PMID: 16521850Mar 9, 2006Paper

Effects of four weeks L-carnitine L-tartrate ingestion on substrate utilization during prolonged exercise

International Journal of Sport Nutrition and Exercise Metabolism
Elizabeth M BroadStuart D R Galloway

Abstract

In a randomized, placebo-controlled, double-blind crossover design, 15 trained males undertook exercise trials during two 4 wk supplementation periods, with either 3 g L-Carnitine L-tartrate (LCLT) or 3 g placebo (P) daily. Total carbohydrate and fat oxidation during 90 min steady state cycling were not different between 0 or 4 wk within LCLT or P trials (mean +/- standard deviation: carbohydrate oxidation P0 99 +/- 36, P4W 111 +/- 27, LCLT0 107 +/- 33, LCLT4W 112 +/- 32 g, respectively; fat oxidation P0 99 +/- 28, P4W 92 +/- 21, LCLT0 94 +/- 18, LCLT4W 90 +/- 22 g, respectively). Subsequent 20 km time trial duration was shorter after P (P0 31:29 +/- 3:50, P4W 29:55 +/- 2:58 min:s, P < 0.01), with no significant change over LCLT (LCLT0 31:46 +/- 4:06, LCLT4W 31.19 +/- 4.08 min:s). Four weeks LCLT supplementation had no effect on substrate utilization or endurance performance.

Citations

Dec 6, 2011·The British Journal of Nutrition·Javier T Gonzalez, Emma J Stevenson
Mar 14, 2018·Nutrients·Roger FieldingAouatef Bellamine
Apr 24, 2010·Arquivos brasileiros de endocrinologia e metabologia·Christianne de Faria CoelhoRoberto Carlos Burini
Feb 2, 2017·American Journal of Physiology. Endocrinology and Metabolism·Colleen S DeanePhilip J Atherton
Jul 29, 2016·Journal of Nutritional Science and Vitaminology·Jisu KimKiwon Lim
Jan 8, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Antonio GnoniAnna M Giudetti

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