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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Non-linear regulation of cardiac autonomic modulation in obese youths: interpolation of ultra-short time series

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Author(s):
Garner, David M. [1] ; Vanderlei, Franciele M. [2] ; Valenti, Vitor E. [3] ; Vanderlei, Luiz Carlos M. [2]
Total Authors: 4
Affiliation:
[1] Oxford Brookes Univ, Fac Hlth & Life Sci, Dept Biol & Med Sci, Cardiorespiratory Res Grp, Oxford - England
[2] Sao Paulo State Univ, UNESP, Dept Physiotherapy, Presidente Prudente - Brazil
[3] Sao Paulo State Univ, UNESP, Auton Nervous Syst Ctr, Presidente Prudente - Brazil
Total Affiliations: 3
Document type: Journal article
Source: CARDIOLOGY IN THE YOUNG; v. 29, n. 9, p. 1196-1201, SEP 2019.
Web of Science Citations: 0
Abstract

Background: In this study, we applied ultra-short time series of interbeat intervals (RR-intervals) to evaluate heart rate variability through default chaotic global techniques with the purpose of discriminating obese youths from non-obese youth patients. Method: Chaotic global analysis of the RR-intervals from the electrocardiogram and pre-processing adjustments was undertaken. The effect of cubic spline interpolations was assessed, while the spectral parameters remained fixed. Exactly, 125 RR-intervals of data were recorded. Results: CFP1, CFP3, and CFP6 were the only significant combinations of chaotic globals when the standard conditions were enforced and at the level p<0.01 (or <1%). These significances were acheived via Kruskal-Wallis and Cohen's d(s) effects sizes tests of significance after Anderson-Darling and Lilliefors statistical tests indicated non-normal distributions in the majority of cases. Adjustments of the cubic spline interpolation from 1 to 13 Hz were revealed to be inconsequential when measured by Kruskal-Wallis and Cohen's d(s), regarding the outcome between the two datasets. Conclusion: Chaotic global analysis was offered as a robust technique to distinguish autonomic dysfunction in obese youths. It can discriminate the two different groups using ultra-short data lengths, and no cubic spline interpolations need be applied. (AU)

FAPESP's process: 08/05414-0 - Analysis of heart rate variability indices in obese children
Grantee:Luiz Carlos Marques Vanderlei
Support Opportunities: Regular Research Grants
FAPESP's process: 17/20657-5 - Eficacy of stratification protocols and clinical, physical and biochemists parameters in prection of intercorrences in cardiovascular rehabilitation programs
Grantee:Luiz Carlos Marques Vanderlei
Support Opportunities: Regular Research Grants