File(s) under permanent embargo

Improved 2000-meter rowing performance in competitive oarswomen after caffeine ingestion

journal contribution
posted on 01.01.2000, 00:00 authored by M Anderson, Clinton BruceClinton Bruce, Steve FraserSteve Fraser, N Stepto, R Klein, W Hopkins, J Hawley
Eight competitive oarswomen (age, 22 ± 3 years; mass, 64.4 ± 3.8 kg) performed three simulated 2,000-m time trials on a rowing ergometer. The trials, which were preceded by a 24-hour dietary and training control and 72 hours of caffeine abstinence, were conducted 1 hour after ingesting caffeine (6 or 9 mg · kg-1 body mass) or placebo. Plasma free fatty acid concentrations before exercise were higher with caffeine than placebo (0.67 ± 0.34 vs. 0.72 ± 0.36 vs. 0.30 ± 0.10 mM for 6 and 9 mg · kg-1caffeine and placebo, respectively; p < .05). Performance time improved 0.7% (95% confidence interval [CI] 0 to 1.5%) with 6 mg · kg-1 caffeine and 1.3% (95% CI 0.5 to 2.0%) with 9 mg · kg-1 caffeine. The first 500 m of the 2,000 m was faster with the higher caffeine dose compared with placebo or the lower dose (1.53 ± 0.52 vs. 1.55 ± 0.62 and 1.56 ± 0.43 min; p = .02). We concluded that caffeine produces a worthwhile enhancement of performance in a controlled laboratory setting, primarily by improving the first 500 m of a 2,000-m row.

History

Journal

International journal of sport nutrition and exercise metabolism

Volume

10

Issue

4

Pagination

464 - 475

Publisher

Human Kinetics, Inc.

Location

Champaign, IL

ISSN

1526-484X

eISSN

1543-2742

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal