7 research outputs found
Birth weight and heart rate autonomic recovery following exercise in healthy term-born adults
The impact of birth weight (BW) on adult health has been studied, related to the autonomic nervous system, and implicated in cardiovascular risk. We investigated cardiorespiratory and heart rate (HR) autonomic recovery after moderate effort in healthy term-born adults with different BWs. We studied 28 healthy physically active women aged between 18 to 30 years split equally into two groups according to BW: G1 (n = 14), BW between 2500 g and 3200 g and G2 (n = 14), BW > 3200 g. The groups remained seated at rest for 15 min, followed by aerobic exercise on a treadmill (five minutes at 50â55% of maximum HR and 25 min 60â65% of maximum HR) and then remained seated for 60 min during recovery from the exercise. Cardiorespiratory parameters and HR variability (HRV) [RMSSD, HF (ms2)] were assessed before and during recovery from exercise. In G1, HR was increased from 0 to 20 min after exercise whilst in G2 HR was higher from 0 to 7 min following exercise. In G1, short-term HRV was increased from 5 to 10 min after exercise but in G2 it recovered prior to 5 min following effort. In conclusion, healthy term-born women with low normal BW present slower HR autonomic recovery after exercise
A systematic review to investigate whether birth weight affects the autonomic nervous system in adulthood
Objective:
To evaluate the relationship between birth weight and the autonomic nervous system in adulthood through a systematic review.
Data source:
This is a systematic review of publications without limitation of year and language. We included studies involving the autonomic nervous system and birth weight in adults. Manuscripts were selected based on electronic searches of Medical Literature Analysis and Retrieval System Online (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL), Web of Science Cochrane Library and Scopus databases, using âAutonomic Nervous Systemâ OR âHeart Rateâ OR âHeart Rate Variabilityâ AND âBirth Weightâ as a search strategy. This review is registered on the International Prospective Register of Systematic Reviews â PROSPERO (ID: CRD42020165622).
Data synthesis:
We found 894 articles; 215 were excluded for duplicity. Of the remaining 679 studies, 11 remained. Two were excluded because they did not specifically treat the autonomic nervous system or birth weight. There were nine publications, two cohort and seven cross-sectional studies. The main findings were that extreme, very low, low or high birth weight may have some impact on the autonomic nervous system in adult life.
Conclusions:
Birth weight outside the normality rate may have a negative influence on the autonomic nervous system, causing autonomic dysfunction and increasing the risk of cardiovascular diseases in adult life. Thus, the importance of the follow-up of health professionals from pregnancy to gestation and throughout life, with preventive care being emphasized. =
Objetivo:
Avaliar a relação entre o peso ao nascer e o sistema nervoso autÎnomo na vida adulta por meio de uma revisão sistemåtica.
Fontes de dados:
Esta Ă© uma revisĂŁo sistemĂĄtica de publicaçÔes, sem limitação de ano e idioma. IncluĂmos estudos envolvendo o sistema nervoso autĂŽnomo e peso ao nascer em adultos. Os manuscritos foram selecionados das bases de dados eletrĂŽnicos Medical Literature Analysis and Retrieval System Online (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL), Web of Science Cochrane Library e Scopus, utilizando âAutonomic Nervous Systemâ OR âHeart Rateâ OR âHeart Rate Variabilityâ AND âBirth Weightâ como estratĂ©gia de busca. Esta revisĂŁo estĂĄ registrada pelo International Prospective Register of Systematic Reviews â PROSPERO (ID: CRD42020165622).
SĂntese dos dados:
NĂłs encontramos 894 artigos. Deles, 215 foram excluĂdos por duplicidade. Entre os 679 remanescentes, 11 permaneceram, dos quais dois foram excluĂdos por nĂŁo tratarem especificamente do sistema nervoso autĂŽnomo ou do peso ao nascer. Restaram nove publicaçÔes, sendo duas longitudinais e sete transversais. Os principais achados foram que o peso extremo baixo, muito baixo, baixo ou alto ao nascer pode ter algum impacto no sistema nervoso autĂŽnomo na vida adulta.
ConclusÔes:
O peso ao nascer fora da normalidade pode influenciar negativamente o sistema nervoso autĂŽnomo, causando disfunção autonĂŽmica e aumentando o risco de doenças cardiovasculares na vida adulta. Assim, ressalta-se a importĂąncia do acompanhamento dos profissionais de saĂșde desde a gravidez atĂ© a gestação, prĂ©-natal e ao longo da vida, com cuidados preventivos para esta situação
Slow breathing influences cardiac autonomic responses to postural maneuver Slow breathing and HRV
Chronic slow breathing has been reported to improve Heart Rate Variability (HRV) in patients with cardiovascular disorders. However, it is not clear regarding its acute effects on HRV responses on autonomic analysis. We evaluated the acute effects of slow breathing on cardiac autonomic responses to postural change manoeuvre (PCM). The study was conducted on 21 healthy male students aged between 18 and 35 years old. In the control protocol, the volunteer remained at rest seated for 15 min under spontaneous breathing and quickly stood up within 3 s and remained standing for 15 min. In the slow breathing protocol, the volunteer remained at rest seated for 10 min under spontaneous breath, then performed slow breathing for 5 min and rapidly stood up within 3 s and remained standing for 15 min. Slow breathing intensified cardiac autonomic responses to postural maneuver. (C) 2016 Elsevier Ltd. All rights reserved.CNPqCentro de Estudos do Sistema Nervoso AutĂŽnomo (CESNA), Departamento de Fisioterapia e Terapia Ocupacional, Faculdade de Filosofia e CiĂȘncias, UNESP, MarĂlia, SP, BrazilCardiorespiratory Research Group, Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Gipsy Lane, Oxford OX3 0BP, United KingdomDisciplina de Cardiologia, Departamento de Medicina, UNIFESP, SĂŁo Paulo, SP, BrazilDepartment of Environmental Health, Harvard Medical School of Public Health, Boston, MA, United StatesCentro de Estudos do Sistema Nervoso AutĂŽnomo (CESNA), Programa de PĂłs-Graduação em Fisioterapia, Faculdade de CiĂȘncias e Tecnologia, UNESP, Presidente Prudente, SP, BrazilDisciplina de Cardiologia, Departamento de Medicina, UNIFESP, SĂŁo Paulo, SP, BrazilCNPq: 29360Web of Scienc
Efeitos do Treinamento AutĂłgeno sobre a variabilidade da frequĂȘncia cardĂaca na perspectiva dos Ăndices nĂŁo lineares
Objetivo: El presente estudio tuvo como objetivo analizar los efectos de una tĂ©cnica de relajaciĂłn denominada entrenamiento autĂłgeno, sobre la variabilidad no lineal de la frecuencia cardĂaca, con la hipĂłtesis de que la relajaciĂłn en cuestiĂłn es capaz de promover una mayor sinergia entre los sistemas nerviosos simpĂĄtico y parasimpĂĄtico,evitando asĂ altos niveles de estrĂ©s y futuras complicaciones. MĂ©todos: Se llevó a cabo un estudio clĂnico transversal, controlado, no aleatorizado, abierto, con 19 participantes que realizaron una sola sesiĂłn de entrenamiento autĂłgeno. Resultados: Los resultados muestran que ambos os grupos (experimental y placebo) tuvieron un valor de p <0,05 y, en ocasiones, marginalmente significativo. Esta consecuencia lleva a la siguiente pregunta: Âżel entrenamiento autĂłgeno proporciona un estado de relajaciĂłn solo por el efecto placebo? ConclusiĂłn: De acuerdo con el estudio, se concluye que durante el entrenamiento autĂłgeno no hubo aumento en la respuesta caĂłtica, y no hubo mejorĂa en la sinergia entre los sistemas nerviosos simpĂĄtico y parasimpĂĄtico. =
Objective: The present study intended to analyze the effects of a relaxation technique called autogenic training, on nonlinear heart rate variability, with the hypothesis that the relaxation in question is capable of promotegreater synergism between the sympathetic and the parasympathetic nervous system, thus avoiding high levels of stress and future complications. Methods: To this end, a controlled, non-randomized, open and cross-sectional clinical study was conducted, with19 participants who underwent a single session of autogenic training. Results: The results show that both groups (experimental and placebo) had p-value<0.05 and sometimes marginally significant. This consequence instigates the following question: does autogenic training AT provide a state of relaxation only by reason of the placebo effect? Conclusion: According to the study, it is concluded that during the autogenic training there was no increase in the chaotic response, in addition to no improvement in the synergism between the sympathetic and the parasympathetic nervous system
The risk of COVID-19 death is much greater and age dependent with type I IFN autoantibodies
International audienceSignificance There is growing evidence that preexisting autoantibodies neutralizing type I interferons (IFNs) are strong determinants of life-threatening COVID-19 pneumonia. It is important to estimate their quantitative impact on COVID-19 mortality upon SARS-CoV-2 infection, by age and sex, as both the prevalence of these autoantibodies and the risk of COVID-19 death increase with age and are higher in men. Using an unvaccinated sample of 1,261 deceased patients and 34,159 individuals from the general population, we found that autoantibodies against type I IFNs strongly increased the SARS-CoV-2 infection fatality rate at all ages, in both men and women. Autoantibodies against type I IFNs are strong and common predictors of life-threatening COVID-19. Testing for these autoantibodies should be considered in the general population
The risk of COVID-19 death is much greater and age dependent with type I IFN autoantibodies
International audienceSignificance There is growing evidence that preexisting autoantibodies neutralizing type I interferons (IFNs) are strong determinants of life-threatening COVID-19 pneumonia. It is important to estimate their quantitative impact on COVID-19 mortality upon SARS-CoV-2 infection, by age and sex, as both the prevalence of these autoantibodies and the risk of COVID-19 death increase with age and are higher in men. Using an unvaccinated sample of 1,261 deceased patients and 34,159 individuals from the general population, we found that autoantibodies against type I IFNs strongly increased the SARS-CoV-2 infection fatality rate at all ages, in both men and women. Autoantibodies against type I IFNs are strong and common predictors of life-threatening COVID-19. Testing for these autoantibodies should be considered in the general population