Show simple item record

dc.contributor.authorL. Skinner, Tinaen_US
dc.contributor.authorG. Jenkins, Daviden_US
dc.contributor.authorS. Coombes, Jeffen_US
dc.contributor.authorR. Taaffe, Dennisen_US
dc.contributor.authorLeveritt, Michaelen_US
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.en_US
dc.publisherLippincott Williams & Wilkinsen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofjournalMedicine and Science in Sports and Exerciseen_US
dc.subject.fieldofresearchClinical and Sports Nutritionen_US
dc.titleDose response of caffeine on 2000-m rowing performanceen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.hasfulltextNo Full Text

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record