Effect of Astaxanthin Supplementation on Cardiorespiratory Function in Runners

In the study “Effect of Astaxanthin Supplementation on Cardiorespiratory Function in Runners,” authors Shawn Talbott1, Don Hantla, Bob Capelli, Lixin Ding, Yanmei Li, and Christian Artaria find supplementation with 12 mg/day of NAX for 8 weeks reduced average heart rate at submaximal endurance intensities (AeT and AT), but not at higher “peak” intensities. These results suggest that NAX may be a beneficial ergogenic aid for long/ultradistance endurance athletes, but not necessarily for athletes competing in shorter higher intensity efforts. In addition, these data are also suggestive of a general “cardiotonic” effect of NAX, that should be investigated in non-athletic populations including elderly subjects and those with cardiac complications including post-myocardial infarction, heart failure, statin usage, mitochondrial dysfunction, chronic fatigue, and related conditions.

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