一輪劇烈運動過後,有時候難免會產生飢餓感。728Please respect copyright.PENANA2SYf8YygA9
在減肥或健身的前提下,我們應否遵從身體的意思,進食充飢呢?728Please respect copyright.PENANAvKcqpj7OD5728Please respect copyright.PENANAZ7ahgS1KSa
本篇文章,同樣會以科學角度深入淺出的方式探討這個問題。728Please respect copyright.PENANAx2MP5yniEx
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(圖2)從圖中可以見得到,持績進行帶氧運動的話,脂肪會被分解,導致血液脂肪含量增加,這現象相當之合理。728Please respect copyright.PENANAWKJzFQUfAX728Please respect copyright.PENANAzbJz5WjVda
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而「出奇意外」的是,運動過後的血液脂肪含量會急速飄升,比率在其後的4小時依然高過運動之前,顯示在運動過後的休息時段中,脂肪一直也在被分解。728Please respect copyright.PENANAUyUj0BOeOS
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而之所以會如此「神奇」,部份的原因乃出自於荷爾蒙裡頭!728Please respect copyright.PENANAsaqxDIAT2T
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(圖3)運動會促進腎上腺素及多巴胺等荷爾蒙的產生,為我們帶來愉悅感。728Please respect copyright.PENANAWstECRr6uD
在運動後的兩小時內,這些學術名稱統稱為兒茶酚胺(Catecholamines)的荷爾蒙濃度將依然高企。728Please respect copyright.PENANALA59SnttE4728Please respect copyright.PENANA9MFxPWHLon
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有研究發現,給予運動人士Propranolol藥物(阻礙腎上腺素功效)的話,運動時候的脂肪分解效率並不會有任何影響,但運動過後的血液脂肪含量急速飄升的效果則會大幅度下降。728Please respect copyright.PENANApD1kuR74EI
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另外亦有研究指出,運動所產生的生長激素(Growth Hormone)及胰島素(Insulin)的下降,兩者亦是導致運動過後血液脂肪含量急速飄升的因由。728Please respect copyright.PENANAfQT8713YsO
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可見,運動時候所帶來的荷爾蒙轉變,將為運動過後休息時段的脂肪新陳代謝帶來了重大影響;728Please respect copyright.PENANA2euxazjyP2
除荷爾蒙外,另有其他機制均扮演上一定程度的角色,下篇文章將會作出探討。728Please respect copyright.PENANAIO5t43o4ti
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(圖4)大概主要的功勞均歸功於荷爾蒙的關係,有研究發現運動過後,進食蛋白質食物並不會影響運動後脂肪一直在被分解的效果。728Please respect copyright.PENANAyWsIfqVBVj728Please respect copyright.PENANAHMcRdBvuhO
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而之於運動後進食碳水化合物的話,運動後脂肪一直在被分解的效果會有減弱的跡象(相信是影響了血液胰島素濃度的緣故),但大部份的碳水化合物將會轉化成為糖原(Glycogen),而非脂肪。728Please respect copyright.PENANA4wbm9fYfIS
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不過穩陣起見的話,為確保運動後的脂肪新陳代謝不受影響,還是在兩小時內盡量不要進食為妙,或者亦可選擇進食烚蛋來填補飢餓感。728Please respect copyright.PENANAtx7u97nQIA
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有興趣作深入探討的話,可參閱Ref1。728Please respect copyright.PENANA3c4Cn9ps7r
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。728Please respect copyright.PENANAIehbpoM3CG
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc728Please respect copyright.PENANAD8cTv8yP9a
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。728Please respect copyright.PENANAZFMw24DRSO
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio728Please respect copyright.PENANAcz86vT6N5Z
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Ref1:https://pubmed.ncbi.nlm.nih.gov/31973165/728Please respect copyright.PENANA6XUky5w79j