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。331Please respect copyright.PENANApJCjm49qr4
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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。331Please respect copyright.PENANAPU5RgJH6FD
331Please respect copyright.PENANAMpohahwbLP
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。331Please respect copyright.PENANAkyROLzy5ci
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(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?331Please respect copyright.PENANAzlCWqSIb1k
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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。331Please respect copyright.PENANAKaUBSiKtA8
331Please respect copyright.PENANAcqr9jCKj8H
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)。331Please respect copyright.PENANAUyvcEuJh1L
331Please respect copyright.PENANAn5MfGgHn7m
(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。331Please respect copyright.PENANAPJudQL59py
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每1kg每1km就會消耗1卡路里,只適用於跑步之上。331Please respect copyright.PENANASSlySGqtDf
331Please respect copyright.PENANAFEwXNDFvrG
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。331Please respect copyright.PENANAQe9AlMR7sF
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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。331Please respect copyright.PENANALVDiqwSlN1
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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。331Please respect copyright.PENANA9nUQjlzFP4
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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?331Please respect copyright.PENANAvLJhmb9gFg
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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?331Please respect copyright.PENANAc6ucSLw6b6
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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。331Please respect copyright.PENANAk1MYgeuBKe
331Please respect copyright.PENANASfucjuTCdc
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。331Please respect copyright.PENANAAWMVAqDCoT
331Please respect copyright.PENANARFeAXCst25
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/toc331Please respect copyright.PENANAqJGI6jciUc
331Please respect copyright.PENANA5yru94MwKB
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。331Please respect copyright.PENANA7hYGiLAsYk
331Please respect copyright.PENANAN1G5aytbpy
Link:331Please respect copyright.PENANAqN5HUamA1u
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio331Please respect copyright.PENANAzkFtKLlN6O
331Please respect copyright.PENANAq5yDNsWK06
331Please respect copyright.PENANA1NMKt7pYoe
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。331Please respect copyright.PENANAdDDd7IXtI5
https://www.instagram.com/potatopigtongue/331Please respect copyright.PENANAo2J1ZSZj95
331Please respect copyright.PENANAzweiMD6Xnq
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367331Please respect copyright.PENANAHIi1Ltwz07
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/331Please respect copyright.PENANAZCCbiYIz6C
Ref3:https://www.nature.com/articles/s42255-020-0251-4331Please respect copyright.PENANAyfsV4pZZTR
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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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