Evidence map›Paper›PMID 29556773›Full record

ArticleEuropean journal of applied physiology2018

Differences in kinematics and energy cost between front crawl and backstroke below the anaerobic threshold.

Tomohiro Gonjo, Carla McCabe, Ana Sousa, João Ribeiro, Ricardo J Fernandes, João Paulo Vilas-Boas, Ross Sanders

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In one paragraph

Article in European journal of applied physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The energy cost of swimming and its determinants.European journal of applied physiology · 2020
    Review
  11. Article
  12. In-Water and On-Land Swimmers' Symmetry and Force Production.International journal of environmental research and public health · 2019
    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

7 authors.

Tomohiro GonjoFaculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan. gonjo.tomohiro.ga@u.tsukuba.ac.jp.ORCID http://orcid.org/0000-0001-9118-5167
Carla McCabeFaculty of Life and Health Sciences, Ulster University, Antrim, Northern Ireland, UK.
Ana SousaResearch Centre for Sports, Exercise and Human Development, CIDESD, Vila Real, Portugal.
João RibeiroResearch Centre for Sports, Exercise and Human Development, CIDESD, Vila Real, Portugal.
Ricardo J FernandesFaculty of Sports, CIFI2D, and LABIOMEP, University of Porto, Porto, Portugal.
João Paulo Vilas-BoasFaculty of Sports, CIFI2D, and LABIOMEP, University of Porto, Porto, Portugal.
Ross SandersExercise and Sport Science, Faculty of Health Sciences, The University of Sydney, Sydney, NSW, Australia.

Funding

YAMAHA Motor Foundation for Sports International Sport Scholarship
6 · The paper itself

Abstract

purposeThe purpose of this study was to determine kinematic and energetic differences between front crawl and backstroke performed at the same aerobic speeds.

methodsTen male competitive swimmers performed front crawl and backstroke at a pre-determined sub-anaerobic threshold speed to assess energy cost (through oxygen uptake measurement) and kinematics (using three-dimensional videography to determine stroke frequency and length, intra-cycle velocity fluctuation, three-dimensional wrist and ankle speeds, and vertical and lateral ankle range of motion). For detailed kinematic analysis, resultant displacement, the duration, and three-dimensional speed of the wrist during the entry, pull, push, and release phases were also investigated.

resultsThere were no differences in stroke frequency/length and intra-cycle velocity fluctuation between the swimming techniques, however, swimmers had lower energy cost in front crawl than in backstroke (0.77 ± 0.08 vs 0.91 ± 0.12 kJ m

conclusionFront crawl is less costly than backstroke, and limbs motion in front crawl is more effective than in backstroke.

Indexed as

Anaerobic ThresholdEnergy MetabolismAdolescentBiomechanical PhenomenaHumansMaleSwimmingBackstrokeEfficiencyEnergyFreestyleKinematicsSwimming

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.