Effect of astaxanthin on cycling time trial performance

Conrad P Earnest, M Lupo, K M White, T S Church

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

We examined the effect of Astaxanthin (AST) on substrate metabolism and cycling time trial (TT) performance by randomly assigning 21 competitive cyclists to 28d of encapsulated AST (4 mg/d) or placebo (PLA) supplementation. Testing included a VO2max test and on a separate day a 2 h constant intensity pre-exhaustion ride, after a 10 h fast, at 5% below VO2max stimulated onset of 4 mmol/L lactic acid followed 5 min later by a 20 km TT. Analysis included ANOVA and post-hoc testing. Data are Mean (SD) and (95% CI) when expressed as change (pre vs. post). Fourteen participants successfully completed the trial. Overall, we observed significant improvements in 20 km TT performance in the AST group (n=7; -121 s; 95%CI, -185, -53), but not the PLA (n=7; -19 s; 95%CI, -84, 45). The AST group was significantly different vs. PLA (P
Original languageEnglish
Pages (from-to)882-888
Number of pages7
JournalInternational Journal of Sports Medicine
Volume32
Issue number11
DOIs
Publication statusPublished - 2011

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