做運動有助減肥,就等同721事件包含警黑合作成份一樣,是無容置疑的事情。1432Please respect copyright.PENANA5m8WIJV4zG
1432Please respect copyright.PENANAxZfWmD2cj8
1432Please respect copyright.PENANAdEswpIbMhR
而本篇文章將嘗試以簡淺及略微深入兩種手法,以科學角度解釋做運動如何有助減肥。1432Please respect copyright.PENANAUxHMnKCg5K
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(圖2)要用一句話來概括運動如何有助減肥的話,那就是運動能夠調教身體的肌肉細胞更有傾向及更有效率分解身體的脂肪。1432Please respect copyright.PENANA92VSWlXdnV
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當我們持績進行帶氧運動的話,脂肪便會被分解。而被分解的脂肪會經由血液循環系統抵達肌肉部位,在氧氣、水及各蛋白酶的幫助下,脂肪會在肌肉細胞裡轉化成為細胞所需的能源(ATP),支撐運動所需的消耗。1432Please respect copyright.PENANAHuB9ldBFjP
1432Please respect copyright.PENANAKMaAQcg1WM
(圖3)綜合現今真實人類研究的數據及主流新陳代謝理論的話,不論男女,帶氧運動會對數個與脂肪新陳代謝有關的蛋白酶作出轉變。1432Please respect copyright.PENANAL2X4H2fxw5
1432Please respect copyright.PENANABqU5FXCIS7
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當脂肪來到肌肉細胞外部的時候,位於肌肉細胞外部表面的mLPL(muscle lipoprotein lipase)會將脂肪分解成為更簡單的結構,從而使脂肪結構得以進入細胞內層(cytoplasm)。1432Please respect copyright.PENANAV0d0P8df2y
1432Please respect copyright.PENANAL7Y1YxSAMy
有長期運動習慣的人士,運動時候的mLPL最大功率會比沒有運動習慣的人士為高(Ref1,2)。1432Please respect copyright.PENANAWldtk1Ina5
同時間,有研究指出進行為期8星期的帶氧運動的話,mLPL的功率會增加40-70%左右(Ref3,4)。1432Please respect copyright.PENANA3gNivTs32v
1432Please respect copyright.PENANAn7gvNBgZqH
這顯示出持續運動有助肌肉細胞更有效率吸收脂肪。1432Please respect copyright.PENANAkyv8VI0ctN
1432Please respect copyright.PENANAnpdxbwOcqK
脂肪結構進入細胞內層後,將會進行一系列的化學反應,然後再經由CPT1蛋白酶的幫助下進入mitochondria;1432Please respect copyright.PENANAL6SriKZHkS
mitochondria是真正將脂肪結構轉化成為ATP能源的主要地方。1432Please respect copyright.PENANAkdRR0zkdt1
1432Please respect copyright.PENANAIyQ9wN9xTy
研究顯示,有運動習慣的人士,運動時候的CPT1最大功率會比沒有運動習慣的人士高出20-90%不等(Ref5,6,7)。1432Please respect copyright.PENANAP6t8A5EZMx
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而當沒有運動習慣的人士持續進行8個月的帶氧運動後,CPT1的功率會比之前高出250%有多(Ref8)。1432Please respect copyright.PENANA2boNL59nsL
1432Please respect copyright.PENANAOln8QinEuY
脂肪結構進入mitochondria後,四步化學反應會將它們變成為更簡單的結構(acetyl-CoA),其中之一步將依靠HAD蛋白酶執行。1432Please respect copyright.PENANA9C5bxDypN9
1432Please respect copyright.PENANAB5pRPv0hCH
有研究指出持續數星期運動會促使HAD最大功率增加20-40%(Ref9,10)。而持續進行6星期HIIT運動(高強度間歇訓練,High-intensity interval training)亦會使HDA最大功率增加20-30%(Ref11,12)。1432Please respect copyright.PENANAJ4ETGduAke
1432Please respect copyright.PENANArNL5VORrse
脂肪結構變成為acetyl-CoA後,一系列的化學反應會再作進行,最後才能夠變成為ATP能源。1432Please respect copyright.PENANAXtUgU7tS4V
CS蛋白酶有份參與在其中一道的化學反應,而有著恆常運動習慣的人,其CS功率亦比沒有運動習慣的人士高出約33%(Ref13)。1432Please respect copyright.PENANANyXTJNtODZ
1432Please respect copyright.PENANA5w2KgwU8qT
(圖4)之於糖份新陳代謝方面,裡頭有著與脂肪新陳代謝重疊的化學反應步驟。1432Please respect copyright.PENANAZfANbFnQ9l
而長期運動的人士擁有比較高的PDK4功率(Ref14),能阻截糖份在mitochondria轉化成為ATP能源,改以在細胞內層(cytosol)進行,好讓脂肪能盡情地在Mitochondria裡轉化成為ATP能源。1432Please respect copyright.PENANAP4JcNslgOF
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總括而言,持續進行帶氧運動的話,肌肉細胞會自動調節更有效率地分解脂肪,同時亦會傾為改用脂肪而非糖份作為ATP能源的原料。1432Please respect copyright.PENANA2NzwMebU4Y
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這次深入中出嘗試加入了一些可能較難理解或較為沉悶的資料,若果反應未如理想的話,下篇將會調節回平日的深入淺出方法繼續探討各科學問題。1432Please respect copyright.PENANA1QHQeEG2ho
1432Please respect copyright.PENANAkDwnNsQ4vv
若果大部份人覺得無問題的話,下篇將會以同等的方式講解一下運動後的數小時應否進食。1432Please respect copyright.PENANAA4Dh1o369R
1432Please respect copyright.PENANA2FVcpZOhok
1432Please respect copyright.PENANARWaub9J3B5
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。1432Please respect copyright.PENANAW5on1H8JX3
1432Please respect copyright.PENANA1sBbgquBpo
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/toc1432Please respect copyright.PENANAUSm0OvIatw
1432Please respect copyright.PENANARxJFqAQ7g3
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。1432Please respect copyright.PENANAho6nSNTEkO
1432Please respect copyright.PENANAUx0fDUxNfR
Link:1432Please respect copyright.PENANA6Lpm43O62g
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1432Please respect copyright.PENANAZFFhnv3zxW
1432Please respect copyright.PENANAjbJJzdNm4s
1432Please respect copyright.PENANAm37o29WlOE
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1432Please respect copyright.PENANAf4TVgJjMwb
1432Please respect copyright.PENANAGTAejN6H5T
Ref1:https://pubmed.ncbi.nlm.nih.gov/15155715/1432Please respect copyright.PENANA2bGC6kWvR7
Ref2:https://pubmed.ncbi.nlm.nih.gov/212665/1432Please respect copyright.PENANAQ2cK4zJudh
Ref3:https://pubmed.ncbi.nlm.nih.gov/6667282/1432Please respect copyright.PENANAIE5nofc5aX
Ref4:https://pubmed.ncbi.nlm.nih.gov/2643634/1432Please respect copyright.PENANA1nyfKZ6UlL
Ref5:https://pubmed.ncbi.nlm.nih.gov/11912554/1432Please respect copyright.PENANAe4KapKgcM2
Ref6:https://pubmed.ncbi.nlm.nih.gov/9655768/1432Please respect copyright.PENANAGt9ZIOvGj8
Ref7:https://pubmed.ncbi.nlm.nih.gov/10710500/1432Please respect copyright.PENANAmRxnFjkqkR
Ref8:https://pubmed.ncbi.nlm.nih.gov/16464906/1432Please respect copyright.PENANAGvCrWXK2c1
Ref9:https://pubmed.ncbi.nlm.nih.gov/22235293/1432Please respect copyright.PENANA5K5o5ojpZj
Ref10:https://pubmed.ncbi.nlm.nih.gov/19106247/1432Please respect copyright.PENANAKI1czilyP8
Ref11:https://pubmed.ncbi.nlm.nih.gov/19088769/1432Please respect copyright.PENANA1l91fuy7vS
Ref12:https://pubmed.ncbi.nlm.nih.gov/17991697/1432Please respect copyright.PENANA9K4RmQd6ME
Ref13:https://pubmed.ncbi.nlm.nih.gov/25057335/1432Please respect copyright.PENANAgcJ0uIkzFQ
Ref14:https://pubmed.ncbi.nlm.nih.gov/15020699/1432Please respect copyright.PENANAarEnx0oTTE
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #63
深入中出–做運動有助減肥的科學根據
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