%0 Journal Article %A Sho,a, Kazemi, M %A Kimiagar, M %A Rastmanesh, R %A A. Taleban, F %T Effects of L-carnitine acute supplementation on blood lactate levels and the distance run by athletes on treadmill, by the time to reach anaerobic thresholds %J Scientific Journal of Kurdistan University of Medical Sciences %V 10 %N 3 %U http://sjku.muk.ac.ir/article-1-228-en.html %R %D 2005 %K Key words: lactic acid level, L-carnitine, Acute supplementation, Distance covered, %X   ABSTRACT  Background and Aim: Results of previous studies about the effects of L-carnitine supplementation on lactic acid production and improve physical performance during exercise are conflicting. This study was carried out to determine the effect of a single dose of L-carnitine supplement (2 grams in the form of pills), 2 hours before exercise, on blood lactate levels during and after exercise and the distance run by athletes at anaerobic threshold. Materials and Methods: During a single-blind crossover clinical trial, 12 elite Iranian male Taekwondo players with mean values (±SD) for age, weight, height, body mass index of 19.9±2.0, 71.3±6.4, of 179±4.5, and of 22.0±1.2 respectively were studied. Subjects were randomly assigned to either L-carnitine (n=6) or placebo groups (n=6). The washout period was 72 hours. L-carnitine group received 2 grams of L-carnitine pills dissolved in 200 ml of a sore solution (water containing 6 drops of lemon juice), while the placebo group received 200 ml water flavored with 6 drops of lemon juice. Three blood samples were obtained at 2 hours before, at the end of, and 30 minutes after the end of exercise tests. The exercise tests were carried out according to Conconi protocol on treadmill. Results: Blood lactate levels per meter of distance, from the start to either the end of the exercise or to 30 minutes after the exercise were lower in L-carnitine group (p %> http://sjku.muk.ac.ir/article-1-228-en.pdf %P 43-52 %& 43 %! Effects of L-carnitine acute supplementation on blood lactate levels and the distance run by athletes on treadmill, by the time to reach anaerobic thresholds %9 Original Research %L A-10-1-201 %+ %G eng %@ 1560-652X %[ 2005