EFFECT OF L-CARNITINE SUPPLEMENTATION ON MUSCLE AND BLOOD CARNITINE CONTENT AND LACTATE ACCUMULATION DURING HIGH-INTENSITY SPRINT CYCLING

被引：74

作者：

BARNETT, C ^{[1
]}

COSTILL, DL ^{[1
]}

VUKOVICH, MD ^{[1
]}

COLE, KJ ^{[1
]}

GOODPASTER, BH ^{[1
]}

TRAPPE, SW ^{[1
]}

FINK, WJ ^{[1
]}

机构：

[1] BALL STATE UNIV,HUMAN PERFORMANCE LAB,MUNCIE,IN 47306

来源：

INTERNATIONAL JOURNAL OF SPORT NUTRITION | 1994年 / 4卷 / 03期

关键词：

HIGH-INTENSITY EXERCISE; ACETYL-COA/COA RATIO; PYRUVATE DEHYDROGENASE; ACID-BASE BUFFERING IN MUSCLE;

D O I：

10.1123/ijsn.4.3.280

中图分类号：

R15 [营养卫生、食品卫生]; TS201 [基础科学];

学科分类号：

100403 ;

摘要：

This study examined the effects of 14 days of L-carnitine supplementation on muscle and blood carnitine fractions, and muscle and blood lactate concentrations, during high-intensity sprint cycling exercise. Eight subjects performed three experimental trials: control I (CON I, Day 0), control II (CON II, Day 14), and L-carnitine (L-CN, Day 28). Each trial consisted of a 4-min ride at 90% VO2max, followed by a rest period of 20 min, and then five repeated 1-min rides at 115% VO2max (2 min rest between each). Following CON II, all subjects began dietary supplementation of L-carnitine for a period of 14 days (4 g/day). Plasma total acid soluble and free carnitine concentrations were significantly higher (p < .05) at all time points following supplementation. L-carnitine supplementation had no significant effect on muscle carnitine content and thus could not alter lactate accumulation during exercise.

引用

页码：280 / 288

页数：9