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。328Please respect copyright.PENANAKbEhOGlAmZ
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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。328Please respect copyright.PENANAiTfsQOo7dD
328Please respect copyright.PENANAZP5To2rJT5
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。328Please respect copyright.PENANAp9Wx7Z9fSp
328Please respect copyright.PENANAtpboNwDlSs
(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?328Please respect copyright.PENANAQb5uiKd8zw
328Please respect copyright.PENANAo4OlXOOEZi
328Please respect copyright.PENANAEx900Malu4
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。328Please respect copyright.PENANAkUSy9ShYez
328Please respect copyright.PENANAiqA9IpLOIY
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)。328Please respect copyright.PENANAKiubxoRHsc
328Please respect copyright.PENANAP15EgCQJbS
(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。328Please respect copyright.PENANAqD4Q3S75z8
328Please respect copyright.PENANAgTGPVcmj88
328Please respect copyright.PENANAMJXMe6cJKO
每1kg每1km就會消耗1卡路里,只適用於跑步之上。328Please respect copyright.PENANA9zbqkmDUgw
328Please respect copyright.PENANAnsm97O9v5m
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。328Please respect copyright.PENANA6hYfsyKIVG
328Please respect copyright.PENANANzOw3FvDAd
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。328Please respect copyright.PENANA3qTNclJkZZ
328Please respect copyright.PENANAb6AQ2gXOx5
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。328Please respect copyright.PENANAZxGJ5gOGLG
328Please respect copyright.PENANAt8TwliiD4E
328Please respect copyright.PENANASdMuV2K3Fu
(圖3)究竟身體能夠提供得到幾多卡路里予運動上?328Please respect copyright.PENANA0O8GdRGsO6
328Please respect copyright.PENANAk3gyNV1SNa
328Please respect copyright.PENANADwoEKq4icX
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?328Please respect copyright.PENANAbb479jNBQ9
328Please respect copyright.PENANALgIDfhebT8
好大部份的原因,均歸咎於名為HIT THE WALL的現象,下篇再續。328Please respect copyright.PENANAZzS8vv4Npc
328Please respect copyright.PENANAEmlGGywipo
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。328Please respect copyright.PENANAqricLm5YSD
328Please respect copyright.PENANA29urkNRjUl
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/toc328Please respect copyright.PENANAw6U7iuTJ1y
328Please respect copyright.PENANA4rWsGAcHue
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。328Please respect copyright.PENANAJKuxCK132v
328Please respect copyright.PENANA30t5pZtKJQ
Link:328Please respect copyright.PENANAL4avO2mRAb
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio328Please respect copyright.PENANAsORLNve15b
328Please respect copyright.PENANAALxYXcmL11
328Please respect copyright.PENANA6fjm95GKMa
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。328Please respect copyright.PENANAcJXaMK1AWP
https://www.instagram.com/potatopigtongue/328Please respect copyright.PENANAaRY9uhfGuX
328Please respect copyright.PENANAMaVlYVJ6Lj
Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367328Please respect copyright.PENANAHXe7sXIHrH
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/328Please respect copyright.PENANApr77GkX9Cm
Ref3:https://www.nature.com/articles/s42255-020-0251-4328Please respect copyright.PENANAGAbkBPJvwP
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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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