title: Slow breathing influences cardiac autonomic responses to postural maneuver: Slow breathing and HRV.
abstract: 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.
authors.affiliation: Centro de Estudos do Sistema Nervoso Autônomo (CESNA), Departamento de Fisioterapia e Terapia Ocupacional, Faculdade de Filosofia e Ciências, UNESP, Marília, SP, Brazil.
authors.forename: Giovanna Ana de Paula
authors.initials: GA
authors.lastname: Vidigal
authors.affiliation: Centro de Estudos do Sistema Nervoso Autônomo (CESNA), Departamento de Fisioterapia e Terapia Ocupacional, Faculdade de Filosofia e Ciências, UNESP, Marília, SP, Brazil.
authors.forename: Bruna S
authors.initials: BS
authors.lastname: Tavares
authors.affiliation: Cardiorespiratory Research Group, Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Gipsy Lane, Oxford OX3 0BP, United Kingdom.
authors.forename: David M
authors.initials: DM
authors.lastname: Garner
authors.affiliation: Disciplina de Cardiologia, Departamento de Medicina, UNIFESP, São Paulo, SP, Brazil.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Porto
authors.affiliation: Department of Environmental Health, Harvard Medical School of Public Health, Boston, MA, United States.
authors.forename: Luiz
authors.initials: L
authors.lastname: Carlos de Abreu
authors.affiliation: Disciplina de Cardiologia, Departamento de Medicina, UNIFESP, São Paulo, SP, Brazil.
authors.forename: Celso
authors.initials: C
authors.lastname: Ferreira
authors.affiliation: Centro de Estudos do Sistema Nervoso Autônomo (CESNA), Programa de Pós-Graduação em Fisioterapia, Faculdade de Ciências e Tecnologia, UNESP, Presidente Prudente, SP, Brazil. Electronic address: vitor.valenti@marilia.unesp.br.
authors.forename: Vitor E
authors.initials: VE
authors.lastname: Valenti
mesh_terms: D000293:Adolescent; D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology*; D001945:Breathing Exercises; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D011187:Posture / Q000502:physiology*; D055815:Young Adult
keywords: Autonomic nervous system; Cardiovascular system; Complementary therapy; Respiration