Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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27.06.2014 |
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Lutein speeds up transformation from lazybones into athlete
Lutein
The human eye, the retina in particular, contains large amounts of lutein. Together with zeaxanthin, which is found mainly in the macula, lutein protects the eye against aggressive components in sunlight. Good food sources of lutein are kale and spinach.
Feed manufacturers sometimes add lutein to chicken feed so that the yolks develop a stronger colour. The body absorbs the lutein (and zeaxanthin) in egg yolks well. If you eat an egg a day the amount of these two carotenoids in your blood will rise, without there being negative effects on your cholesterol level, say researchers sponsored by egg producers. [J Nutr. 2006 Oct;136(10):2519-24.]
Government-funded research shows, however, that in some groups at least an increased egg consumption boosts the concentration of 'bad cholesterol' LDL – and with it the risk of cardiovascular disease. [Am J Clin Nutr. 1999 Aug;70(2):247-51.]
Study
Results
![]() In the animals' muscle cells the combination of lutein, milk and exercise resulted in increased activity of the enzyme carnitine palmitoyltransferase 1 [CPT1]. This enzyme helps mitochondria to burn fats.
The combination also resulted in a rise in the total amount of AMPK [tAMPK] in the muscle cells as well as a noticeable rise in the amount of phosphorylated AMPK [pAMPK]. AMPK is an enzyme that becomes active when muscle cells have little energy available, and that stimulates muscle cells to develop. Substances that activate AMPK are often interesting for endurance athletes.
Matsumoto was able to show that when lutein was administered with milk it resulted in 2-3 times greater uptake than administering lutein without milk. She was also able to show that physical exercise reduced the amount of lutein in the blood. It seems that active muscles use lutein. Lutein helps muscles to perform better – which is why the rats spontaneously ran further when they were given lutein and milk.
Effective human dosage
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