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dc.contributor.authorSkinner, Tina L.
dc.contributor.authorJenkins, David G.
dc.contributor.authorCoombes, Jeff S.
dc.contributor.authorTaaffe, Dennis R.
dc.contributor.authorLeveritt, Michael
dc.date.accessioned2017-05-03T14:11:40Z
dc.date.available2017-05-03T14:11:40Z
dc.date.issued2010
dc.date.modified2010-07-15T09:45:13Z
dc.identifier.issn01959131
dc.identifier.doi10.1249/MSS.0b013e3181b6668b
dc.identifier.urihttp://hdl.handle.net/10072/32241
dc.description.abstractPurpose: To determine whether a dose-response relationship exists between caffeine and 2000-m rowing performance. Methods: In this randomized, placebo-controlled, double-blind crossover study, 10 competitive male rowers (mean ᠓D: age = 20.6 ᠱ.4 yr, body mass = 87.7 ᠱ0.5 kg, height = 186.8 ᠶ.8 cm, V珲peak = 5.1 ᠰ.6 L筩n-1) consumed 2, 4, or 6 mg竧-1 caffeine or a placebo 60 min before completing a 2000-m time trial on a rowing ergometer. The trials were preceded by a 24-h standardized diet (including a light preexercise meal of 2 g竧-1 CHO), and subjects were tested preexercise for hydration, caffeine abstinence, and blood glucose concentrations. Results: Time trial performance was not significantly different across the three caffeine doses or placebo (P = 0.249). After the three caffeine trials, postexercise plasma glucose and lactate concentrations were higher compared with the placebo trial (P < 0.05). Plasma caffeine concentrations after 60 min of ingestion were lower than the values reported previously by others following the same dose, and there was considerable interindividual variation in plasma caffeine concentrations in response to the various caffeine doses. Conclusions: The large interindividual response to the caffeine doses suggests that individual characteristics need to be considered when administering caffeine for performance enhancement. In addition, preexercise feeding may significantly affect plasma caffeine concentrations and the potential for caffeine to improve performance.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoen_AU
dc.publisherLippincott Williams & Wilkins
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom571
dc.relation.ispartofpageto576
dc.relation.ispartofissue3
dc.relation.ispartofjournalMedicine and Science in Sports and Exercise
dc.relation.ispartofvolume42
dc.rights.retentionY
dc.subject.fieldofresearchClinical and Sports Nutrition
dc.subject.fieldofresearchHuman Movement and Sports Sciences
dc.subject.fieldofresearchMedical Physiology
dc.subject.fieldofresearchPublic Health and Health Services
dc.subject.fieldofresearchcode111101
dc.subject.fieldofresearchcode1106
dc.subject.fieldofresearchcode1116
dc.subject.fieldofresearchcode1117
dc.titleDose response of caffeine on 2000-m rowing performance
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2010
gro.hasfulltextNo Full Text
gro.griffith.authorLeveritt, Michael


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