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。788Please respect copyright.PENANAXzlItizcKA
788Please respect copyright.PENANApSwnf9loj8
788Please respect copyright.PENANAzJMTJY4vFH
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?788Please respect copyright.PENANAhxKNrUpmSx
788Please respect copyright.PENANA8TQtBu61kL
788Please respect copyright.PENANAPadaLMAzYV
(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。788Please respect copyright.PENANAtqMyHvXseJ
788Please respect copyright.PENANABP453FY0l2
788Please respect copyright.PENANAxOFrvbAUkK
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。788Please respect copyright.PENANAC2Yix5OVeV
788Please respect copyright.PENANAoSOsasA4u7
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。788Please respect copyright.PENANAD9DipEo4g5
788Please respect copyright.PENANAxg5uSfzM3m
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788Please respect copyright.PENANAusk3pUgXmH
788Please respect copyright.PENANAKobvPEUrYh
70kg x 42.195km=788Please respect copyright.PENANAi4lDkRQXC6
2950kcal788Please respect copyright.PENANAgVNZLHSjlB
788Please respect copyright.PENANAA6RG3qo6ag
788Please respect copyright.PENANAdhIiu6GqOe
(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788Please respect copyright.PENANA0Y1VNgT7Jx
788Please respect copyright.PENANAydIokkjNJH
70kg x 1000 x 2% x 9788Please respect copyright.PENANAYFLzVOif2c
=12600 kcal788Please respect copyright.PENANAI3IfWJuSmw
788Please respect copyright.PENANA2hnxEQB5Nw
788Please respect copyright.PENANA4R85lOU0fg
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!788Please respect copyright.PENANAQpusM5QyGZ
788Please respect copyright.PENANAtWanRvFYEq
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;788Please respect copyright.PENANAk7Hey5Wlft
788Please respect copyright.PENANAdhTjNUI8sk
此計算方式是假設整場馬拉松是平地鋪設,沒有高低鈄坡。788Please respect copyright.PENANAu4gDWRDSri
788Please respect copyright.PENANACSWM0A7SZa
(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。788Please respect copyright.PENANAbKeJlDAckF
788Please respect copyright.PENANAkSp6CydW0L
788Please respect copyright.PENANAtO0nNmmeod
788Please respect copyright.PENANAC8547qHIcp
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。788Please respect copyright.PENANAAnuDZ53jL6
788Please respect copyright.PENANA9B2F0tjgAw
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/toc788Please respect copyright.PENANAcMhv00LbL2
788Please respect copyright.PENANA3Z7LeQ6i8Y
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。788Please respect copyright.PENANA8RRrKkmvYV
788Please respect copyright.PENANAQfQsKcJRFV
Link:788Please respect copyright.PENANA7DHw9d0aJY
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio788Please respect copyright.PENANAm3Pc7Kfrol
788Please respect copyright.PENANA8NFqc60SLG
788Please respect copyright.PENANAlKYjmu0RYc
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。788Please respect copyright.PENANAY7J2eYHDMr
https://www.instagram.com/potatopigtongue/788Please respect copyright.PENANAw7x2vCgdfQ
788Please respect copyright.PENANAA4cg8rrNaY
788Please respect copyright.PENANAzT5apFLWZ6
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367788Please respect copyright.PENANAYTzSeYgIAI
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/788Please respect copyright.PENANAdqcU05JneP
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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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