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。98Please respect copyright.PENANA6MXOfjoErK98Please respect copyright.PENANAuLMkIfTkvz
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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?98Please respect copyright.PENANAymOAhaKlxm
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(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。98Please respect copyright.PENANAqNHAZALjgC98Please respect copyright.PENANAHHKSqtxaJ9
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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。98Please respect copyright.PENANAvwIGIURcT7
98Please respect copyright.PENANAEe7jMYyFNK
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。98Please respect copyright.PENANA5ZJG9aRRKI
98Please respect copyright.PENANAMOvcZujTDj
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98Please respect copyright.PENANAnvdXipbWip
98Please respect copyright.PENANAPigjOD0Jeq
70kg x 42.195km=98Please respect copyright.PENANAgbaK02uuDb
2950kcal98Please respect copyright.PENANAkzNGbbJ0O0
98Please respect copyright.PENANA2qy36zqX6B
98Please respect copyright.PENANAb3Fgb3MZmT
(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98Please respect copyright.PENANAdBl7NLXIcV
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70kg x 1000 x 2% x 998Please respect copyright.PENANAK6kJ8A2zK6
=12600 kcal98Please respect copyright.PENANAy1hmjwtNoC98Please respect copyright.PENANAJ4VBxORgjc
98Please respect copyright.PENANAkXWMG8w2Nm
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!98Please respect copyright.PENANAVdybCqEvSj
98Please respect copyright.PENANACRFnkx3Plo
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;98Please respect copyright.PENANAYd5CDaFwGF
98Please respect copyright.PENANAktK3y97wFM
此計算方式是假設整場馬拉松是平地鋪設,沒有高低鈄坡。98Please respect copyright.PENANA8qtTaoyuTu
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(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。98Please respect copyright.PENANAFgBXqsNOI998Please respect copyright.PENANAkU4GMkc9A5
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98Please respect copyright.PENANA6zQju3ZXff
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。98Please respect copyright.PENANATNlfr6pdg6
98Please respect copyright.PENANA93ciokW4E3
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/toc98Please respect copyright.PENANA7jKJLc76mV
98Please respect copyright.PENANA2cV4Da3cQV
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。98Please respect copyright.PENANA7W0ah36gjn
98Please respect copyright.PENANAriphMhogmK
Link:98Please respect copyright.PENANAyUQul3GKnX
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio98Please respect copyright.PENANAKWqISRWwtn
98Please respect copyright.PENANAaGR4w1BJ8U
98Please respect copyright.PENANAf3NKXhItc6
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。98Please respect copyright.PENANAPJ0mKgUetF
https://www.instagram.com/potatopigtongue/98Please respect copyright.PENANAPd2jgZxk5P
98Please respect copyright.PENANANxXWCdkLt2
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Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.36798Please respect copyright.PENANAm0jzpQXbZU
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/98Please respect copyright.PENANA48Ehuavslr
copyright protection94PENANAcSepm9XBk6
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科普專欄–薯不揀單
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科普專欄–薯不揀單
Author:
薯仔聞茱莉

ISSUE #83
深入淺出–點解瘦削運動員都能夠跑畢馬拉松全程?
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