Effects of four weeks L-carnitine L-tartrate ingestion on substrate utilization during prolonged exercise
Effects of four weeks L-carnitine L-tartrate ingestion on substrate utilization during prolonged exercise
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DOI:
10.1123/ijsnem.15.6.665
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发表时间:
2005-12-01
影响因子:
2.5
通讯作者:
Galloway, SDR
中科院分区:
文献类型:
--
作者:
Broad, EM;Maughan, RJ;Galloway, SDR
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 P-0 99 +/- 36, P-4W III +/- 27, LCLT, 107 +/- 33, LCLT4W 112 +/- 32 g, respectively; fat oxidation P-0 99 +/- 28, P-4W 92 +/- 21, LCLT0 94 +/- 18, LCLT4W 90 +/- 22 g, respectively). Subsequent 20 km time trial duration was shorter after P (P-0 31:29 +/- 3:50, P-4W 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.