Key result
Youth obesity significantly increases the chaotic response of heart rate variability as measured by the novel chaotic global parameter CFP1 (p < 0.0001).
Why the study?
Does youth obesity alter heart rate dynamics as assessed by novel chaotic global parameters of heart rate variability?
Cross-Sectional (n=86)
Does youth obesity alter heart rate dynamics as assessed by novel chaotic global parameters of heart rate variability?
p-value: p=<0.0001
Youth obesity is associated with an increased chaotic response in heart rate dynamics, suggesting autonomic alterations that can be quantified using novel chaotic global parameters.
May signal early autonomic changes in obese youth; hypothesis-generating for CFP1 in risk stratification.
Objective: this study aimed to assess the heart rate dynamics in young obese subjects by novel chaotic globals to HRV. Methods: eighty-six young subjects were distributed in two equal groups (n = 43) according to the nutritional status: obese and control following Body Mass Index. For the analysis of HRV indexes, the heart rate was recorded heartbeat to heartbeat with the young resting in dorsal (prone) position for 30 minutes. Results: after Anderson-Darling and Lilliefors tests, the data was deemed non-normal. So, Kruskal-Wallis test of significance was applied for the statistical analysis, level set at (p < 0.01). Principal Component Analysis (PCA) identified two components represented 100% of total variance. The algorithm which applies all three parameters is suggested as the most influential and statistically very significant at the level (p < 0.001); it also elevates the chaotic response. Conclusion: youth obesity increases the chaotic response. The reasons for the study include quantitative assessment to allow effective dietary, pharmacological or even surgical intervention in the condition.
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Vanderlei et al. (2015) conducted a cross-sectional in Obesity (n=86). Obesity vs. Normal weight (control) was evaluated on Heart rate dynamics assessed by Chaotic Forward Parameter 1 (CFP1) (p=<0.0001). Youth obesity significantly increases the chaotic response of heart rate variability as measured by the novel chaotic global parameter CFP1 (p < 0.0001).
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