Trial reportEuropean journal of applied physiology2009
The rotor pedaling system improves anaerobic but not aerobic cycling performance in professional cyclists.
Trial report 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 7 papers.
What it found
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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.
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.
Who cites it
7 citing papers in PubMed.
- Do Non-Circular Chainrings Enhance Cycling Performance? A Systematic Review of Randomized Crossover Trials.Journal of functional morphology and kinesiology · 2025Review
- 'Aerobic' and 'Anaerobic' terms used in exercise physiology: a critical terminology reflection.Sports medicine - open · 2015Article
- Physiological Responses during Cycling With Oval Chainrings (Q-Ring) and Circular Chainrings.Journal of sports science & medicine · 2014Article
- Does a non-circular chainring improve performance in the bicycle motocross cycling start sprint?Journal of sports science & medicine · 2014Article
- Anaerobic capacity of amateur mountain bikers during the first half of the competition season.Biology of sport · 2013Article
- The measurement of maximal (anaerobic) power output on a cycle ergometer: a critical review.BioMed research international · 2013Review
- Effect of the rotor crank system on cycling performance.Journal of sports science & medicine · 2009Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aims of this study were to evaluate the effects of both noncircular (ROT) and conventional (CON) chainring systems on aerobic and anaerobic cycling performances of professional cyclists, while analyzing the influence of varying the crank angle of maximum crank arm length of ROT. Fifteen professional road cyclists performed both incremental and sub-maximal aerobic tests and the Wingate anaerobic test in the laboratory. There were no statistical differences between CON and ROT in the aerobic tests, even when the best ROT position (ROT+) was selected. However, in the anaerobic test, maximal (4.2-9.1%) and mean (0.7-4.7%) power outputs were higher in ROT (P < 0.05). These differences were greater when the ROT+ was selected (11.2 and 7.0%, respectively). Our findings suggest that ROT is able to improve anaerobic but not aerobic cycling performance in professional cyclists. Nevertheless, it must be adapted to each cyclist to ensure these improvements.
Indexed as
Identifiers
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Registered trials
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.