Evidence map›Paper›PMID 32056891›Full record

ArticleJournal of affective disorders2020

Differences in psychomotor activity and heart rate variability in patients with newly diagnosed bipolar disorder, unaffected relatives, and healthy individuals.

Josefine Freyberg, Søren Brage, Lars Vedel Kessing, Maria Faurholt-Jepsen

Open access · greenAbstract read
In one paragraph

Article in Journal of affective disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
1.8field-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

5 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
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

4 authors at 3 institutions in 2 countries.

Josefine FreybergThe Copenhagen Affective Disorder research Center (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
Søren BrageMRC Epidemiology Unit, Cambridge, United Kingdom.
Lars Vedel KessingThe Copenhagen Affective Disorder research Center (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
Maria Faurholt-JepsenThe Copenhagen Affective Disorder research Center (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark. Electronic address: maria.faurholtjepsen@regionh.dk.
Rigshospitalet · DKMRC Epidemiology Unit · GBUniversity of Copenhagen · DK

Funding

Department of Health IS-BRC-1215-20014Medical Research Council MC_UU_00006/4Medical Research Council MC_UU_12015/3
6 · The paper itself

Abstract

backgroundHeart rate variability (HRV) and psychomotor activity have been found reduced in bipolar disorder (BD) but has never been investigated in newly diagnosed BD and unaffected relatives. The present study aimed to compare HRV and psychomotor activity between newly diagnosed patients with BD, their unaffected first-degree relatives (UR), and healthy control individuals (HC).

methods20 newly diagnosed patients with BD, 20 of their UR, and 20 age- and sex-matched HC were included. Measurements of HRV for five minutes and heart rate and acceleration for seven days were conducted. Activity energy expenditure (AEE) was derived from the latter. Linear mixed effect regression models were conducted to compare the three groups.

resultsHRV did not differ in any measure between the three groups of participants. Similarly, AEE (kJ/day/kg) did not differ between the three groups in neither daily means (BD: 63.6, UR: 64.1, HC: 62.1) nor when divided into quarter-daily intervals. LIMITATIONS: The relatively small size of the study may affect the validity of the results.

conclusionPatients with newly diagnosed BD and UR do not present with decreased HRV or AEE. These results contrast prior findings from BD patients with more advanced stages of the disorder, suggesting that these outcomes progress with illness duration.

Indexed as

Bipolar DisorderCase-Control StudiesHealth StatusHeart RateHumansActivity energy expenditureBipolar disorderHeart rate variabilityPsychomotor activityUnaffected relatives

Identifiers

PMID32056891
PMCPMC7116568
OpenAlexW3000952674

What OpenQuestion holds

Textmetadata
LicenceTDM
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.