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。786Please respect copyright.PENANA9IIbhXudps
786Please respect copyright.PENANAsSLvu3BRI5
786Please respect copyright.PENANAHj8Qg5Xc9c
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?786Please respect copyright.PENANANB908hkloT
786Please respect copyright.PENANAXI6iwyTR26
786Please respect copyright.PENANADjGFsztDCl
(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。786Please respect copyright.PENANA6qVY2PPIxS
786Please respect copyright.PENANAMJlmKpaQX0
786Please respect copyright.PENANAFpSyP3UCUw
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。786Please respect copyright.PENANA8Wjn95ee3m
786Please respect copyright.PENANAiwRdMi0dYV
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。786Please respect copyright.PENANA3Jtofgyt3S
786Please respect copyright.PENANAkWZUqE3TBR
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786Please respect copyright.PENANA7m1qHSEUGE
786Please respect copyright.PENANAPdZaYVPj9q
70kg x 42.195km=786Please respect copyright.PENANAWWnchaxN7a
2950kcal786Please respect copyright.PENANAMIHQcrUZM3
786Please respect copyright.PENANAuGrVSLuceM
786Please respect copyright.PENANAA2DBtIL3af
(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786Please respect copyright.PENANAyqXw5CVow7
786Please respect copyright.PENANAf2K1YN18YX
70kg x 1000 x 2% x 9786Please respect copyright.PENANAi83PpTnDdz
=12600 kcal786Please respect copyright.PENANAlIu7DA0NUR
786Please respect copyright.PENANAQrFPHjTUpN
786Please respect copyright.PENANAqWTDitursG
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!786Please respect copyright.PENANAXg8MH2y8Uw
786Please respect copyright.PENANAx7gxyIxW9v
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;786Please respect copyright.PENANAjgmJ140kY7
786Please respect copyright.PENANA2u2eGgB7Mo
此計算方式是假設整場馬拉松是平地鋪設,沒有高低鈄坡。786Please respect copyright.PENANAV8UWcbSHlK
786Please respect copyright.PENANAVbLNsseBIP
(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。786Please respect copyright.PENANAYQnFbKb9ku
786Please respect copyright.PENANA0dDjl9HnE8
786Please respect copyright.PENANAKkBfbe8V39
786Please respect copyright.PENANA9ZIaFuJ2fB
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。786Please respect copyright.PENANAjTb9eDT2lH
786Please respect copyright.PENANAv7O8miok6l
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/toc786Please respect copyright.PENANARdnK6UffTR
786Please respect copyright.PENANA2ym5MWGFxg
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。786Please respect copyright.PENANA2wpzap8FWX
786Please respect copyright.PENANAwWZRvf4B5O
Link:786Please respect copyright.PENANA5zJVZR1UoA
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio786Please respect copyright.PENANA14FFRGem9T
786Please respect copyright.PENANAD7NQccA82T
786Please respect copyright.PENANAaOOlMInPE2
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。786Please respect copyright.PENANAOJRemLLOzy
https://www.instagram.com/potatopigtongue/786Please respect copyright.PENANAd5GpzifK5U
786Please respect copyright.PENANAGxeMg8beoT
786Please respect copyright.PENANAfTSPHSToOS
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367786Please respect copyright.PENANAbNHzZU65m1
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/786Please respect copyright.PENANA0fIcEdefhQ
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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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