TY - JOUR
T1 - The effect of astaxanthin supplementation on performance and fat oxidation during a 40 km cycling time trial
AU - Brown, Daniel R
AU - Warner, Ashley R
AU - Deb, Sanjoy K
AU - Gough, Lewis A
AU - Sparks, Andy
AU - MCNAUGHTON, LARS
N1 - Funding Information:
DB has received external research funding from AstaReal® (Sweden) to complete the current project as part of his doctoral thesis. AS and LM have a professional relationship with AstaReal®. AW, SD and LG have no professional relationship with AstaReal®.
Publisher Copyright:
© 2020 Sports Medicine Australia
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - 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.
AB - 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.
KW - Antioxidants
KW - Dietary Supplements
KW - Substrate Utilisation
KW - Sports Performance
KW - Sports Nutrition
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U2 - 10.1016/j.jsams.2020.06.017
DO - 10.1016/j.jsams.2020.06.017
M3 - Article (journal)
SN - 1440-2440
VL - 24
SP - 92
EP - 97
JO - Journal of Science and Medicine in Sport
JF - Journal of Science and Medicine in Sport
IS - 1
ER -