Evidence map›Paper›PMID 31752871›Full record

ArticleRespiratory research2019

Diverging effects of premature birth and bronchopulmonary dysplasia on exercise capacity and physical activity - a case control study.

Katharina Ruf, Wolfgang Thomas, Maximilian Brunner, Christian P Speer, Helge Hebestreit

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 4 pooled it
1.6field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 4 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Lung volumes, gas transfer and oscillometry after preterm birth: systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
  2. Physiological responses to exercise in survivors of preterm birth: a meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
  3. Pooled it
  4. Pooled it
  5. Review
  6. [Prognosis of bronchopulmonary dysplasia].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2025
    Review
  7. Article
  8. Observational
  9. Review
  10. Early Origins of Chronic Obstructive Pulmonary Disease: Prenatal and Early Life Risk Factors.International journal of environmental research and public health · 2023
    Review
  11. Review
  12. Review
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

5 authors at 1 institution in 1 country.

Katharina RufUniversity Children's Hospital Würzburg, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Germany. ruf_k@ukw.de.ORCID http://orcid.org/0000-0001-8256-8123
Wolfgang ThomasUniversity Children's Hospital Würzburg, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.
Maximilian BrunnerUniversity Children's Hospital Würzburg, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.
Christian P SpeerUniversity Children's Hospital Würzburg, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.
Helge HebestreitUniversity Children's Hospital Würzburg, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Germany.
University of Würzburg · DE

Funding

Kiwi e.V. n/a
6 · The paper itself

Abstract

backgroundExtreme prematurity has been associated with exercise intolerance and reduced physical activity. We hypothesized that children with bronchopulmonary dysplasia (BPD) would be especially affected based on long-term lung function impairments. Therefore, the objective of this study was to compare exercise capacity and habitual physical activity between children born very and extremely preterm with and without BPD and term-born children.

methodsTwenty-two school-aged children (aged 8 to 12 years) born with a gestational age < 32 weeks and a birthweight < 1500 g (9 with moderate or severe BPD (=BPD), 13 without BPD (=No-BPD)) and 15 healthy term-born children (=CONTROL) were included in the study. Physical activity was measured by accelerometry, lung function by spirometry and exercise capacity by an incremental cardiopulmonary exercise test.

resultsPeak oxygen uptake was reduced in the BPD-group (83 ± 11%predicted) compared to the No-BPD group (91 ± 8%predicted) and the CONTROL group (94 ± 9%predicted). In a general linear model, variance of peak oxygen uptake was significantly explained by BPD status and height but not by prematurity (p < 0.001). Compared to CONTROL, all children born preterm spent significantly more time in sedentary behaviour (BPD 478 ± 50 min, No-BPD 450 ± 52 min, CONTROL 398 ± 56 min, p < 0.05) and less time in moderate-to-vigorous-physical activity (BPD 13 ± 8 min, No-BPD 16 ± 8 min, CONTROL 33 ± 16 min, p < 0.001). Prematurity but not BPD contributed significantly to explained variance in a general linear model of sedentary behaviour and likewise moderate-to-vigorous-physical activity (p < 0.05 and p < 0.001 respectively).

conclusionIn our cohort, BPD but not prematurity was associated with a reduced exercise capacity at school-age. However, prematurity regardless of BPD was related to less engagement in physical activity and more time spent in sedentary behaviour. Thus, our findings suggest diverging effects of prematurity and BPD on exercise capacity and physical activity.

Indexed as

Sedentary BehaviorBronchopulmonary DysplasiaCase-Control StudiesChildCohort StudiesExerciseExercise ToleranceFemaleForced Expiratory VolumeHumansMalePremature BirthBronchopulmonary dysplasiaExercise capacityExercise testingPhysical activityPreterm birthSedentary behaviour

Identifiers

PMID31752871
PMCPMC6873747
OpenAlexW2990223467

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.