Studies related to Respiratory Exchange Ratio and Astaxanthin

Astaxanthin Supplementation Does Not Augment Fat Use Or Improve Endurance Performance

Effect None
Values At rest. Mean and SEM. Placebo: before 0.86 (0.01), after 0.87 (0.01). Astaxanthin: before 0.85 (0.01), after 0.88 (0.01). During submaximal exercise Placebo: before 0.84 (0.01), after 0.85 (0.01). Astaxanthin: before 0.85 (0.01), after 0.86 (0.01).
Trial Design Randomized trial
Trial Length 2-4 Weeks
Number of Subjects 32
Sex Male
Body Types Trained
Notes for this study:
In a randomized, double-blind, placebo-controlled trial, 32 trained cyclists or triathletes were allocated to take 20 mg of astaxanthin daily or placebo for 4 weeks.
There was no statistically significant difference between groups in the change in VO2, VCO2, RER, HR, or RPE at rest or during submaximal exercise. There were also no statistically significant differences in glucose, insulin, lactate, or free fatty acids during exercise. There were no differences in endurance exercise time trial performance.