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| Spina,G.D.; Gonze,B.B.; Barbosa,A.C.B.; Sperandio,E.F.; Dourado,V.Z.. |
| There is currently a lack of information adjacent on the influence of sex and age in heart rate variability (HRV), adjusted according to accelerometer-based physical activity (PADL). We hypothesized that the effect of sex and age on the HRV should be reduced or absent in individuals with a suitable PADL level. We aim to evaluate the influence of sex and age on HRV, adjusted for the confounding effects of the PADL level. A total of 485 age-stratified subjects (18–39, 40–59, and ≥60 years) underwent HRV analyses at rest and 7-day assessments of accelerometer-based PADL. Multivariate analyses of covariance were done using log-transformed HRV indices as outcomes, age and sex as fixed factors, and PADL, cardiovascular risk, fat body mass, and heart rate (HR) at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Autonomic balance; HRV; Aging. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000800605 |
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| da L. Goulart,C.; San Martin,E.A.; Mansour,K.M.K.; Schneiders,P.B.; da Silva,A.L.G.. |
| The aim of this study was to evaluate the effect of expiratory positive airway pressure (EPAP) on heart rate variability (HRV) indices at rest and during 6-min walk test (6MWT) in chronic obstructive pulmonary disease (COPD) patients. Fifteen moderate to severe COPD patients were randomized and evaluated with and without (Non-EPAP) a 5 cmH2O EPAP device. Respiratory rate (RR) was collected at rest (5 min), during the 6MWT (5 min), and at recovery (5 min). Indices of HRV were computed in the time domain, in the frequency domain, and nonlinear analysis. For EPAP and Non-EPAP during the 6MWT, we found an increased mean heart rate (HR) (P=0.001; P=0.001) while mean RR (P=0.001; P=0.015) and RR tri index decreased (P=0.006; P=0.028). Peripheral oxygen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Autonomic nervous system; HRV; COPD; Positive-pressure respiration; Exercise test. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000600605 |
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| Gardinassi,Luiz Gustavo; Simas,Paulo Vitor Marques; Salomão,João Batista; Durigon,Edison Luiz; Trevisan,Dirce Maria Zanetta; Cordeiro,José Antonio; Lacerda,Mauricio Nogueira; Rahal,Paula; Souza,Fátima Pereira de. |
| Viruses are the major cause of lower respiratory tract infections in childhood and the main viruses involved are Human Respiratory Syncytial Virus (HRSV), Human Metapneumovirus (HMPV), Influenzavirus A and B (FLUA and FLUB), Human Parainfluenza Virus 1, 2 and 3 (HPIV1, 2 and 3) and Human Rhinovirus (HRV). The purposes of this study were to detect respiratory viruses in hospitalized children younger than six years and identify the influence of temperature and relative air humidity on the detected viruses. Samples of nasopharyngeal washes were collected from hospitalized children between May/2004 and September/2005. Methods of viral detection were RT-PCR, PCR and HRV amplicons were confirmed by hybridization. Results showed 54% (148/272) of viral positivity.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Viral Respiratory Infections; HRSV; HRV; Temperature; Relative Air Humidity. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100011 |
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