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。553Please respect copyright.PENANAJHzusmcPhi553Please respect copyright.PENANAPmKKoPUr9b
553Please respect copyright.PENANAaDsDjahWNM
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。553Please respect copyright.PENANAX3cl7rCDQs
553Please respect copyright.PENANAek4Wmovk0v
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。553Please respect copyright.PENANA3MqTbhkFUR
553Please respect copyright.PENANAzyB2q6Tpw7
(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?553Please respect copyright.PENANAvE3xD6bV4y553Please respect copyright.PENANAJTxVAFHy5D
553Please respect copyright.PENANAMkRWW7udyZ
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。553Please respect copyright.PENANAhvaiXr9y0N
553Please respect copyright.PENANAU9Y7MHx6G3
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)。553Please respect copyright.PENANA7H6YiviUAB
553Please respect copyright.PENANAmXOC6uC53v
(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。553Please respect copyright.PENANAKoRnPTc40c553Please respect copyright.PENANATpxj6wVbeA
553Please respect copyright.PENANAYLlwrFls0N
每1kg每1km就會消耗1卡路里,只適用於跑步之上。553Please respect copyright.PENANAYrNq3Lu82U
553Please respect copyright.PENANAWzgvWnFElQ
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。553Please respect copyright.PENANAv80oetOSV1
553Please respect copyright.PENANABqTmcab5t8
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。553Please respect copyright.PENANAZKkf6SPT4M
553Please respect copyright.PENANAjVCK8EbLrg
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。553Please respect copyright.PENANAIAMgwq6T99
553Please respect copyright.PENANAPwCexYNfGD
553Please respect copyright.PENANA7KvWJS6VdU
(圖3)究竟身體能夠提供得到幾多卡路里予運動上?553Please respect copyright.PENANAZZ2Gh13A2k553Please respect copyright.PENANAXiwF6Scbkn
553Please respect copyright.PENANAbMi9P60khg
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?553Please respect copyright.PENANAuOE8XdzlJG
553Please respect copyright.PENANAmp5D2fKF1c
好大部份的原因,均歸咎於名為HIT THE WALL的現象,下篇再續。553Please respect copyright.PENANAbgvcwdGCyS
553Please respect copyright.PENANApNDd10GM3h
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。553Please respect copyright.PENANAJoWLwFBjhi
553Please respect copyright.PENANABRzNFlFAcU
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/toc553Please respect copyright.PENANAyrRqavNSuP
553Please respect copyright.PENANAOkDuwr5EUn
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。553Please respect copyright.PENANAkWtVwfylZ8
553Please respect copyright.PENANAc9Sj0QbRJH
Link:553Please respect copyright.PENANAlYU6cYChj1
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio553Please respect copyright.PENANA5AtzIhhm07
553Please respect copyright.PENANAooLrUKdFD2
553Please respect copyright.PENANAFosD8jHZTb
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。553Please respect copyright.PENANAwuGwPRyPwN
https://www.instagram.com/potatopigtongue/553Please respect copyright.PENANA0HUvYsv6SN
553Please respect copyright.PENANAB2Z7VweFga
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367553Please respect copyright.PENANAi9i1sMmqn3
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/553Please respect copyright.PENANA0JwtVzR5c0
Ref3:https://www.nature.com/articles/s42255-020-0251-4553Please respect copyright.PENANAkhzHmvGp9D
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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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