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330 results for “heart rate variability;”
Physical Activity, Inflammatory Markers and Heart Rate Variability
<p>A dataset used to assess the associations between physical activity, sedentary time and inflammatory/oxidative stress markers, and heart rate variability and recovery while controlling for several potential confounders.</p>
Change of Heart Rate Variability and Baroreflex Sensitivity After Ventral Cardiac Denervation
ClinicalTrials.gov study NCT00190112. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Decomposing the complexity of heart-rate variability by the multifractal–multiscale approach to detrended fluctuation analysis: an application to low-level spinal cord injury
<p>Raw data for reproducing (figure 2) and the main results of the paper: doi: 10.1088/1361-6579/ab2b4a</p>
Analysis of heart-rate variability during angioedema attacks in patients with hereditary c1-inhibitor deficiency
<p>Database from the article Perego F, De Maria B, Bova M, Petraroli A, Marcelli Cesoni A, De Grazia V, Zingale LC, Porta A, Spadaro G, Dalla Vecchia LA. Analysis of Heart-Rate Variability during Angioedema Attacks in Patients with Hereditary C1-Inhibitor Deficiency. Int J Environ Res Public Health. 2021 Mar 12;18(6):2900. doi: 10.3390/ijerph18062900. PMID: 33809031; PMCID: PMC8002127.</p> <p>Abstract</p> <p>C1-inhibitor hereditary angioedema (C1-INH-HAE) is a rare disease characterized by self-limiting edema associated with localized vasodilation due to increased levels of circulating bradykinin. C1-INH-HAE directly influences patients' everyday lives, as attacks are unpredictable in frequency, severity, and the involved anatomical site. The autonomic nervous system could be involved in remission. The cardiac autonomic profile has not yet been evaluated during the attack or prodromal phases. In this study, a multiday continuous electrocardiogram was obtained in four C1-INH-HAE patients until attack occurrence. Power spectral heart rate variability (HRV) indices were computed over the 4 h preceding the attack and during the first 4 h of the attack in three patients. Increased vagal modulation of the sinus node was detected in the prodromal phase. This finding may reflect localized vasodilation mediated by the release of bradykinin. HRV analysis may furnish early markers of an impending angioedema attack, thereby helping to identify patients at higher risk of attack recurrence. In this perspective, it could assist in the timing, titration, and optimization of prophylactic therapy, and thus improve patients' quality of life.</p>
Symbolic Analysis of the Heart Rate Variability During the Plateau Phase Following Maximal Sprint Exercise.
<p>Dataset from Storniolo JL, Cairo B, Porta A, Cavallari P. Symbolic Analysis of the Heart Rate Variability During the Plateau Phase Following Maximal Sprint Exercise. Front Physiol. 2021 Mar 23;12:632883. doi: 10.3389/fphys.2021.632883. PMID: 33833687; PMCID: PMC8021730.</p> <p>Cardiac autonomic control is commonly assessed <em>via</em> the analysis of fluctuations of the temporal distance between two consecutive R-waves (RR). Cardiac regulation assessment following high intensity physical exercise is difficult due to RR non-stationarities. The very short epoch following maximal sprint exercise when RR remains close to its lowest value, i.e., the PLATEAU, provides the opportunity to evaluate cardiac regulation from stationary RR sequences. The aim of the study is to evaluate cardiac autonomic control during PLATEAU phase following 60-m maximal sprint and compare the results to those derived from sequences featuring the same length as the PLATEAU and derived from pre-exercise and post-exercise periods. These sequences were referred to as PRE and POST sequences. RR series were recorded in 21 subjects (age: 24.9 ± 5.1 years, 15 men and six women). We applied a symbolic approach due to its ability to deal with very short RR sequences. The symbolic approach classified patterns formed by three RRs according to the sign and number of RR variations. Symbolic markers were compared to more classical time and frequency domain indexes. Comparison was extended to simulated signals to explicitly evaluate the suitability of methods to deal with short variability series. A surrogate test was applied to check the null hypothesis of random fluctuations. Over simulated data symbolic analysis was able to separate dynamics with different spectral profiles provided that the frame length was longer than 10 cardiac beats. Over real data the surrogate test indicated the presence of determinism in PRE, PLATEAU, and POST sequences. We found that the rate of patterns with two variations with unlike sign increased during PLATEAU and in POST sequences and the frequency of patterns with no variations remained unchanged during PLATEAU and decreased in POST compared to PRE sequences. Results indicated a sustained sympathetic control along with an early vagal reactivation during PLATEAU and a shift of the sympathovagal balance toward vagal predominance in POST compared to PRE sequences. Time and frequency domains markers were less powerful because they were dominated by the dramatic decrease of RR variance during PLATEAU.</p>
How the first years of motherhood impact the cardiac autonomic profile of female healthcare professionals: a study by heart rate variability analysis.
<p>Dataset from Dalla Vecchia LA, De Maria B, Cassetti G, Clementi L, De Grazia V, Perego F, Porta A. How the first years of motherhood impact the cardiac autonomic profile of female healthcare professionals: a study by heart rate variability analysis. Sci Rep. 2021 Apr 14;11(1):8161. doi: 10.1038/s41598-021-87596-y. PMID: 33854133; PMCID: PMC8047021.</p> <p>Abstract</p> <p>The conciliation between career and family is a relevant issue for working women, in particular during the first years of motherhood. Data about the state of the cardiac autonomic regulation in working women with preschoolers are lacking. Aim of this study was to compare the cardiac autonomic profile of female healthcare professionals with and without preschoolers via the analysis of the variability of the time distance between two consecutive R-wave peaks (RR) from standard 24-h Holter electrocardiogram (ECG). Fifty healthy active female healthcare professionals were enrolled: 25 with at least one preschooler (W_KID) and 25 without (W_NOKID). A standard Holter ECG was obtained during a regular working day. Segments of 5000 consecutive RRs were selected during daytime (DAY) and nighttime (NIGHT). Heart rate variability analysis was performed and the following parameters were considered for comparison between the two groups: mean (μ<sub>RR</sub>), variance (σ<sup>2</sup><sub>RR</sub>), and the absolute power in high frequency component (HF) of RR (HF<sub>RR</sub>) series. HF<sub>RR</sub> was considered as a marker of vagal cardiac modulation. Only µ<sub>RR</sub> significantly increased from DAY to NIGHT in both groups (699 ± 88 vs 887 ± 140 ms in W_KID and 728 ± 90 vs 942 ± 166 ms in W_NOKID). Instead, σ<sup>2</sup><sub>RR</sub> and HF<sub>RR</sub> increased from DAY to NIGHT only in W_NOKID (from 3334 ± 2153 to 4816 ± 4063 ms<sup>2</sup> and from 356 ± 334 to 1397 ± 1629 ms<sup>2</sup>, respectively). W_KID showed lower σ<sup>2</sup><sub>RR</sub> and HF<sub>RR</sub> during NIGHT, compared to W_NOKID (2336 ± 3170 vs 4816 ± 4063 ms<sup>2</sup> and 556 ± 950 vs 1397 ± 1629 ms<sup>2</sup>, respectively). The perceived stress according to the visual analogue scale was similar in the two groups (4.7 ± 2.1 in W_KID, 5.7 ± 2.1 in W_NOKID). The presence of preschoolers lowered nocturnal cardiac vagal modulation in female healthcare professionals. This might represent an adaptation with a finalistic purpose, scilicet the facilitation of a prompt reaction in case of a child's need.</p>
Heart Rate Variability from Wearable Photoplethysmography Systems: Implications in Sleep Studies at High Altitude (dataset)
<p>public anonymized dataset of the main findings of the study</p> <p>Abstract:</p> <p>The interest in photoplethysmography (PPG) for sleep monitoring is increasing because PPG may allow assessing the heart rate variability (HRV), which is particularly important in breathing disorders. Thus, we aim to evaluate how PPG wearable systems measure HRV during sleep at high altitudes, where hypobaric hypoxia induces respiratory disturbances. We considered PPG and electrocardiographic recordings in 21 volunteers sleeping at 4554m asl (as a model of sleep breathing disorder), and 5 alpine guides sleeping at sea level, 6000m and 6800m asl. Power spectra, multiscale entropy, and self-similarity were calculated for PPG tachograms and electrocardiography R-R intervals (RRI). Results demonstrated that wearable PPG devices provide HRV measures even at extremely high altitudes. However, the comparison between PPG tachograms and RRI showed discrepancies in the faster spectral components and at the shorter scales of self-similarity and entropy (TABLE 1). Furthermore, the changes in sleep HRV from sea level to extremely high altitudes quantified by RRI and PPG tachograms in the 5 alpine guides tended to be different at the faster frequencies and shorter scales (TABLE 2). Discrepancies may be explained by modulations of pulse wave velocity and should be considered to interpret correctly autonomic alterations during sleep from HRV analysis.</p>
Autonomic cardiac profile in male and female healthcare professionals with and without preschoolers: differences evidenced by heart rate variability analysis
<p>De Maria B, Cassetti G, Clementi L, De Grazia V, Parati M, Perego F, Porta A, Dalla Vecchia LA. Autonomic cardiac profile in male and female healthcare professionals with and without preschoolers: differences evidenced by heart rate variability analysis. Sci Rep. 2022 Aug 25;12(1):14499. doi: 10.1038/s41598-022-18744-1. PMID: 36008506; PMCID: PMC9411539.</p> <p>Abstract</p> <p>A reduced nocturnal cardiac vagal modulation has been observed in working women with preschoolers. Whether this adaptation also occurs in men remains an open question. The aim of this study was to analyze the cardiac autonomic profile of two groups of healthcare male professionals, one with and one without preschoolers, to be compared to females. Twenty-five working men with preschoolers (M_KID, age 35.41 ± 4.01 years) and 25 without (M_NOKID, 34.48 ± 6.00 years) were compared with 25 working women with preschoolers (W_KID, 37.7 ± 5.6 years) and 25 without (W_NOKID, 35.4 ± 7.2 years). A 24-h Holter electrocardiogram was performed for time and frequency domain analysis of the beat-to-beat variations of RR interval (RR) variability, during daytime (DAY) and nighttime (NIGHT). The power of RR variability in the high frequency band (HF<sub>RR</sub>) was considered as an index of cardiac vagal modulation. RR variability indices were similar in M_KID and M_NOKID during both DAY and NIGHT. In contrast, W_KID showed a reduced nocturnal HF<sub>RR</sub> compared to W_NOKID. The comparison of working men with and without preschoolers revealed no differences in the cardiac autonomic profile, in contrast with women. This suggests that sex and/or gender may represent a crucial factor in the cardiac neural control in the parental condition.</p>
Heart Rate Variability for the early detection of cardiac autonomic dysfunction in type 1 diabetes
<p>Anonymized dataset with HRV indexes in T1DM patients and matched controls measured in supine and head-up tilt postures. Data used in the paper: "Heart Rate Variability for the Early Detection of Cardiac Autonomic Dysfunction in Type 1 Diabetes" Paolo Castiglioni, Andrea Faini, Anika Nys, Renee De Busser, Martijn Scherrenberg, Esmee Baldussu, Gianfranco Parati, Paul Dendale published on Frontiers in Physiology (2022)</p>
Correlation between diminished vagal tone and somatic dysfunction severity in very and extremely low birth weight preterm infants assessed with frequency spectrum heart rate variability and salivary cortisol
<p>Dataset</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.