Evidence map›Paper›PMID 15243747›Full record

Trial reportEuropean journal of applied physiology2004

Factors affecting swimming economy in children and adults.

Per-Ludvik Kjendlie, Frank Ingjer, 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 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 23% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Effect of low- and high-carbohydrate diets on swimming economy: a crossover study.Journal of the International Society of Sports Nutrition · 2020
    Trial
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Turn Performance Variation in European Elite Short-Course Swimmers.International journal of environmental research and public health · 2022
    Article
  12. Article
  13. The energy cost of swimming and its determinants.European journal of applied physiology · 2020
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Can 8-weeks of Training Affect Active Drag in Young Swimmers?Journal of sports science & medicine · 2010
    Article
  19. Article
  20. 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 1 institution in 1 country.

Per-Ludvik KjendlieNorwegian University of Sport and Physical Education, Ullevål Stadion, PO BOX 4014, 0840 Oslo, Norway. per-ludvik.kjendlie@nih.no
Frank Ingjer
Robert Keig Stallman
James Stray-Gundersen
Norwegian School of Sport Sciences · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to examine the influence of several explanatory factors: anthropometry, buoyancy, passive underwater torque, drag and swimming technique on the energy cost of swimming front crawl in children and adults. Submaximal V(.)O(2) was measured in ten children (age 12) and 13 adults (age 21), as well as body length (BL), body mass, arm length, propelling size, active drag, hydrostatic lift, passive torque, intracyclic velocity fluctuation, hand slip, stroke length and body angle. The results show that body length ( r=0.74), body mass ( r=0.86) propelling size ( r=0.61), arm length ( r=0.66), distance between the center of mass and the center of volume (Delta d, r=0.74) and body angle during swimming ( r=-0.56) all showed significant linear relationships with the cost of swimming at 1.0 m x s(-1) (CS(1.0)). When normalizing the cost of swimming to body size (CS(1.0) x BL(-1)) there were no differences between the two groups. The conclusions of this study are that the combination of BL, body mass, active drag factor, passive torque, drag efficiency and hydrostatic lift were able to explain 97% of the variation in the cost of swimming for the whole group of swimmers. The size-independent factors of torque and floating abilities (density and Delta d in % of BL), together with swimming technique and active drag were found to explain 75% of the variations in CS(1.0) x BL(-1). The identical values for CS(1.0) x BL(-1) for children and adults are explained through the opposing effects of a better swimming technique in the adults, and a better passive torque in the children.

Indexed as

Models, BiologicalAdolescentAdultAge FactorsAgingAnthropometryBody ConstitutionChildEnergy TransferFemaleHumansMaleOxygen ConsumptionSwimmingTask Performance and Analysis

Identifiers

PMID15243747
OpenAlexW1986564305

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.