| Summary: | 碩士 === 國立臺中教育大學 === 體育學系碩士班 === 100 === Effects of 28 days ginseng supplementation on
glycogen synthesis in exercised human skeletal muscle
Abstract
The active components of ginseng are considered to be ginsenosides, a group of steroidal saponins. the root of ginseng is a commonly used as herbal medicine. Little studies are available regarding to whether 28 days ginseng supplementation can enhance muscle glycogen synthesis in exercised human skeletal muscle. Nine healthy male subjects (aged: 21.87±0.87 yrs) completed crossover crossover trials after a 60-min cycling exercise at 70–75% VO2 max separated by 28 days. Subjects consumed 400 mg of ginseng or placebo for 28 days. On the 29th morning, they consumed 400 mg of ginseng or placebo with high carbohydrate meals (2 g carbohydrate/ kg body weight, 80 % carbohydrate, 8 % fat, 12 % protein) for a 24-hour recovery following exercise. Muscle biopsy samples were collected from vastus lateralis immediately after exercise and 3h, 24h during recovery. Blood samples were collected before the exercise, every 30 minute within 3 hours after the exercise and 24h. We found 28 days ginseng supplementation significantly lowered post-meal insulin and glucose response with similar carbohydrate meal supplementation compared to placebo. The synthesis rate of glycogen during the 3-hour recovery is significantly higher compared to placebo (P<0.5). Therefore, the result of this study demonstrated that 28 days ginseng supplementation is beneficial for athletes, who are training for competition, on muscle glycogen synthesis after exercise.
Keywords: Exercise, Ginseng, Muscle gycogen
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