Evidence map›Paper›PMID 21625487›Full record

ArticlePloS one2011

Unexpected course of nonlinear cardiac interbeat interval dynamics during childhood and adolescence.

Dirk Cysarz, Maijana Linhard, Friedrich Edelhäuser, Alfred Längler, Peter Van Leeuwen, Günter Henze, Georg Seifert

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.6field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Heart Rate Asymmetry in Healthy Children.Journal of clinical medicine · 2023
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  7. Test-Retest Reliability of Handgrip Strength Measurement in Children and Preadolescents.International journal of environmental research and public health · 2020
    Article
  8. Sex- and Age-Dependent Differences in Autonomic Nervous System Functioning in Adolescents.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Dirk CysarzIntegrated Curriculum for Anthroposophic Medicine, University of Witten/Herdecke, Witten, Germany. d.cysarz@rhythmen.de
Maijana Linhard
Friedrich Edelhäuser
Alfred Längler
Peter Van Leeuwen
Günter Henze
Georg Seifert
Charité - Universitätsmedizin Berlin · DEWitten/Herdecke University · DEGemeinschaftskrankenhaus Herdecke · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The fluctuations of the cardiac interbeat series contain rich information because they reflect variations of other functions on different time scales (e.g., respiration or blood pressure control). Nonlinear measures such as complexity and fractal scaling properties derived from 24 h heart rate dynamics of healthy subjects vary from childhood to old age. In this study, the age-related variations during childhood and adolescence were addressed. In particular, the cardiac interbeat interval series was quantified with respect to complexity and fractal scaling properties. The R-R interval series of 409 healthy children and adolescents (age range: 1 to 22 years, 220 females) was analyzed with respect to complexity (Approximate Entropy, ApEn) and fractal scaling properties on three time scales: long-term (slope β of the power spectrum, log power vs. log frequency, in the frequency range 10(-4) to 10(-2) Hz) intermediate-term (DFA, detrended fluctuation analysis, α(2)) and short-term (DFA α(1)). Unexpectedly, during age 7 to 13 years β and ApEn were higher compared to the age <7 years and age >13 years (β: -1.06 vs. -1.21; ApEn: 0.88 vs. 0.74). Hence, the heart rate dynamics were closer to a 1/f power law and most complex between 7 and 13 years. However, DFA α(1) and α(2) increased with progressing age similar to measures reflecting linear properties. In conclusion, the course of long-term fractal scaling properties and complexity of heart rate dynamics during childhood and adolescence indicates that these measures reflect complex changes possibly linked to hormonal changes during pre-puberty and puberty.

Indexed as

AdolescentAgingChildChild, PreschoolCross-Sectional StudiesElectrocardiographyFemaleHeart RateHumansInfantMaleNonlinear DynamicsSex FactorsYoung Adult

Identifiers

PMID21625487
PMCPMC3098842
OpenAlexW2038169491

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.