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

Autor(es)

Garner, David M. ^[1] ; Vanderlei, Franciele M. ^[2] ; Valenti, Vitor E. ^[3] ; Vanderlei, Luiz Carlos M. ^[2]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: CARDIOLOGY IN THE YOUNG; v. 29, n. 9, p. 1196-1201, SEP 2019.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 08/05414-0 - Análise dos índices de variabilidade da frequência cardíaca em crianças obesas
• Beneficiário: Luiz Carlos Marques Vanderlei
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/20657-5 - Eficácia de protocolos de estratificação e parâmetros clínicos, físicos e bioquímico em prever intercorrências em programas de reabilitação cardiovascular
• Beneficiário: Luiz Carlos Marques Vanderlei
• Modalidade de apoio: Auxílio à Pesquisa - Regular