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題名 | Effects of Rhodiola rosea-Cordyceps sinensis Supplementation on Glycogen Synthesis in Exercised Human Skeletal Muscle=紅景天--冬蟲夏草增補對人體運動後肌肉肝醣合成的影響 |
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作者 | 蔡佈曦; 林峰樟; 黃俊清; 侯建文; 程一雄; | 書刊名 | 大專體育學刊 |
卷期 | 21:4 2019.12[民108.12] |
頁次 | 頁375-386 |
分類號 | 993.194 |
關鍵詞 | 高碳水化合物飲食; 腳踏車運動; 脂肪氧化; High-carbohydrate meal; Cycling exercise; Fat oxidation; |
語文 | 英文(English) |
中文摘要 | 人體骨骼肌肉肝醣是身體耐力運動表現重要能量來源。本研究目的在探討7天口服紅景天-冬蟲夏草補充劑(Rr-Cs組)對運動後骨骼肌肉肝醣合成的影響。招募7位健康男性(平均年齡20.1±0.3歲)接受隨機交叉實驗設計研究,受試者口服2,000 mg紅景天—冬蟲夏草補充劑或安慰劑7天,隔夜禁食12小時後接受單次70%最大攝氧量維持60rpm轉速之腳踏車運動挑戰,持續60分鐘,運動後大腿股外側肌肌肉穿刺收集肌肉樣本,後續立即補充高碳水化合物飲食(含每公斤體重2克的碳水化合物,飲食比例為碳水化合物占80%,脂肪占8%,蛋白質12%),運動後4小時第二次收集肌肉樣本,同時收集運動恢復期血液和氣體樣本。研究結果顯示7天紅景天-冬蟲夏草補充後明顯降低運動恢復期血液葡萄糖和胰島素反應,提升運動後肌肉肝醣再合成程度,同時呼吸交換率(respiratory exchange ratio, RER)反應明顯低於安慰劑處理。研究結論7天口服紅景天-冬蟲夏草補充劑,增加運動恢復期人體骨骼肌肉肝醣合成,可能與提升身體胰島素敏感性及能量來源偏向脂肪氧化的緣故。 |
英文摘要 | Glycogen stored in the skeletal muscle is the primary fuel source for endurance performance. This study aimed to investigate the effect of oral Rhodiola rosea-Cordyceps sinensis (Rr-Cs) supplementation on glycogen synthesis in exercised human skeletal muscle. Seven healthy male subjects (aged 20.1 ± 0.3 years) underwent crossover trials by consuming either Rr-Cs (2,000 mg/day) or placebo supplements for 7 days. On the 8th day morning, all subjects were asked to perform a single bout of cycling exercise at 70% VO_(2max) for 60 min with approximately 60 rpm, following a 12 hours overnight fasting. First biopsied muscle samples were obtained immediately after exercise from the vastus lateralis of participants. Subsequently, subjects consumed a high-carbohydrate meal (2 g carbohydrate/kg body weight, 80% carbohydrate, 8% fat, and 12% protein). Second muscle samples were obtained 4 hours after exercise. Blood samples and gaseous exchange samples were collected during post-exercise recovery period. Results demonstrated that the post-meal glucose, insulin response, and respiratory exchange ratio were significantly decreased in subjects who consumed Rr-Cs compared to placebo. Muscle glycogen levels at 4 hours after exercise were higher in Rr-Cs trial than in placebo trial. Therefore, this study concludes that Rr- Cs supplementation for 7 days could enhance glycogen resynthesis in exercised human skeletal muscle, which might be associated with whole body insulin sensitivity and energy reliance on fat oxidation during post-exercise recovery period. |
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