The effect of astaxanthin supplementation on performance and fat oxidation during a 40 km cycling time trial
Brown, Daniel R. and Warner, Ashley R. and Deb, Sanjoy K. and Gough, Lewis A. and Sparks, S. Andy and McNaughton, Lars R. (2020) The effect of astaxanthin supplementation on performance and fat oxidation during a 40 km cycling time trial. Journal of Science and Medicine in Sport. ISSN 1440-2440
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Brown et al. 2020 - asta and cycling 40km TT.pdf - Accepted Version Download (1MB) |
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.
Conclusions
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.
| Item Type: | Article | ||||||
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| Additional Information: | ** Article version: AM ** Embargo end date: 31-12-9999 ** From Elsevier via Jisc Publications Router ** History: accepted 28-06-2020; issue date 03-07-2020. ** Licence for AM version of this article: This article is under embargo with an end date yet to be finalised. | ||||||
| Identification Number: | https://doi.org/10.1016/j.jsams.2020.06.017 | ||||||
| Dates: |
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| Uncontrolled Keywords: | antioxidants, dietary supplements, substrate utilisation, sports performance, sports, nurtition | ||||||
| Subjects: | CAH02 - subjects allied to medicine > CAH02-06 - allied health > CAH02-06-02 - nutrition and dietetics CAH03 - biological and sport sciences > CAH03-02 - sport and exercise sciences > CAH03-02-01 - sport and exercise sciences |
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| Divisions: | Faculty of Health, Education and Life Sciences > School of Health Sciences | ||||||
| SWORD Depositor: | JISC PubRouter | ||||||
| Depositing User: | JISC PubRouter | ||||||
| Date Deposited: | 06 Jul 2020 15:00 | ||||||
| Last Modified: | 08 Mar 2022 16:19 | ||||||
| URI: | https://www.open-access.bcu.ac.uk/id/eprint/9428 |
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