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。1068Please respect copyright.ＰＥＮＡＮＡFRCBqRtQYJ
1068Please respect copyright.ＰＥＮＡＮＡek0rMbuJDc
1068Please respect copyright.ＰＥＮＡＮＡeDmaws4Efd
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?1068Please respect copyright.ＰＥＮＡＮＡdebUHSCgnq
1068Please respect copyright.ＰＥＮＡＮＡb8o9so9hLS
1068Please respect copyright.ＰＥＮＡＮＡyeTKFJcVCI
（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。1068Please respect copyright.ＰＥＮＡＮＡd7aDhg30hb
1068Please respect copyright.ＰＥＮＡＮＡg9aP6ryBGg
1068Please respect copyright.ＰＥＮＡＮＡ4XVUN0W5xK
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。1068Please respect copyright.ＰＥＮＡＮＡAt33FrM1So
1068Please respect copyright.ＰＥＮＡＮＡVzBQ3ARSwb
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。1068Please respect copyright.ＰＥＮＡＮＡyVutGQxNd3
1068Please respect copyright.ＰＥＮＡＮＡM3bXQlbhO9
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1068Please respect copyright.ＰＥＮＡＮＡwvNVy1Fghp
1068Please respect copyright.ＰＥＮＡＮＡgSHnkwLagF
70kg x 42.195km=1068Please respect copyright.ＰＥＮＡＮＡ5IyxwgkkMk
2950kcal1068Please respect copyright.ＰＥＮＡＮＡKKoahErCgV
1068Please respect copyright.ＰＥＮＡＮＡZNiVCLeNmT
1068Please respect copyright.ＰＥＮＡＮＡqPQ8FyPk3V
（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1068Please respect copyright.ＰＥＮＡＮＡjYgj0w3OBA
1068Please respect copyright.ＰＥＮＡＮＡubBX1FE3j0
70kg x 1000 x 2% x 91068Please respect copyright.ＰＥＮＡＮＡ6N4KPQIKtr
=12600 kcal1068Please respect copyright.ＰＥＮＡＮＡNNIR38lx4U
1068Please respect copyright.ＰＥＮＡＮＡRJ8ykKUTKT
1068Please respect copyright.ＰＥＮＡＮＡ1ebo14T6QR
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!1068Please respect copyright.ＰＥＮＡＮＡXbUeZFz74U
1068Please respect copyright.ＰＥＮＡＮＡjQ3oyIJcPY
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；1068Please respect copyright.ＰＥＮＡＮＡxtwJdbj333
1068Please respect copyright.ＰＥＮＡＮＡRnQsBW8CUz
此計算方式是假設整場馬拉松是平地鋪設，沒有高低鈄坡。1068Please respect copyright.ＰＥＮＡＮＡdL5omj0gQS
1068Please respect copyright.ＰＥＮＡＮＡ40yy2xuXX0
（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。1068Please respect copyright.ＰＥＮＡＮＡK8pni1zrEK
1068Please respect copyright.ＰＥＮＡＮＡPQKbG38gYo
1068Please respect copyright.ＰＥＮＡＮＡfPXfGQalSd
1068Please respect copyright.ＰＥＮＡＮＡ5FgQL65tJG
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。1068Please respect copyright.ＰＥＮＡＮＡVSeRRIGU8P
1068Please respect copyright.ＰＥＮＡＮＡBBOQ8yOTNv
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/toc1068Please respect copyright.ＰＥＮＡＮＡPbHgpGeJ5L
1068Please respect copyright.ＰＥＮＡＮＡrdmW8DaLjh
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。1068Please respect copyright.ＰＥＮＡＮＡgzkZ7pWU9c
1068Please respect copyright.ＰＥＮＡＮＡGcCelJ4HUg
Link:1068Please respect copyright.ＰＥＮＡＮＡDiJaS5ksEt
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1068Please respect copyright.ＰＥＮＡＮＡ4HyhhHWiKW
1068Please respect copyright.ＰＥＮＡＮＡrpar4hamY9
1068Please respect copyright.ＰＥＮＡＮＡAYhLldCBml
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1068Please respect copyright.ＰＥＮＡＮＡDF9Nw49xyr
https://www.instagram.com/potatopigtongue/1068Please respect copyright.ＰＥＮＡＮＡTbomBLz2im
1068Please respect copyright.ＰＥＮＡＮＡK255HHgWLQ
1068Please respect copyright.ＰＥＮＡＮＡ9XuL49R1WB
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.3671068Please respect copyright.ＰＥＮＡＮＡHnUdshxUsC
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/1068Please respect copyright.ＰＥＮＡＮＡqTrXb5DCxD