Show simple item record

dc.contributor.authorRylands, Lee
dc.contributor.authorRoberts, Simon J.
dc.contributor.authorHurst, Howard Thomas
dc.date.accessioned2017-02-20T11:03:16Z
dc.date.available2017-02-20T11:03:16Z
dc.date.issued2016-08-02
dc.identifier.citationRylands, L. et al. (2017) 'Effect of gear ratio on peak power and time to peak power in BMX cyclists.' European Journal of Sport Science, 17 (2), pp. 127-131.en
dc.identifier.issn15367290
dc.identifier.pmid27485288
dc.identifier.doi10.1080/17461391.2016.1210237
dc.identifier.urihttp://hdl.handle.net/10545/621428
dc.description.abstractThe 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.
dc.description.sponsorshipN/Aen
dc.language.isoenen
dc.publisherTaylor and Francisen
dc.relation.urlhttp://www.tandfonline.com/doi/full/10.1080/17461391.2016.1210237en
dc.rightsArchived with thanks to European journal of sport scienceen
dc.subjectCyclingen
dc.subjectGear ratioen
dc.subjectPoweren
dc.subjectBicycle motocrossen
dc.subjectTorqueen
dc.subject.meshAdult
dc.subject.meshAthletic Performance
dc.subject.meshBicycling
dc.subject.meshBiomechanical Phenomena
dc.subject.meshHumans
dc.subject.meshMale
dc.subject.meshTime Factors
dc.subject.meshTorque
dc.subject.meshYoung Adult
dc.titleEffect of gear ratio on peak power and time to peak power in BMX cyclists.en
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.contributor.departmentLiverpool John Moores Universityen
dc.contributor.departmentUniversity of Central Lancashireen
dc.identifier.journalEuropean Journal of Sport Scienceen
refterms.dateFOA2018-02-02T00:00:00Z
html.description.abstractThe 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.


Files in this item

Thumbnail
Name:
Effect of gear ration on BMX ...
Size:
700.3Kb
Format:
PDF
Description:
Accepted manuscript

This item appears in the following Collection(s)

Show simple item record