Evidence map›Paper›PMID 14652762›Full record

Trial reportEuropean journal of applied physiology2004

Differences in the energy cost between children and adults during front crawl swimming.

Per-Ludvik Kjendlie, Frank Ingjer, Ørjan Madsen, Robert Keig Stallman, James Stray-Gundersen

Abstract readClinical TrialControlled Clinical Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. The energy cost of swimming and its determinants.European journal of applied physiology · 2020
    Review
  4. Article
  5. Article
  6. Article
  7. Energetics of swimming: a historical perspective.European journal of applied physiology · 2011
    Review
  8. Article
  9. Article
  10. Article
  11. Combined strength and endurance training in competitive swimmers.Journal of sports science & medicine · 2009
    Article
  12. Article
  13. The critical velocity in swimming.European journal of applied physiology · 2008
    Article
  14. 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

5 authors.

Per-Ludvik KjendlieNorwegian University of Sport and Physical Education, Ullevål Stadion, 4014, 0840 Oslo, Norway. per-ludvik.kjendlie@nih.no
Frank Ingjer
Ørjan Madsen
Robert Keig Stallman
James Stray-Gundersen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is little information available about the swimming economy of children. The aim of this study was to examine any possible differences in swimming economy in children and adults, swimming front crawl submaximally. Swimming economy was compared in adults [ n=13, aged 21.4 (3.7) years] and children [n=10, aged 11.8 (0.8) years] tested at four submaximal 6-min workloads. Oxygen consumption (VO2) was measured with Douglas bags in a 25-m pool and pacer lights were used to control the velocities. Swimming economy was scaled to body size using mass (BM), body surface area (BSA) and body length (BL). Children had lower VO2 (litres per minute) at a given velocity than the adults, with 1.86 (0.28) and 2.39 (0.20) l min(-1) respectively (at 1.00 m s(-1)). When scaling for size, children had higher VO2 measured in litres per square metre per minute and millilitres per kilogram per minute (divided by BSA and BM) than adults. The VO2 divided by BL was found not to differ between the two groups. The O2 cost of swimming 1 m at a velocity of 1.00 m s(-1) was lower in the children [31.0 (4.6) ml m(-1)] than in the adults [39.9 (3.3) ml m(-1) P<0.01], probably due to a lower total drag in the children. The results also showed that for children a relationship between swimming velocity cubed and VO2 exists as shown earlier for adults. It is concluded that, when scaling for BSA and BM, children are less economical than adults, when scaling for BL, children are equally economical, and when considering energy cost per metre and absolute VO2, children are more economical than the adults.

Indexed as

AdultAge FactorsAgingChildEnergy TransferExerciseFemaleHumansMaleOxygen ConsumptionPhysical ExertionSwimmingTask Performance and Analysis

Identifiers

What OpenQuestion holds

Textmetadata
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.