上一篇用字錯誤,造成混亂,非常抱歉。今篇特設釐清因為用字錯誤所做成的概念困擾和錯誤。323Please respect copyright.PENANAE0bMeiP2zI
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上一篇提及身體消耗的卡路里是與步行總距離有關,其正確用字應為跑步總距離,非步行總距離。323Please respect copyright.PENANAG9svo1jJXW
323Please respect copyright.PENANAl7zG78K2yC
最終所得出的公式應為每1kg跑步1km就會消耗1卡路里,而非每1kg步行1km就會消耗1卡路里。323Please respect copyright.PENANAFgWLK8Jgnx
323Please respect copyright.PENANAovKMDmFpBQ
(圖2)之於公式為每1kg跑步1km就會消耗1卡路里,究竟是如何得出來的呢?323Please respect copyright.PENANA3o8FqWRVLB
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這是根據跑者真實實驗數據所得,跑速越快的話,能量消耗亦會越大,而且兩者的關係亦成直線相關趨勢。323Please respect copyright.PENANAHVN0JwFA6X
323Please respect copyright.PENANAT8HH7jdNxp
如果我們將Y-axis的單位同X-axis的單位相除,就可以推算出一個kcal/kg/km的常數(constant)。323Please respect copyright.PENANAcTubvR4lmD
323Please respect copyright.PENANAuLmprh2Ahn
(圖3)上一篇因錯誤用字的關係,做成了假設體重一樣,跑步1km與行路1km消耗的卡路里均會一樣的假象,這裡特別在這方面略微深入講解一下。323Please respect copyright.PENANA2MKDal2sRV
323Please respect copyright.PENANA2NrEfDYwPN
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每1kg每1km就會消耗1卡路里,只適用於跑步之上。323Please respect copyright.PENANADqLGRG4hJt
323Please respect copyright.PENANAnfscsCf6ZV
從左面的圖中得知,當步速高過10km/hr的時候,能量消耗與步速才會成直線相關趨勢,每1kg每1km就會消耗1卡路里才可套用。323Please respect copyright.PENANAA4BOHCgWQN
323Please respect copyright.PENANAdNZrRgAeg1
而步速低過10km/hr的時候,能量消耗與步速再也不成直線相關趨勢,每1kg每1km就會消耗1卡路里的定律亦唔能夠得以套用。323Please respect copyright.PENANAXbFgiHlAAb
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雖然香港人節奏急速,但以10km/hr的速度「行路」就應該不會太可行。323Please respect copyright.PENANAkuhFYAgQBk
323Please respect copyright.PENANAnMz5Dxvd3Z
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(圖3)究竟身體能夠提供得到幾多卡路里予運動上?323Please respect copyright.PENANAm0CRywT8rz
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如圖中所見,駭眼數字好足夠應付馬拉松的卡路里消耗,那麼為何這麼多人中途會無法支持下去呢?323Please respect copyright.PENANAQD5x1pxF6G
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好大部份的原因,均歸咎於名為HIT THE WALL的現象,下篇再續。323Please respect copyright.PENANAyiSc7NeQD8
323Please respect copyright.PENANADL8hIJodcM
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。323Please respect copyright.PENANACxOvDVV9p8
323Please respect copyright.PENANAMPvQVrj0aU
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/toc323Please respect copyright.PENANAoXnkNfFoYc
323Please respect copyright.PENANAF7d15gYpjc
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。323Please respect copyright.PENANAdh1yN7qoLE
323Please respect copyright.PENANA4Lh9FbY0rg
Link:323Please respect copyright.PENANAa9CCEsX1i7
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio323Please respect copyright.PENANALGn7UvLlnh
323Please respect copyright.PENANA9WV0Vosmkh
323Please respect copyright.PENANAidel4F8CMs
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。323Please respect copyright.PENANAyPz7kc844x
https://www.instagram.com/potatopigtongue/323Please respect copyright.PENANAvRoA1EidxJ
323Please respect copyright.PENANAjkWzy2zZfS
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367323Please respect copyright.PENANAMZ30iJ5IUe
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/323Please respect copyright.PENANA9WV6mmYF0o
Ref3:https://www.nature.com/articles/s42255-020-0251-4323Please respect copyright.PENANA7Cw3JVcYBN
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #85
深入淺出–點解瘦削運動員都能夠跑畢馬拉松全程?(2)
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