions divided into aerobic (bicycle or treadmill) and strength exercises. Before and after the exercise training, we examined anthropometric, body composition, and HRV measures (low-frequency [LF], high-frequency [HF], LF/ HF, and root mean square successive difference of RR intervals [RMSSD]) during rest, a maximum exercise test, and recovery post-test. Mixed-model measures were used, and statistical significance was set at a = 0.05. The waist circumference reduced only in the NP group (Δ = 22.01%). The RMSSD increased in the NLP (Δ = 76.5%) and LF/HF ratio increased in the FNLP (Δ = 34.51%) during the rest period. There were no differences during the exercise test and recovery after test for LF, HF, LF/HF, or RMSSD. In active women, nonlinear periodization strategies of CT improved one of the cardiovascular health outcomes because HRV is a direct predictor of cardiovascular risk.

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“…Each RR static segment will be submitted to the spectral analysis by Fast Fourier Transform (FFT), after Hanning window [48]. The analysis of HRV will be performed by linear methods, analysed in the domains of time (SDNN and RMSSD) and frequency (LF, HF, and LF/HF ratio) [49].…”

Section: Autonomic Parametersmentioning

confidence: 99%

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from covid-19: the AEROBICOVID study protocol for a randomised controlled trial

Trapé

Camacho-Cardeñosa

Merellano-Navarro

et al. 2021

Preprint

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Background: Recent studies point to a lower number and a reduction in the severity of cases in higher altitude cities, with decreased oxygen concentration. Specific literature has shown several benefits of physical training, so, in this sense, physical training with hypoxic stimulus appears as an alternative that supports the conventional treatments of the COVID-19 patient's recovery. Thus, this study's primary aim is to analyse the effects of moderate-intensity intermittent hypoxic training on health outcomes in COVID-19 recovered patients. Methods: A clinical trial controlled double-blind study was designed. Participants (30-69 years old) will be recruited among those with moderate to severe COVID-19 symptoms, approximately 30 days after recovery. They will be included in groups according to the training (T) and recovery (R) association with hypoxia (H) or normoxia (N): a) TH:RH, b) TN:RH, c) TN:RN, and, last, d) the control group. The 8-week exercise bike intervention will be carried out with a gradual load increase according to the established periods, three times a week in sets of 5 minutes, 90 to 100% of the anaerobic threshold (AT), and a 2,5-minute break. Blood will be collected for genotyping. First, after four weeks (partial), after eight weeks, and later, four weeks after the end of the physical training intervention, participants will perform assessments. The primary outcome is the maximum oxygen consumption (VO2max). The secondary outcomes include lung function, inflammatory mediators, haematological, autonomic parameters, AT, body composition analysis, quality of life, mental health, anthropometric measurements, and physical fitness. The statistical analysis will be executed using the linear regression model with mixed effects at a 5% significance level. Discussion: This study is designed to provide evidence to support the clinical benefits of moderate-intensity intermittent hypoxic training as a part of the treatment of patients recovered from COVID-19. It may also provide evidence on the efficacy and safety of intermittent hypoxic training in different health conditions. Lastly, this study presents an innovative strategy enabling up to 16 participants in the same training session.Trial registration: Brazilian Clinical Trials Registry, RBR-5d7hkv. Registered after the start of inclusion; 3 November 2020; https://ensaiosclinicos.gov.br/rg/RBR-5d7hkv

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Caracterização da variabilidade da frequência cardíaca em indivíduos com síndrome metabólica

Cited by 7 publications

References 25 publications

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from COVID-19: the AEROBICOVID study protocol for a randomized controlled trial

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from COVID-19: the AEROBICOVID study protocol for a randomized controlled trial

Effects of Different Periodization Strategies of Combined Aerobic and Strength Training on Heart Rate Variability in Older Women

Effects of moderate-intensity intermittent hypoxic training on health outcomes of patients recovered from covid-19: the AEROBICOVID study protocol for a randomised controlled trial

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