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dc.contributor.authorGlaister, Mark
dc.contributor.authorTowey, Colin
dc.contributor.authorJeffries, Owen
dc.contributor.authorMuniz, Daniel
dc.contributor.authorFoley, Paul
dc.contributor.authorMcInnes, Gillian
dc.date.accessioned2018-10-23T01:42:54Z
dc.date.available2018-10-23T01:42:54Z
dc.date.issued2018-09-11
dc.identifier.citationGlaister , M , Towey , C , Jeffries , O , Muniz , D , Foley , P & McInnes , G 2018 , ' Caffeine and Sprint Cycling Performance: Effects of Torque Factor and Sprint Duration. ' , International Journal of Sports Physiology and Performance (IJSPP) . https://doi.org/10.1123/ijspp.2018-0458
dc.identifier.issn1555-0265
dc.identifier.otherORCID: /0000-0002-6748-9870/work/62749814
dc.identifier.urihttp://hdl.handle.net/2299/20741
dc.descriptionThis article has been accepted for publication in the International Journal of Sports Physiology and Performance. The final publication is available at https://doi.org/10.1123/ijspp.2018-0458 © Human Kinetics 2018
dc.description.abstractPURPOSE: The aim of this study was to investigate the influence of torque factor and sprint duration on the effects of caffeine on sprint cycling performance. METHODS: Using a counterbalanced, randomized, double-blind, placebo-controlled design, 13 men completed nine trials. In Trial 1, participants completed a series of 6 s sprints at increasing torque factors, to determine the torque factor, for each individual, which elicited the highest (TOPTIMAL) peak power output (PPO). The remaining trials involved all combinations of torque factor (0.8 N∙m∙kg-1 versus TOPTIMAL), sprint duration (10 s versus 30 s), and supplementation (caffeine [5 mg∙kg-1] versus placebo). RESULTS: There was a significant effect of torque factor on PPO, with higher values at TOPTIMAL (mean difference: 168 W; 95% likely range: 142 - 195 W). There was also a significant effect of sprint duration on PPO, with higher values in 10 s sprints (mean difference: 52 W; 95% likely range: 18 - 86 W). However, there was no effect of supplementation on PPO (p = 0.056). Nevertheless, there was a significant torque factor × sprint duration × supplement interaction (p = 0.036), with post hoc tests revealing that caffeine produced a higher PPO (mean difference: 76 W; 95% likely range: 19 - 133 W) when the sprint duration was 10 s and the torque factor was TOPTIMAL. CONCLUSIONS: The results of this study show that when torque factor and sprint duration are optimized, to allow participants to express their highest PPO, there is a clear effect of caffeine on sprinting performance.en
dc.format.extent19
dc.format.extent240483
dc.language.isoeng
dc.relation.ispartofInternational Journal of Sports Physiology and Performance (IJSPP)
dc.titleCaffeine and Sprint Cycling Performance: Effects of Torque Factor and Sprint Duration.en
dc.contributor.institutionCentre for Research in Psychology and Sport Sciences
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionHigh Performance Sport Research Group
dc.contributor.institutionDepartment of Psychology, Sport and Geography
dc.contributor.institutionExercise, Health and Wellbeing Research Group
dc.description.statusPeer reviewed
dc.identifier.urlhttps://journals.humankinetics.com/doi/pdf/10.1123/ijspp.2018-0458
rioxxterms.versionofrecord10.1123/ijspp.2018-0458
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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