喜歡我們節目的話,歡迎小額贊助我們>https://open.firstory.me/join/dconcall 主持人:宋晏仁醫師 主題:沒有糖的日子怎麼過? 生酮飲食的「風潮」每隔幾年都會盛行一陣,過去十年對低碳生酮飲食與高碳「標準」飲食的論戰,因為科學研究方法的精細化,爭議並沒有解決,反而衍生更多值得深入討論的「能量代謝生理學」的本問題。其中一個問題就是,長期低碳水飲食,是否會耗竭人體內的肝醣,尤其是肌肉內的肝醣,導致運動能力下降,運動員尤其在意這個問題。在生酮飲食的風潮下,當然科學家也深入探討了這個議題,並且意外的發現,長期(六個月或更久)低碳飲食的運動員,其肌肉內的基礎肝醣含量,與高碳「標準」飲食者並無差異;更令人好奇的是,在進行極速運動後,以低碳飲食補充營養,其肌肉內肝醣回補的速度,與高碳標準飲食者,也沒有差異,設置爆發力的快速運動,也只有統計上稍微差的表現,然而對於高耐力長時間的運動,低碳飲食者卻又更好的表現。這是為什麼?人類長期不吃糖或醣類(碳水化合物)照樣可以進行完整的肝醣回補生理,這又是為什麼?科學數據告訴我們,極低脂肪、極低蛋白飲食,對身體傷害明顯而巨大,但是長期低糖(醣、碳水)飲食,除了增加LDL(壞膽固醇)這個「風險因子」,居然沒有明顯傷害,甚至沒有任何「缺乏」,更談不上「耗竭」。沒有糖的日子怎麼過?本集就來探討這個有趣的問題。 參考論文: 1. Vigh‑Larsen, J. F., Ørtenblad, N., Spriet, L. L., Overgaard, K., & Mohr, M. (2021). Muscle Glycogen Metabolism and High‑Intensity Exercise Performance: A Narrative Review. Sports Medicine, 1855-1874. https://link.springer.com/article/10.1007%2Fs40279-021-01475-0 2. Volek JS, Freidenreich DJ, Saenz C, et al. Metabolic characteristics of keto-adapted ultra-endurance runners. Metabolism. 2016;65(3):100-110. doi:10.1016/j.metabol.2015.10.028 3. Vitti, Steven & Miele, Emily & Bruneau Jr, Michael & Christoph, Laura. (2022). The Effects of a Six-Week Ketogenic Diet on CrossFit Performance Parameters: A Pilot Study. International Journal of Kinesiology and Sports Science. 10. 25-33. 10.7575/aiac.ijkss.v.10n.2p.25. (non-peer reviewed) ----- ▍聽更多:https://thehearsaytw.wixsite.com/thehearsaypodcast ▍粉絲團:https://www.facebook.com/TheHearSayChannel ▍合作贊助:[email protected] Powered by Firstory Hosting
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