| Full text | |
| Author(s): |
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.
Total Authors: 8
|
| Document type: | Journal article |
| Source: | COMPLEXITY; v. 21, n. 5, p. 300-307, MAY-JUN 2016. |
| Web of Science Citations: | 2 |
| Abstract | |
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) | |
| FAPESP's process: | 13/05102-6 - Behavior of the geometric indices of heart rate variability during mental arithmetic test overload after exposure to musical auditory stimulation in men |
| Grantee: | Anne Michelli Gomes Gonçalves Fontes |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |