The effect of astaxanthin supplementation on performance and fat oxidation during a 40 km cycling time trial

Daniel R Brown, Ashley R Warner, Sanjoy K Deb, Lewis A Gough, Andy Sparks, LARS MCNAUGHTON

Research output: Contribution to journalArticle

Abstract

Objectives This study aimed to investigate whether supplementation with 12 mg×day−1 astaxanthin for 7 days can improve exercise performance and metabolism during a 40 km cycling time trial. Design A randomised, double-blind, crossover design was employed.
Methods
Twelve recreationally trained male cyclists (VO2peak: 56.5 ± 5.5 mL×kg−1×min−1, Wmax: 346.8 ± 38.4 W)
were recruited. Prior to each experimental trial, participants were supplemented with either 12 mg×day−1
astaxanthin or an appearance-matched placebo for 7 days (separated by 14 days of washout). On day 7
of supplementation, participants completed a 40 km cycling time trial on a cycle ergometer, with indices
of exercise metabolism measured throughout.
Results
Time to complete the 40 km cycling time trial was improved by 1.2 ± 1.7% following astaxanthin supplementation, from 70.76 ± 3.93 min in the placebo condition to 69.90 ± 3.78 min in the astaxanthin
condition (mean improvement = 51 ± 71 s, p = 0.029, g = 0.21). Whole-body fat oxidation rates were
also greater (+0.09 ± 0.13 g×min−1, p = 0.044, g = 0.52), and the respiratory exchange ratio lower (-0.03
± 0.04, p = 0.024, g = 0.60) between 39-40 km in the astaxanthin condition.
Conclusion
Supplementation with 12 mg×day−1 astaxanthin for 7 days provided an ergogenic benefit to 40 km
cycling time trial performance in recreationally trained male cyclists and enhanced whole-body fat
oxidation rates in the final stages of this endurance-type performance event.
Original languageEnglish
Pages (from-to)1-17
JournalJournal of Science and Medicine in Sport
Early online date3 Jul 2020
DOIs
Publication statusE-pub ahead of print - 3 Jul 2020

Keywords

  • Antioxidants
  • Dietary Supplements
  • Substrate Utilisation
  • Sports Performance
  • Sports Nutrition

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