{"id":26566,"date":"2012-11-10T17:00:11","date_gmt":"2012-11-10T16:00:11","guid":{"rendered":"http:\/\/www.wanarun.net\/blog\/?p=26566"},"modified":"2019-10-29T18:20:16","modified_gmt":"2019-10-29T17:20:16","slug":"et-si-une-semelle-plus-epaisse-nous-faisait-courir-plus-vite","status":"publish","type":"post","link":"https:\/\/www.wanarun.net\/blog\/et-si-une-semelle-plus-epaisse-nous-faisait-courir-plus-vite-26566.html","title":{"rendered":"Et si une semelle plus \u00e9paisse nous faisait courir plus vite ?"},"content":{"rendered":"

En \"\"<\/a>courant avec une paire d’Hoka, je me suis pos\u00e9 la question : Et si finalement je courais plus vite avec ces chaussures uniquement parce que la semelle est plus \u00e9paisse ? Alors apr\u00e8s quelques minutes de r\u00e9fl\u00e9xion et quelques hypoth\u00e8ses plus tard, je suis capable de vous donner la formule qui va vous permettre de calculer le gain (th\u00e9orique) de ce changement de chaussures… ou courir plus vite juste en changeant de chaussures…<\/p>\n

Mod\u00e9lisation basique du coureur<\/h2>\n

J’avoue j’ai simplifi\u00e9 au maximum l’\u00eatre humain, l’homme sera repr\u00e9sent\u00e9 par 2 jambes droites de longueur L<\/strong>. il a actuellement une foul\u00e9e de longueur F<\/strong>. Il vient de changer de chaussures pour passer sur un mod\u00e8le Hoka avec une semelle plus \u00e9paisse S<\/strong>.
\nJe sens que le simple fait de vous parler de trigonom\u00e9trie va vous rapeller des mauvais souvenirs de vos jeunes ann\u00e9es mais c’est pourtant une simple histoire de sinus. je vais vous \u00e9pargner les d\u00e9tails du calcul (que j’esp\u00e8re ne pas avoir rat\u00e9).<\/p>\n

\"\"<\/p>\n

 <\/p>\n

Au final, le gain par foul\u00e9e est \u00e9gale \u00e0 S\/L*F<\/strong><\/p>\n

Courir plus vite oui mais pour quel gain ?<\/h2>\n

Prenons un exemple simple : je cours avec des chaussures classiques \u00e0 10 km\/h soit 6 min\/km et je fais 72 foul\u00e9es par minute. Cela me donne des foul\u00e9es d’environ 115 cm.<\/p>\n

j’ai des jambes de 92 cm et j’ai des semelles qui font 1 cm de plus.<\/p>\n

mes foul\u00e9es vont faire 116,25 cm (j’esp\u00e8re que vous suivez toujours)<\/p>\n

sur un marathon, avant je devais faire 36 691 foul\u00e9es… mais maintenant j’en ferai 36296 soit 395 foul\u00e9es de moins.<\/p>\n

Je viens donc de gagner 329 secondes sur un marathon que j’aurai du faire en 4h13, je vais pouvoir le faire en 4h07 environ.<\/p>\n

Voil\u00e0 comment vous allez pouvoir gagner 5 minutes sur un marathon juste en changeant de chaussures….<\/p>\n

Bien sur ces calculs se basent sur des hypoth\u00e8ses surement un peu limite et le corps humain est beaucoup plus complexe que 2 simples bouts de bois !<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"\"\"<\/a>

En courant avec une paire d’Hoka, je me suis pos\u00e9 la question : Et si finalement je courais plus vite avec ces chaussures uniquement parce que la semelle est plus \u00e9paisse ? Alors apr\u00e8s quelques minutes de r\u00e9fl\u00e9xion et quelques hypoth\u00e8ses plus tard, je suis capable de vous donner la formule qui va vous permettre […]<\/p>\n","protected":false},"author":1,"featured_media":26567,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12501,12502,9],"tags":[],"yoast_head":"\nEt si une semelle plus \u00e9paisse nous faisait courir plus vite ?<\/title>\n<meta name=\"description\" content=\"En courant avec une paire d'Hoka, je me suis pos\u00e9 la question : Et si finalement je courais plus vite avec ces chaussures uniquement parce que la semelle\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wanarun.net\/blog\/et-si-une-semelle-plus-epaisse-nous-faisait-courir-plus-vite-26566.html\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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