Nonlinear Analysis of Heart Rate Variability: A Comprehensive
Review

Godoy, Moacir Fernandes de

doi:10.17554/j.issn.2309-6861.2016.03.101-4

Cited by 78 publications

(37 citation statements)

References 34 publications

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“…Nonlinear indices representing parasympathetic modulation and overall HRV variability were instantaneous beat-to-beat variability (SD1) and continuous beat-to-beat variability (SD2), with approximate entropy and sample entropy representing HRV complexity [17].…”

Section: Methodsmentioning

confidence: 99%

Music therapy intervention in cardiac autonomic modulation, anxiety, and depression in mothers of preterms: randomized controlled trial

et al. 2018

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BackgroundMothers of preterm infants often have symptoms of anxiety and depression, recognized as risk factors for the development of cardiovascular diseases and associated with low rates of heart rate variability (HRV). This study aimed to evaluate the influence of music therapy intervention on the autonomic control of heart rate, anxiety, and depression in mothers.MethodsProspective randomized clinical trial including 21 mothers of preterms admitted to the Neonatal Intensive Care Unit of a tertiary hospital, recruited from August 2015 to September 2017, and divided into control group (CG; n = 11) and music therapy group (MTG; n = 10). Participants underwent anxiety and depression evaluation, as well as measurements of the intervals between consecutive heartbeats or RR intervals for the analysis of HRV at the first and the last weeks of hospitalization of their preterms. Music therapy sessions lasting 30–45 min were individually delivered weekly using receptive techniques. The mean and standard deviation of variables were obtained and the normality of data was analyzed using the Kolmogorov-Smirnov test. The paired sample t-test or Wilcoxon test were employed to calculate the differences between variables before and after music therapy intervention. The correlations anxiety versus heart variables and depression versus heart variables were established using Spearman correlation test. Fisher’s exact test was used to verify the differences between categorical variables. A significance level of p < 0.05 was established. Statistical analysis were performed using the Statistical Package for the Social Sciences, version 20.ResultsParticipants in MTG had an average of seven sessions of music therapy, and showed improvement in anxiety and depression scores and autonomic indexes of the time domain (p < 0.05). Significant correlations were found between depression and parasympathetic modulation using linear (r = − 0.687; p = 0.028) and nonlinear analyses (r = − 0.689; p = 0.027) in MTG.ConclusionMusic therapy had a significant and positive impact on anxiety and depression, acting on prevention of cardiovascular diseases, major threats to modern society.Trial registrationBrazilian Registry of Clinical Trials (no. RBR-3x7gz8). Retrospectively registered on November 17, 2017.

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Section: Methodsmentioning

confidence: 99%

Music therapy intervention in cardiac autonomic modulation, anxiety, and depression in mothers of preterms: randomized controlled trial

et al. 2018

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“…This is because the mechanisms involved in cardiovascular physiology interact with each other in a nonlinear way [6]. Furthermore, methods related to nonlinear behavior of HRV were reported to present clinical relevance and to offer improved interpretation about these pathological mechanisms [7,8].…”

Section: Introductionmentioning

confidence: 99%

Linear and Complex Measures of Heart Rate Variability during Exposure to Traffic Noise in Healthy Women

et al. 2018

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Previous studies have described significant impact of different types of noise on the linear behavior of heart rate variability (HRV). However, there are few studies regarding the complexity of HRV during exposure to traffic noise. In this study, we evaluated the complexity of HRV during traffic noise exposure. We analyzed 31 healthy female students aged between 18 and 30 years. Volunteers remained at rest seated under spontaneous breathing during 10 minutes with an earphone turned off, and then they were exposed to traffic noise through an earphone for a period of 10 minutes. The traffic noise was recorded from a very busy city street and the sound was comprised of car, bus, and trucks engines and horn (71-104 dB). We observed no significant changes in the linear analysis of HRV. CFP3 (Cohen's = 1.28, large effect size) and CFP6 (Cohen's = 1.11, large effect size) parameters of chaotic global analysis and Shannon (Cohen's = 1.13, large effect size), Renyi (Cohen's = 1.06, large effect size), and Tsallis (Cohen's = 1.14, large effect size) entropies significantly increased ( < 0.005) during traffic noise exposure. In conclusion, traffic noise under laboratory conditions increased the complexity of HRV through chaotic global analysis and some measures of entropy in healthy females.

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“…HRV also reflects, at least partly, the fitness level and daily readiness [243,244,[251][252][253][254][255] of an individual, as well as the organismic demands [256][257][258][259][260]. There are numerous non-linear analysis approaches to appraise HRV, which reflect the systemic character of the organism [245,248,249,[261][262][263]. Moreover, HRV is linked to cognitive performance in specific cognitive domains (e.g., during a resting state) [245,[264][265][266][267][268][269][270][271][272][273] and it is, as outlined in the neurovisceral integration model, associated with the integrity of specific subareas of the PFC (e.g., medial PFC) [247,[273][274][275][276][277][278][279][280].…”

Section: Which Additional Internal Load Indicators Should Be Recordedmentioning

confidence: 99%

New Directions in Exercise Prescription: Is There a Role for Brain-Derived Parameters Obtained by Functional Near-Infrared Spectroscopy?

et al. 2020

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In the literature, it is well established that regular physical exercise is a powerful strategy to promote brain health and to improve cognitive performance. However, exact knowledge about which exercise prescription would be optimal in the setting of exercise–cognition science is lacking. While there is a strong theoretical rationale for using indicators of internal load (e.g., heart rate) in exercise prescription, the most suitable parameters have yet to be determined. In this perspective article, we discuss the role of brain-derived parameters (e.g., brain activity) as valuable indicators of internal load which can be beneficial for individualizing the exercise prescription in exercise–cognition research. Therefore, we focus on the application of functional near-infrared spectroscopy (fNIRS), since this neuroimaging modality provides specific advantages, making it well suited for monitoring cortical hemodynamics as a proxy of brain activity during physical exercise.

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Nonlinear Analysis of Heart Rate Variability: A Comprehensive Review

Cited by 78 publications

References 34 publications

Music therapy intervention in cardiac autonomic modulation, anxiety, and depression in mothers of preterms: randomized controlled trial

Music therapy intervention in cardiac autonomic modulation, anxiety, and depression in mothers of preterms: randomized controlled trial

Linear and Complex Measures of Heart Rate Variability during Exposure to Traffic Noise in Healthy Women

New Directions in Exercise Prescription: Is There a Role for Brain-Derived Parameters Obtained by Functional Near-Infrared Spectroscopy?

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