科普專欄–薯不揀單 - 深入淺出–點解瘦削運動員都能夠跑畢馬拉松全程？

在長時間的運動下，脂肪會為身體帶來能源，支撐身體肌肉所需。馬拉松全程為42.195km，脂肪所提供的能源協助絕對不可或缺。1032Please respect copyright.ＰＥＮＡＮＡ6dpyAaEsR7
1032Please respect copyright.ＰＥＮＡＮＡgqR8s8qZ0F
1032Please respect copyright.ＰＥＮＡＮＡdfw2b7CAQZ
在這個前題下，為何為數不少的瘦削運動員都可以足夠應付長距離的馬拉松呢?1032Please respect copyright.ＰＥＮＡＮＡLiO4IY8FI7
1032Please respect copyright.ＰＥＮＡＮＡnzv0BEWTZh
1032Please respect copyright.ＰＥＮＡＮＡKLMLHNnFe0
（圖2）在此，我們嘗試一下利用數學角度，以卡路里的消耗量探討這一個問題。1032Please respect copyright.ＰＥＮＡＮＡCqVVjGOdpi
1032Please respect copyright.ＰＥＮＡＮＡvNCqQ87QZE
1032Please respect copyright.ＰＥＮＡＮＡ8XmoRoAwXz
有研究確認(Ref1,2)，身體消耗的卡路里是與行走總距離有關，而非行走速度。1032Please respect copyright.ＰＥＮＡＮＡFFDVDQhYTE
1032Please respect copyright.ＰＥＮＡＮＡE75o8Dmrrk
他們最終得出的公式為每1kg行走1km平地就會消耗1卡路里。1032Please respect copyright.ＰＥＮＡＮＡ6zawYnce0B
1032Please respect copyright.ＰＥＮＡＮＡ9FgiysSclM
如果我們假設1個70kg的男人跑一場馬拉松，所消耗的總卡路里就會為1032Please respect copyright.ＰＥＮＡＮＡDfIrVm3OKm
1032Please respect copyright.ＰＥＮＡＮＡlaoXcWib5f
70kg x 42.195km=1032Please respect copyright.ＰＥＮＡＮＡiGXB2ancrn
2950kcal1032Please respect copyright.ＰＥＮＡＮＡcPPONFOkFE
1032Please respect copyright.ＰＥＮＡＮＡtcJY0jW31J
1032Please respect copyright.ＰＥＮＡＮＡhoNiK21o53
（圖3）身體的脂肪每克約可以提供9kcal，如果我們用上最極端的例子，負責儲存能源的體脂只佔身體重量2% (正常為10-32%)的話，所提供得到的能源就會是1032Please respect copyright.ＰＥＮＡＮＡRk4UWkNGo6
1032Please respect copyright.ＰＥＮＡＮＡXA0a8Fns4e
70kg x 1000 x 2% x 91032Please respect copyright.ＰＥＮＡＮＡQz2OHoCrk4
=12600 kcal1032Please respect copyright.ＰＥＮＡＮＡGP0BWlFUlz
1032Please respect copyright.ＰＥＮＡＮＡ6qGOyGjUxB
1032Please respect copyright.ＰＥＮＡＮＡxWtg9S4kAx
而基於每場馬拉松所消耗的卡路里僅為2950kcal關係，12600/2950 = 4.27，單憑身體脂肪所提供的能源，就足以應付4場馬拉松!1032Please respect copyright.ＰＥＮＡＮＡiQhFa2JIMv
1032Please respect copyright.ＰＥＮＡＮＡ1AiI0ahdUf
這個跑4次馬拉松的結果是以極低（儲存能量用的體脂2%）這個極端例子作計算，可以推算得到正常人的話絕對是遊刃有餘跑1場馬拉松；1032Please respect copyright.ＰＥＮＡＮＡ3KRNvcwsUp
1032Please respect copyright.ＰＥＮＡＮＡZFJuCrPMG0
此計算方式是假設整場馬拉松是平地鋪設，沒有高低鈄坡。1032Please respect copyright.ＰＥＮＡＮＡNsSZw37z5b
1032Please respect copyright.ＰＥＮＡＮＡ3NxbwTWyWZ
（圖4）不過，魔鬼在細節，這集反應熱烈的話，下一集將會探討這個計算方式的漏洞以及馬拉松選手經常會遇到所謂Hit The Wall的問題。1032Please respect copyright.ＰＥＮＡＮＡst7TGgxXCX
1032Please respect copyright.ＰＥＮＡＮＡ8xON3xpmhG
1032Please respect copyright.ＰＥＮＡＮＡ36ZbaCFSAx
1032Please respect copyright.ＰＥＮＡＮＡsexat1LI0u
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。1032Please respect copyright.ＰＥＮＡＮＡn3gY9Pqbwa
1032Please respect copyright.ＰＥＮＡＮＡtAY92Y78gk
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/toc1032Please respect copyright.ＰＥＮＡＮＡreeY4BLESC
1032Please respect copyright.ＰＥＮＡＮＡgWkR2TXyFp
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。1032Please respect copyright.ＰＥＮＡＮＡiEIlzB8MMy
1032Please respect copyright.ＰＥＮＡＮＡHxSv2Vp9r8
Link:1032Please respect copyright.ＰＥＮＡＮＡplFXg3GoLD
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1032Please respect copyright.ＰＥＮＡＮＡzFPvqcat0Q
1032Please respect copyright.ＰＥＮＡＮＡT0LU7xdMie
1032Please respect copyright.ＰＥＮＡＮＡIoa7T43IFy
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1032Please respect copyright.ＰＥＮＡＮＡjrqjVdM1sL
https://www.instagram.com/potatopigtongue/1032Please respect copyright.ＰＥＮＡＮＡrQM9SVfZom
1032Please respect copyright.ＰＥＮＡＮＡ5FoYKsjyC5
1032Please respect copyright.ＰＥＮＡＮＡH4j6JXtUDJ
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.3671032Please respect copyright.ＰＥＮＡＮＡAEFEm6lhC2
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/1032Please respect copyright.ＰＥＮＡＮＡeWYQtH7PZt