L-karnityna jest prawdopodobnie jednym z najpowszechniej stosowanych dodatków do suplementów diety z grupy „spalaczy tłuszczu”. Czy jednak jej renoma ma rzeczywiste poparcie i czy warto ją stosować?
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Źródła:
Barnett C, Costill D, Vukovich M i in. Effect of L-carnitine supplementation on muscle and blood carnitine content and lactate accumulation during high-intensity sprint cycling. Int J Sport Nutr. 1994; 44, 280-288.
Wächter S, Vogt M, Kreis R i in. Long-term administration of L-carnitine to humans: effect on skeletal muscle carnitine content and physical performance. Clin Chim Acta 2002; 318, 51-61
Vukovich MD, Costill DL, Fink WJ. Carnitine supplementation: effect on muscle carnitine and glycogen content during exercise. Med Sci Sports Exerc. 1994 Sep;26(9):1122-9.
Villani RG, Gannon J, Self M, Rich PA. L-Carnitine supplementation combined with aerobic training does not promote weight loss in moderately obese women. Int J Sport Nutr Exerc Metab. 2000;10(2):199-20
Stephens FB, Constantin-Teodosiu D, Laithwaite D, Simpson EJ, Greenhaff PL. Insulin stimulates L-carnitine accumulation in human skeletal muscle. FASEB J. 2006 Feb;20(2):377-9. Epub 2005 Dec 20.
Wall BT, Stephens FB, Constantin-Teodosiu D i in. Chronic oral ingestion of L-carnitine and carbohydrate increases muscle carnitine content and alters muscle fuel metabolism during exercise in humans. J Physiol. 2011; 15;589(Pt 4):963-73
Stephens FB, Wall BT, Marimuthu i in. Skeletal muscle carnitine loading increases energy expenditure, modulates fuel metabolism gene networks and prevents body fat accumulation in humans. J Physiol. 2013 Sep 15;591(18):4655-66
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Radosław Smolik
1 окт 2024