Effect of gear ratio on peak power and time to peak power in BMX cyclists.

Journal article


Rylands, Lee, Roberts, Simon J. and Hurst, Howard Thomas 2016. Effect of gear ratio on peak power and time to peak power in BMX cyclists. European Journal of Sport Science. https://doi.org/10.1080/17461391.2016.1210237
AuthorsRylands, Lee, Roberts, Simon J. and Hurst, Howard Thomas
Abstract

The aim of this study was to ascertain if gear ratio selection would have an effect on peak power and time to peak power production in elite Bicycle Motocross (BMX) cyclists. Eight male elite BMX riders volunteered for the study. Each rider performed three, 10-s maximal sprints on an Olympic standard indoor BMX track. The riders' bicycles were fitted with a portable SRM power meter. Each rider performed the three sprints using gear ratios of 41/16, 43/16 and 45/16 tooth. The results from the 41/16 and 45/16 gear ratios were compared to the current standard 43/16 gear ratio. Statistically, significant differences were found between the gear ratios for peak power (F(2,14) = 6.448; p = .010) and peak torque (F(2,14) = 4.777; p = .026), but no significant difference was found for time to peak power (F(2,14) = 0.200; p = .821). When comparing gear ratios, the results showed a 45/16 gear ratio elicited the highest peak power,1658 ± 221 W, compared to 1436 ± 129 W and 1380 ± 56 W, for the 43/16 and 41/16 ratios, respectively. The time to peak power showed a 41/16 tooth gear ratio attained peak power in -0.01 s and a 45/16 in 0.22 s compared to the 43/16. The findings of this study suggest that gear ratio choice has a significant effect on peak power production, though time to peak power output is not significantly affected. Therefore, selecting a higher gear ratio results in riders attaining higher power outputs without reducing their start time.

KeywordsCycling; Gear ratio; Power; Bicycle motocross; Torque; Adult; Athletic Performance; Bicycling; Biomechanical Phenomena; Humans; Male; Time Factors; Young Adult
Year2016
JournalEuropean Journal of Sport Science
PublisherTaylor & Francis
ISSN15367290
Digital Object Identifier (DOI)https://doi.org/10.1080/17461391.2016.1210237
Web address (URL)http://hdl.handle.net/10545/621428
hdl:10545/621428
Publication dates02 Aug 2016
Publication process dates
Deposited20 Feb 2017, 11:03
Rights

Archived with thanks to European journal of sport science

ContributorsUniversity of Derby, Liverpool John Moores University and University of Central Lancashire
File
File
File Access Level
Open
Permalink -

https://repository.derby.ac.uk/item/94113/effect-of-gear-ratio-on-peak-power-and-time-to-peak-power-in-bmx-cyclists

Download files

  • 30
    total views
  • 13
    total downloads
  • 0
    views this month
  • 1
    downloads this month

Export as

Related outputs

Profiling of translational and rotational head accelerations in youth BMX with and without neck brace.
Hurst, Howard Thomas, Rylands, Lee, Atkins, Stephen, Enright, Kevin and Roberts, Simon J. 2017. Profiling of translational and rotational head accelerations in youth BMX with and without neck brace. Journal of Science and Medicine in Sport. https://doi.org/10.1016/j.jsams.2017.05.018
Influence of wheel size on muscle activity and tri-axial accelerations during cross-country mountain biking
Hurst, Howard Thomas, Sinclair, Jonathan, Atkins, Stephen, Rylands, Lee and Metcalfe, John 2016. Influence of wheel size on muscle activity and tri-axial accelerations during cross-country mountain biking. Journal of Sports Sciences. https://doi.org/10.1080/02640414.2016.1215497
The effect of mountain bike wheel size on cross-country performance.
Hurst, Howard Thomas, Sinclair, Jonathan, Atkins, Stephen, Rylands, Lee and Metcalfe, John 2016. The effect of mountain bike wheel size on cross-country performance. Journal of Sports Sciences. https://doi.org/10.1080/02640414.2016.1215498
Variability in laboratory vs. field testing of peak power, torque, and time of peak power production among elite bicycle motocross cyclists
Rylands, Lee, Roberts, Simon J. and Hurst, Howard Thomas 2015. Variability in laboratory vs. field testing of peak power, torque, and time of peak power production among elite bicycle motocross cyclists. Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0000000000000884
Relationship between starting and finishing position in World Cup BMX racing
Rylands, Lee and Roberts, Simon J. 2014. Relationship between starting and finishing position in World Cup BMX racing. International Journal of Performance Analysis in Sport.
Effect of cadence selection on peak power and time of power production in elite BMX riders: A laboratory based study.
Rylands, Lee, Roberts, Simon J., Hurst, Howard Thomas and Bentley, Ian 2016. Effect of cadence selection on peak power and time of power production in elite BMX riders: A laboratory based study. Journal of Sports Sciences. https://doi.org/10.1080/02640414.2016.1215491
The effect of "pumping" and "nonpumping" techniques on velocity production and muscle activity during field-based BMX cycling
Rylands, Lee, Hurst, Howard Thomas, Roberts, Simon J. and Graydon, Robert W. 2017. The effect of "pumping" and "nonpumping" techniques on velocity production and muscle activity during field-based BMX cycling. Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0000000000001499
Velocity production in elite BMX riders: a field based study using a SRM power meter
Rylands, Lee, Roberts, Simon J., Cheetham, M. and Baker, Adam 2013. Velocity production in elite BMX riders: a field based study using a SRM power meter. Journal of Exercise Physiologyonline.