Reproducibility of Heart Rate Variability Indices at Post-maximal Exercise

2020 ◽  
Vol 41 (08) ◽  
pp. 512-519 ◽  
Author(s):  
Jaqueline Alves Araújo ◽  
Tiago Peçanha ◽  
Fabiula Isoton Novelli ◽  
César Siqueira Aleixes Mello ◽  
Daniel Moreira-Gonçalves ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Coefficient Of Variation ◽  
Maximal Exercise ◽  
High Reliability ◽  
Active Recovery ◽  
Coefficient Corrélation ◽  
Agreement Coefficient ◽  
The Time Domain ◽  
Good Agreement

AbstractTo analyze whether heart rate variability is reproducible after maximal exercise, 11 men (22.1±3.2 years) performed four incremental exercise tests followed by passive or active recovery. There was high reliability (intraclass coefficient correlation: 0.72–0.96) and fair-to-excellent agreement (coefficient of variation: 7.81–22.09%) in passive recovery, as well as moderate-to-high reliability (intraclass coefficient correlation: 0.50–0.87) and good agreement (coefficient of variation: 11.08–20.89%) in active recovery for LnRMSSD index. There was moderate-to-high reliability (intraclass coefficient correlation: 0.51–0.81) and good agreement (coefficient of variation: 10.41–18.87%) in most of the analyzed time points, in both recovery types for LnSDNN. In both types of recovery, the time domain heart rate variability 5–10 min indices (passive: intraclass coefficient correlation : 0.87–0.88; coefficient of variation: 7.67–13.44%; active: intraclass coefficient correlation 0.59–0.80; coefficient of variation: 14.62–16.26%) presented higher intraclass coefficient correlation and lower coefficient of variation than the spectral heart rate variability indices (passive: intraclass coefficient correlation: 0.71–0.87; coefficient of variation: 12.33–34.21%; active: intraclass coefficient correlation: 0.46–0.77; coefficient of variation: 24.41–105.12%). The LnRMSSD and LnSDNN indices analyzed in 30 s segments and the heart rate variability 5–10 min indices after maximal exercise in untrained healthy men showed satisfactory reproducibility, regardless of the type of recovery, with the time-domain indices showing higher reproducibility than the frequency-domain indices.

Comparison of Linear and Nonlinear HRV Dynamics Across Exercise Intensities After Menopause

2020 ◽  
Vol 28 (1) ◽  
pp. 149-154
Author(s):  
Julia C. Orri ◽  
Elizabeth M. Hughes ◽  
Deepa G. Mistry ◽  
Antone Scala
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Exercise Training ◽  
Postmenopausal Women ◽  
Maximal Exercise ◽  
Exercise Recovery ◽  
Active Recovery ◽  
Vigorous Exercise ◽  
Main Effect ◽  
Linear And Nonlinear

The authors compared the linear and nonlinear heart rate variability dynamics from rest through maximal exercise in postmenopausal women who trained at either moderate or high intensities. The outcome variables included the RR triangular index, TINN, SD1, SD2, SD1/SD2, DFA α1, DFA α2, and α1/α2. Maximal exercise reduced SD1, SD2, DFA α1, DFA α2, α1/α2, RRTri, and TINN in both groups and increased SD1/SD2 (p < .05). Two minutes of active recovery produced significant increases in SD1, SD2, DFA α1, and TINN, compared with exercise in both groups (p < .0001). There was also a significant main effect between groups for RRTri during exercise recovery, with the moderate group achieving higher levels (p < .04). The authors have shown that both moderate and vigorous exercise training can lead to a healthy response to maximal exercise and recovery, with the moderate group having a slightly improved recovery in the triangular index.

scholarly journals Analysis of heart rate variability in corn snakes (Pantherophis guttatus)

2021 ◽  
Vol 10 (11) ◽  
pp. e294101119781
Author(s):  
Antonio Gomes da Silva Neto ◽  
Daniel Souza Ferreira Magalhães ◽  
Raduan Hage ◽  
Laurita dos Santos ◽  
José Carlos Cogo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Low Frequency ◽  
Autonomic Nervous ◽  
Rr Interval ◽  
Diagnosis And Prognosis ◽  
Frequency Domains ◽  
The Time Domain

The assessment of heart rate variability (HRV) by linear methods in conjunction with Poincaré plots can be useful for evaluating cardiac regulation by the autonomic nervous system and for the diagnosis and prognosis of heart disease in snakes. In this report, we describe an analysis of HRV in conscious adult corn snakes Pantherophis guttatus (P. guttatus).  The electrocardiogram (ECG) parameters were determined in adult corn snakes (8 females, 13 males) and used for HRV analysis, and the RR interval was analyzed by linear methods in the time and frequency domains. There was no sex-related difference in heart rate. However, significant differences were seen in the duration of the P, PR, and T waves and QRS complex; there was no difference in the QT interval. The values for the RR interval varied by 15.3% and 18.8% in male and female snakes, respectively, and there was considerable variation in the values for the high and low frequency domains. The changes in the time domain were attributed to regulation by the parasympathetic branch of the autonomic nervous system, in agreement with variations in the high and low frequency domains. The values for standard deviations 1 and 2 in Poincaré plots, as well as the values of the frequency domain, provide useful parameters for future studies of cardiac function in P. guttatus.

Correction: Reproducibility of Heart Rate Variability Indices at Post-maximal Exercise

2020 ◽  
Author(s):  
Jaqueline Alves Araújo ◽  
Tiago Peçanha ◽  
Fabiula Isoton Novelli ◽  
César Siqueira Aleixes Mello ◽  
Daniel Moreira-Gonçalves ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Maximal Exercise

Heart Rate Variability During Acute Recovery from Maximal Exercise; Utility of a Nonlinear Dynamics Approach

2017 ◽  
Vol 49 (5S) ◽  
pp. 720 ◽  
Author(s):  
Nathaniel Berry ◽  
James Janssen ◽  
Jessica Dollar ◽  
Cheryl Lovelady ◽  
Susan Calkins ◽  
...  
Keyword(s):  
Nonlinear Dynamics ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Maximal Exercise

scholarly journals Bilateral Hegu Acupoints Have the Same Effect on the Heart Rate Variability of the Healthy Subjects

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Wang Guangjun ◽  
Tian Yuying ◽  
Jia Shuyong ◽  
Zhou Wenting ◽  
Zhang Weibo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Subjects ◽  
Scientific Evidence ◽  
The Body ◽  
Acupuncture Points ◽  
Group I ◽  
Study Results ◽  
Group Ii ◽  
The Time Domain

Background. The specificity of acupuncture points (acupoints) is one of the key concepts in traditional acupuncture theory, but the question of whether there is adequate scientific evidence to prove or disprove specificity has been vigorously debated in recent years. Acupoint laterality is an important aspect of acupoint specificity. Data is particularly scarce regarding the laterality of the same channel, namesake acupoint located on opposite sides of the body. Our previous study results suggest that Neiguan acupoint (PC6) has the laterality. The aim of this study was to investigate whether Hegu (LI4) also has laterality from the perspective of heart rate variability.Methods. A total of twenty-eight healthy female volunteers were recruited for this study and were randomly separated into the group I (n=14) and the group II (n=14) according to the register order. In the group I, left LI4 was stimulated in the first epoch and the right LI4 was stimulated in the second epoch. In the group II, right LI4 was stimulated in the first epoch and left LI4 was stimulated in the second epoch. Electrocardiogram was recorded and heart rate variability was analyzed.Results. The results show that there were no significant differences of heart rate variablity between the group I and the group II in the time domain and in the frequency domain.Conclusions. Bilateral Hegu acupoints have the same effect on the heart rate variability of the healthy subjects.

Temporal sequence of recovery-related events following maximal exercise assessed by heart rate variability and blood lactate concentration

2016 ◽  
Vol 37 (5) ◽  
pp. 536-543 ◽  
Author(s):  
Rosangela Akemi Hoshi ◽  
Luiz Carlos Marques Vanderlei ◽  
Moacir Fernandes de Godoy ◽  
Fábio do Nascimento Bastos ◽  
Jayme Netto ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Blood Lactate ◽  
Maximal Exercise ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Temporal Sequence

Time domain parameters of heart rate variability in children born as small-for-gestational age

2016 ◽  
Vol 27 (4) ◽  
pp. 663-670 ◽  
Author(s):  
Agata Zamecznik ◽  
Jerzy Stańczyk ◽  
Agnieszka Wosiak ◽  
Katarzyna Niewiadomska-Jarosik
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Gestational Age ◽  
Time Domain ◽  
Small For Gestational Age ◽  
Age Group ◽  
Lower Heart Rate ◽  
Appropriate For Gestational Age ◽  
The Time Domain

AbstractAccording to metabolic programming theory, small-for-gestational age patients are at high risk of cardiovascular diseases also because of the possible malfunction of the autonomic nervous system. Autonomic disorders can be assessed by heart rate variability. The aims of this study were to compare time domain parameters of heart rate variability in children born as small-for-gestational age and appropriate-for-gestational age and to assess the correlation of the postnatal and current somatic parameters with the time domain parameters. The small-for-gestational age group consisted of 68 children aged 5–10 years who were born with birth weight below the 10th percentile. The appropriate-for-gestational age group consisted of 30 healthy peers, matched in terms of gender and age. On the basis of Holter monitoring, slightly higher average heart rate was observed in the small-for-gestational age group than in the appropriate-for-gestational age group. It was found that all the time domain parameters (SDNN, SDNNi, SDANNi, rMSSD, pNN50) were lower in the small-for-gestational age group than in the appropriate-for-gestational age group. In the small-for-gestational age group, girls had lower heart rate and some of the heart rate variability parameters (SDNN, SDNNi, SDANNi) in comparison with boys.Children born as small-for-gestational age have impaired function of the autonomic nervous system. Moreover, in the small-for-gestational age group, autonomic balance moved towards the sympathetic component, which was evidenced by higher heart rate. Children with faster heart rate and lower heart rate variability parameters may be at risk of cardiovascular disease.

Assessment of Heart Rate Variability After Maximal Exercise in Trained Postmenopausal Women

2017 ◽  
Vol 49 (5S) ◽  
pp. 900
Author(s):  
Julia C. Orri ◽  
Elizabeth M. Hughes ◽  
Deepa G. Mistry ◽  
Antone H. Scala
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Postmenopausal Women ◽  
Maximal Exercise

Experimental Study on Biomedical Signal Acquisition of Sports Fatigue

2020 ◽  
Vol 10 (4) ◽  
pp. 884-889
Author(s):  
Mingli Chi
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Maximal Exercise ◽  
Processing System ◽  
Future Application ◽  
Signal Acquisition ◽  
Biomedical Signal ◽  
Fatigue Exercise ◽  
Exercise Induced ◽  
Exercise Fatigue

To explore the biomedical signal acquisition of sports fatigue, the Pclab-UE biomedical signal acquisition and processing system is used to collect and process heart rate variability (HRV) automatically after quiet and fatigue exercise. In the meanwhile, the experimental data are analyzed. The heart rate variability of the subjects is recorded, aiming to provide experimental evidence for the future application of HRV in the diagnosis of exercise fatigue. Moreover, it also provides a noninvasive diagnostic index for exercise fatigue and exercise training practice. The research results showed that, the HRV values in the sub-maximal exercise caused fatigue. The maximal exercise induced fatigue is significantly decreased and there are significant differences. As a result, it is summed up that we can use HRV as a quantitative analysis index for the diagnosis of sports fatigue.

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