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。897Please respect copyright.PENANARJMRMNsoN6
897Please respect copyright.PENANA9bVSH2amGD
897Please respect copyright.PENANAraxwkzZVOQ
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?897Please respect copyright.PENANAUPhYWDwyEQ
897Please respect copyright.PENANAWI9e4ZohEq
897Please respect copyright.PENANAZEbJqS9QQY
(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。897Please respect copyright.PENANAaLnUSfVHeZ
897Please respect copyright.PENANA8VSM3qkg27
897Please respect copyright.PENANAYzW74e6rzT
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。897Please respect copyright.PENANAEhpDxBJbdq
897Please respect copyright.PENANAUOKZyvSpvW
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。897Please respect copyright.PENANARzLAG3U2al
897Please respect copyright.PENANA4hXg0rUn8H
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897Please respect copyright.PENANAGNAUK7ptI4
897Please respect copyright.PENANAD8HEMDSYMn
70kg x 42.195km=897Please respect copyright.PENANAJS9CZx43r5
2950kcal897Please respect copyright.PENANAqMKEXaCT2V
897Please respect copyright.PENANAx0ehEFrpTP
897Please respect copyright.PENANAS8UJoUlHva
(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897Please respect copyright.PENANAMjTGa7ybWz
897Please respect copyright.PENANACKNnxFC7C8
70kg x 1000 x 2% x 9897Please respect copyright.PENANArOqs0XfGyG
=12600 kcal897Please respect copyright.PENANApyxd45Oj7N
897Please respect copyright.PENANATwWbhRZEdX
897Please respect copyright.PENANAuS0fWo4WkO
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!897Please respect copyright.PENANAw1UysUy2TB
897Please respect copyright.PENANAcVRl5edX5N
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;897Please respect copyright.PENANAefRbh1Ikoo
897Please respect copyright.PENANAbIkQzDhKKr
此計算方式是假設整場馬拉松是平地鋪設,沒有高低鈄坡。897Please respect copyright.PENANAqKG6Gp1asu
897Please respect copyright.PENANAwhmbluIbQi
(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。897Please respect copyright.PENANAlamWSJPU4I
897Please respect copyright.PENANAkrib9HLzHx
897Please respect copyright.PENANA9aQInRDaTC
897Please respect copyright.PENANADKbqBUuk9R
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。897Please respect copyright.PENANAp6GmZ9a6eH
897Please respect copyright.PENANARGBAGEjhrL
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/toc897Please respect copyright.PENANAnIqzwO9D98
897Please respect copyright.PENANATUmEix2bNT
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。897Please respect copyright.PENANAfFvlIfMDM4
897Please respect copyright.PENANAvcYyLKYzkG
Link:897Please respect copyright.PENANANDVdNj0FJY
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio897Please respect copyright.PENANABHrlbPpIXT
897Please respect copyright.PENANAKZlLr6ozdy
897Please respect copyright.PENANA6nNi8vZ89P
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。897Please respect copyright.PENANAUDvyh4Oo08
https://www.instagram.com/potatopigtongue/897Please respect copyright.PENANA0b9aXj5Q9R
897Please respect copyright.PENANAKM3DVmMdST
897Please respect copyright.PENANAX0m5u2Y1XO
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367897Please respect copyright.PENANAk3bCo6NzZI
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/897Please respect copyright.PENANA0FBKh4hlnG