Evidence map›Paper›PMID 19229554›Full record

ReviewEuropean journal of applied physiology2009

Efficiency in cycling: a review.

Gertjan Ettema, Håvard Wuttudal Lorås

Abstract readReview
PubMed Publisher
In one paragraph

Review in European journal of applied physiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 3 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

72 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. The Effect of Different Cadence on Paddling Gross Efficiency and Economy in Stand-Up Paddle Boarding.International journal of environmental research and public health · 2020
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  9. Article
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  13. On the estimation of total muscle work done in human walking.The Journal of experimental biology · 2025
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  16. Review
  17. Leg cycling efficiency is unaltered in healthy aging regardless of sex or training status.Journal of applied physiology (Bethesda, Md. : 1985) · 2024
    Article
  18. Article
  19. Running Economy in the Vertical Kilometer.Sensors (Basel, Switzerland) · 2023
    Article
  20. Article

12 more citing papers are in PubMed but not listed here.

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

2 authors.

Gertjan EttemaHuman Movement Science Programme, Faculty of Social Sciences and Technology Management, Norwegian University of Science and Technology, Trondheim, Norway. gertjan.ettema@svt.ntnu.no
Håvard Wuttudal Lorås

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We focus on the effect of cadence and work rate on energy expenditure and efficiency in cycling, and present arguments to support the contention that gross efficiency can be considered to be the most relevant expression of efficiency. A linear relationship between work rate and energy expenditure appears to be a rather consistent outcome among the various studies considered in this review, irrespective of subject performance level. This relationship is an example of the Fenn effect, described more than 80 years ago for muscle contraction. About 91% of all variance in energy expenditure can be explained by work rate, with only about 10% being explained by cadence. Gross efficiency is strongly dependent on work rate, mainly because of the diminishing effect of the (zero work-rate) base-line energy expenditure with increasing work rate. The finding that elite athletes have a higher gross efficiency than lower-level performers may largely be explained by this phenomenon. However, no firm conclusions can be drawn about the energetically optimal cadence for cycling because of the multiple factors associated with cadence that affect energy expenditure.

Indexed as

EfficiencyActivity CyclesAthletic PerformanceBasal MetabolismEnergy MetabolismHumansModels, BiologicalTask Performance and AnalysisThermodynamics

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.