Influência do treinamento resistido funcional sobre a modulação autonômica cardíaca, força muscular, parâmetros cardiorrespiratórios e qualidade de vida em mulheres jovens saudáveis

Introduction: Functional training promotes benefits over several muscle skills, however, its still unknown the effect on cardiac autonomic modulation, cardiorespiratory parameters and quality of life in adult healthy population. Objectives: To evaluate the influence of functional training on cardiac autonomic modulation, cardiorespiratory parameters, muscle strength and quality of life in healthy young women. Methods: Data were evaluated from 29 women who were divided in two groups: Functional Training Group (FTG, n = 13, 23 ± 2.51 years, body mass index (BMI) of 21.90 ± 2, 82Kg / m²) and Control Group (CG, n = 16, 20.56 ± 1.03 years, BMI 22.12 ± 3.86 kg / m²). The FTG performed functional training periodization for 12 weeks with a frequency of 3 times a week and a session duration of 60 minutes.Both groups underwent the following assessments before and after training: autonomic modulation, cardiorespiratory parameters, muscle strength (1RM test of each of the exercises used in training) and quality of life (SF-36 questionnaire). For assessment of autonomic cardiac modulation frequency was recorded beat to beat at rest in the supine position with spontaneous breathing for 30 minutes and indexes of heart rate variability (HRV) were obtained in the time and frequency by Kubios HRV software...Introdução: O treinamento funcional promove benefícios sobre diversas aptidões musculares, entretanto, ainda é desconhecido o seu efeito sobre a modulação autonômica cardíaca, parâmetros cardiorrespiratórios e qualidade de vida em população adulta e saudável. Objetivos: Avaliar a influência de um treinamento funcional sobre a modulação autonômica cardíaca, parâmetros cardiorrespiratórios, força muscular e qualidade de vida em mulheres jovens saudáveis. Métodos: Para sua realização foram avaliados dados de 29 mulheres, as quais foram distribuídas em dois grupos: Grupo Treinamento Funcional (GTF; n = 13; 23 ± 2,51 anos; índice de massa corpórea (IMC) de 21,90 ± 2,82Kg/m²) e Grupo Controle (GC; n = 16; 20,56 ± 1,03 anos; IMC de 22,12 ± 3,86 Kg/m²). O GTF realizou treinamento funcional periodizado por 12 semanas com frequência de 3 vezes na semana, com sessões de 60 minutos de duração. Os dois grupos realizaram as seguintes avaliações antes e após o treinamento: modulação autonômica, parâmetros cardiorrespiratórios, força muscular (teste de 1RM de cada um dos exercícios utilizados no treinamento) e qualidade de vida (Questionário SF-36). Para avaliação da modulação autonômica a frequência cardíaca foi captada batimento a batimento em repouso na posição supina com respiração espontânea por 30 minutos e índices de variabilidade da frequência cardíaca (VFC) foram obtidos nos domínios do tempo e frequência pelo software Kubios HRV...Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

Comparison of Polar(®) RS800G3(™) heart rate monitor with Polar(®) S810i(™) and electrocardiogram to obtain the series of RR intervals and analysis of heart rate variability at rest

The Polar(®) RS800G3(™) rate monitor was released in the market to replace the Polar(®) S810i(™) , and few studies have assessed that the RR series obtained by this equipment is reliable for analysis of heart rate variability (HRV). We compared HRV indexes among the devices Polar(®) RS800G3(™) , Polar(®) S810i(™) and eletrocardiogram (ECG) to know whether the series of Polar(®) RS800G3(™) are as reliable as those devices already validated. We analysed data from 30 healthy young adults, male, with an average age of 20·66 ± 1·40 years, which had captured the heart rate beat to beat in the three devices simultaneously with spontaneously breathing, first in the supine position and subsequently sit both for 30 min. The obtained series of RR intervals was used to calculate the indexes of HRV in the time domain (SDNN and RMSSD) and in the frequency domain (LF, HF and LF/HF). There were no significant differences in HRV indexes calculated from series obtained by the three devices, regardless of the position analysed, and a high correlation coefficient was observed. The results suggest that the Polar(®) RS800G3(™) is able to capture series of RR intervals for analysis of HRV indexes as reliable as those obtained by ECG and Polar(®) S810i(™) .Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

The congenital long QT syndrome Type 3: An update

Congenital long QT syndrome type 3 (LQT3) is the third in frequency compared to the 15 forms known currently of congenital long QT syndrome (LQTS). Cardiac events are less frequent in LQT3 when compared with LQT1 and LQT2, but more likely to be lethal; the likelihood of dying during a cardiac event is 20% in families with an LQT3 mutation and 4% with either an LQT1 or an LQT2 mutation. LQT3 is consequence of mutation of gene SCN5A which codes for the Nav1.5 Na+ channel α-subunit and electrocardiographically characterized by a tendency to bradycardia related to age, prolonged QT/QTc interval (mean QTc value 478 ± 52 ms), accentuated QT dispersion consequence of prolonged ST segment, late onset of T wave and frequent prominent U wave because of longer repolarization of the M cell across left ventricular wall

Impact of functional training on cardiac autonomic modulation, cardiopulmonary parameters and quality of life in healthy women

Functional training (FT) promotes benefits in various physical abilities; however, its effect on autonomic modulation, cardiorespiratory parameters and quality of life in the healthy adult population is unknown, and thus, the aim of this study was to evaluate the influence of  FT on these variables in healthy young women. The study consisted of 29 women, distributed into two groups: the FT Group (FTG; n = 13; 23 ± 2·51 years; 21·90 ± 2·82 kg m(-) ²) and the Control Group (CG; n = 16; 20·56 ± 1·03 years; 22·12 ± 3·86 kg m(-) ²). The FTG performed periodized FT for 12 weeks, three times a week. The following were evaluated: autonomic modulation (heart rate variability), cardiorespiratory parameters and quality of life (SF-36 Questionnaire). The Student's t-test for unpaired data or the Mann-Whitney test was used to compare the differences obtained between the final moment and the initial moment of the studied groups (P<0·05). The FTG demonstrated significant improvements in quality of life and autonomic modulation (P<0·05), but not in the cardiorespiratory parameters. Functional training was able to produce improvements in autonomic modulation and quality of life.Coordenação de Aperfeiçoamentode Pessoal de Nível Superior (CAPES