Evidence map›Paper›PMID 8223520›Full record

ArticleEuropean journal of applied physiology and occupational physiology1993

Energy cost and efficiency of riding aerodynamic bicycles.

C Capelli, G Rosa, F Butti, G Ferretti, A Veicsteinas, P E di Prampero

Abstract read
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In one paragraph

Article in European journal of applied physiology and occupational physiology, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

13 citing papers in PubMed, 84 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. The energetics of cycling on Earth, Moon and Mars.European journal of applied physiology · 2011
    Review
  7. An analysis of performance in human locomotion.European journal of applied physiology · 2011
    Review
  8. Influence of exercise on nutritional requirements.European journal of applied physiology · 2011
    Review
  9. Review
  10. Review
  11. Article
  12. Modelling human locomotion: applications to cycling.Sports medicine (Auckland, N.Z.) · 2001
    Review
  13. Effects of altitude on top speeds during 1 h unaccompanied cycling.European journal of applied physiology and occupational physiology · 1995
    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

6 authors at 3 institutions in 2 countries.

C CapelliDipartimento di Scienze e Tecnologie Biomediche, Sezione di Fisiologia, Udine, Italy.
G Rosa
F Butti
G Ferretti
A Veicsteinas
P E di Prampero
University of Brescia · ITUniversity of Udine · ITUniversity of Geneva · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Traction resistance (Rt) was determined by towing two cyclists in fully dropped posture on bicycles with an aerodynamic frame with lenticular wheels (AL), an aerodynamic frame with traditional wheels (AT), or a traditional frame with lenticular wheels (TL) in calm air on a flat wooden track at constant speed (8.6-14.6 m.s-1). Under all experimental conditions, Rt increased linearly with the square of air velocity (v2a); r2 equal to greater than 0.89. The constant k = delta Rt/delta v2a was about 15% lower for AL and AT (0.157 and 0.155 N.s2 x m-2) than for TL bicycles (0.184 N.s2 x m-2). These data show firstly, that in terms of mechanical energy savings, the role of lenticular wheels is negligible and, secondly, that for TL bicycles, the value of k was essentially equal to that found by others for bicycles with a traditional frame and traditional wheels (TT). The energy cost of cycling per unit distance (Cc, J.m-1) was also measured for AT and TT bicycles from the ratio of the O2 consumption above resting to speed, in the speed range from 4.7 to 11.1 m.s-1. The Cc also increased linearly with v2a, as described by: Cc = 30.8 + 0.558 v2a and Cc = 29.6 + 0.606 v2a for AT and TT bicycles. Thus from our study it would seem that AT bicycles are only about 5% more economical than TT at 12.5 m.s-1 the economy tending to increase slightly with the speed.(ABSTRACT TRUNCATED AT 250 WORDS)

Indexed as

BicyclingAerobiosisBiomechanical PhenomenaBody HeightBody WeightEnergy MetabolismHumansOxygen Consumption

Identifiers

PMID8223520
OpenAlexW1963963441

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.