Does an eccentric chainring improve conventional parameters of neuromuscular power?

Hue, Olivier, Racinais, Sebastien, Chamari, Karim, Damiani, Michael, Hertogh, Claude and Blonc, Stephen (2008) Does an eccentric chainring improve conventional parameters of neuromuscular power?. Journal of Science and Medicine in Sport, 11 3: 264-270. doi:10.1016/j.jsams.2007.06.004

Author Hue, Olivier
Racinais, Sebastien
Chamari, Karim
Damiani, Michael
Hertogh, Claude
Blonc, Stephen
Title Does an eccentric chainring improve conventional parameters of neuromuscular power?
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1440-2440
Publication date 2008-06
Sub-type Article (original research)
DOI 10.1016/j.jsams.2007.06.004
Volume 11
Issue 3
Start page 264
End page 270
Total pages 7
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Language eng
Subject 1106 Human Movement and Sports Science
Formatted abstract
This study compared the conventional parameters of anaerobic cycling power in physically active non-cyclists using the Pro-Race® system and a traditional chainring. The force-velocity test was chosen for this purpose because it is the shortest validated cycling laboratory test in which each parameter of maximal anaerobic power can be estimated. The power output (Wmax) and the force at which Wmax is produced (Fopt) were significantly improved with the eccentric chainring (1100 ± 227 W versus 1006 ± 197W and 1.39 ± 0.15N/kg body mass versus 1.13 ± 0.16 N/kg body mass with the eccentric and round designs, respectively; P < 0.006 and P < 0.0004, respectively). The power gained (delta power) was significantly correlated with the eccentric chainring Fopt (r = 0.649; P < 0.05), the mid-thigh circumference (r = 0.685; P < 0.05), the estimated lean thigh volume (r = 0.765; P < 0.01) and the estimated lean lower limb volume (r = 0.665; P < 0.05). We concluded that the eccentric chainring significantly improved the estimated anaerobic power output during a force-velocity test by increasing the force component, Fopt. Cautious interpretation of our results suggests that the subjects with physical attributes that contribute to developing high forces may have a significant advantage in performing with the eccentric chainring. [PUBLICATION ABSTRACT]
Keyword Eccentric chainring
Force - velocity test
Anthropometric parameters
Lean lower limb volume
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 08 Apr 2010, 10:07:36 EST by Sue Green on behalf of Faculty Of Health Sciences