|Appears in Collections:||Faculty of Health Sciences and Sport Journal Articles|
|Title:||Effects of four weeks L-Carnitine L-tartrate ingestion on substrate utilization during prolonged exercise|
|Author(s):||Broad, Elizabeth M|
Maughan, Ronald J
Galloway, S D
|Citation:||Broad EM, Maughan RJ & Galloway SD (2005) Effects of four weeks L-Carnitine L-tartrate ingestion on substrate utilization during prolonged exercise. International Journal of Sport Nutrition and Exercise Metabolism, 15 (6), pp. 665-679. http://journals.humankinetics.com/ijsnem-back-issues/IJSNEMVolume15Issue6December/EffectsofFourWeeksLCarnitineLtartrateIngestiononSubstrateUtilizationDuringProlongedExercise|
|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 (LCLT031:46 ± 4:06, LCLT4W 31.19 ± 4.08 min:s). Four weeks LCLT supplementation had no effect on substrate utilization or endurance performance.|
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