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。329Please respect copyright.PENANAoeKvekhTIE
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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。329Please respect copyright.PENANAPnEepAgsmM
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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。329Please respect copyright.PENANAwWIB58dUuP
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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?329Please respect copyright.PENANA8kSQHOpBRz
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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。329Please respect copyright.PENANAv2hKJib1xi
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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)。329Please respect copyright.PENANA2JX3XTVQpx
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(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。329Please respect copyright.PENANASsRWYTULVs
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每1kg每1km就會消耗1卡路里,只適用於跑步之上。329Please respect copyright.PENANAMAA331rWkp
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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。329Please respect copyright.PENANAaebQKAcNSO
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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。329Please respect copyright.PENANAT7edrRpInL
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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。329Please respect copyright.PENANAS5UeHQ4kWc
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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?329Please respect copyright.PENANALo68VWHirL
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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?329Please respect copyright.PENANAN0YYxNA6j8
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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。329Please respect copyright.PENANAnWzR58b1mV
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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。329Please respect copyright.PENANApnCa6H67bO
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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/toc329Please respect copyright.PENANAOkH3bPOSYM
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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。329Please respect copyright.PENANAv4TpVnZtoc
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Link:329Please respect copyright.PENANASUIwgPsKeT
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。329Please respect copyright.PENANAnNNrRUas8g
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Ref1:https://journals.physiology.org/doi/abs/10.1152/jappl.1963.18.2.367329Please respect copyright.PENANAe0QsaPLLjg
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1859586/329Please respect copyright.PENANAtiDDUg4gYe
Ref3:https://www.nature.com/articles/s42255-020-0251-4329Please respect copyright.PENANA62UkM0xmsq