Global Chaotic Parameters of Heart Rate Variability During Mental Task

Autor(es)

Fontes, Anne M. G. ; Garner, David M. ; De Abreu, Luiz Carlos ; Barbosa, Juliana C. ; De Assis, Elisangela Vilar ; De Souza, Ana Cecilia A. ; Porto, Andrey A. ; Valenti, Vitor E.

• Tipo de documento: Artigo Científico
• Fonte: COMPLEXITY; v. 21, n. 5, p. 300-307, MAY-JUN 2016.
• Citações Web of Science: 2

Resumo

We aimed to evaluate the novel chaotic global techniques of heart rate variability (HRV) analysis during a specific autonomic test, the mental arithmetic overload test. These are spectral detrended fluctuation analysis and spectral multi-taper method; in addition to spectral entropy. We analyzed 24 healthy male students-all nonsmokers, aged between 18 and 22 years old. HRV was analyzed in the following periods: control protocol-the 10-min periods before the performance of the task and the 5-min periods during the performance of the test. Following tests for normality; Kruskal-Wallis technique and principal component analysis-it was decided that this type ofmental stimulation did not lead to significant changes in any of the seven combinations of chaotic globals. In conclusion, it was suggested that the time-series be increased to 1000 RR intervals (at least 20 min of electrocardiographic data) and standard nonlinear methods be introduced in combination with spectral factors as a way of increasing the statistical significance. (C) 2015 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 13/05102-6 - Comportamento dos índices geométricos da variabilidade da frequência cardíaca durante o teste de sobrecarga aritmética mental após a exposição ao estímulo auditivo musical em homens
• Beneficiário: Anne Michelli Gomes Gonçalves Fontes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica