{"id":305,"date":"2016-01-03T22:07:25","date_gmt":"2016-01-03T21:07:25","guid":{"rendered":"https:\/\/acb-athletisme.fr\/?p=305"},"modified":"2016-04-30T18:54:48","modified_gmt":"2016-04-30T17:54:48","slug":"laspiration","status":"publish","type":"post","link":"https:\/\/acb-athletisme.fr\/?p=305","title":{"rendered":"L&rsquo;aspiration"},"content":{"rendered":"<p><a href=\"https:\/\/acb-athletisme.fr\/wp-content\/uploads\/2016\/01\/artfichier_330629_614558_201203073004553.jpg\" rel=\"attachment wp-att-306\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-306\" src=\"https:\/\/acb-athletisme.fr\/wp-content\/uploads\/2016\/01\/artfichier_330629_614558_201203073004553-300x200.jpg\" alt=\"artfichier_330629_614558_201203073004553\" width=\"485\" height=\"323\" srcset=\"https:\/\/acb-athletisme.fr\/wp-content\/uploads\/2016\/01\/artfichier_330629_614558_201203073004553-300x200.jpg 300w, https:\/\/acb-athletisme.fr\/wp-content\/uploads\/2016\/01\/artfichier_330629_614558_201203073004553-150x100.jpg 150w, https:\/\/acb-athletisme.fr\/wp-content\/uploads\/2016\/01\/artfichier_330629_614558_201203073004553.jpg 500w\" sizes=\"auto, (max-width: 485px) 100vw, 485px\" \/><\/a><em>Mondial d&rsquo;athl\u00e9tisme de Daegu &#8211; photo G.B.<\/em><\/p>\n<p style=\"text-align: justify;\">Tous les cyclistes savent bien qu\u2019on \u00e9conomise une pr\u00e9cieuse \u00e9nergie en \u00ab\u00a0su\u00e7ant la roue\u00a0\u00bb d\u2019un coll\u00e8gue devant soi.<\/p>\n<p style=\"text-align: justify;\">A 60 km\/h, l\u2019\u00e9conomie vaut environ 40%\u00a0! Pour celui qui est devant, le deal est moins int\u00e9ressant. Mais le cycliste qui \u00ab\u00a0tire l\u2019autre\u00a0\u00bb (dans le jargon du v\u00e9lo) r\u00e9duit l\u00e9g\u00e8rement sa train\u00e9e a\u00e9rodynamique et donc sa d\u00e9pense \u00e9nerg\u00e9tique de l\u2019ordre de 4%.<\/p>\n<p style=\"text-align: justify;\">Et en course \u00e0 pied\u00a0?<\/p>\n<p style=\"text-align: justify;\">Du fait des vitesses plus faibles, ce param\u00e8tre rev\u00eat moins d\u2019importance. A 17 km\/h, le surco\u00fbt de celui qui est devant est \u00e9valu\u00e9 \u00e0 2%. Puis grimpe exponentiellement. Le gain s\u2019\u00e9l\u00e8ve \u00e0 4% \u00e0 20 km\/h et m\u00eame 8% \u00e0 22 km\/h. A cette vitesse, la diff\u00e9rence repr\u00e9sente pr\u00e8s d\u2019une seconde par tour de piste. Le r\u00f4le du li\u00e8vre pour celui qui veut battre des records n\u2019est pas seulement de donner l\u2019allure et d\u2019apporter un soutien d\u2019ordre psychologique, il \u00e9pargne aussi au champion quelques watts de d\u00e9penses inutiles et donc lui permet de pr\u00e9server des forces pour les derni\u00e8res centaines de m\u00e8tres o\u00f9 il se retrouvera tout seul.<\/p>\n<p style=\"text-align: justify;\"><em>Zatopek N\u00b020 Nov-Dec 2011 p.17 par Gr\u00e9goire Millet et Gilles Goetghebuer<\/em><\/p>\n<p style=\"text-align: justify;\"><em>Un article particuli\u00e8rement destin\u00e9 \u00e0 Sylvain, notre Vil Coyote, particuli\u00e8rement v\u00e9loce, qui sur marathon se rapproche des 17km\/h et des 19 km\/h sur 10 000m. De l\u00e0 \u00e0 l&rsquo;inciter \u00e0 \u00ab\u00a0su\u00e7er la roue\u00a0\u00bb du concurrent devant soi, il y a une limite que je ne franchirai pas&#8230;<\/em><\/p>\n<p style=\"text-align: justify;\"><em>Laurent.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mondial d&rsquo;athl\u00e9tisme de Daegu &#8211; photo G.B. Tous les cyclistes savent bien qu\u2019on \u00e9conomise une pr\u00e9cieuse \u00e9nergie en \u00ab\u00a0su\u00e7ant la roue\u00a0\u00bb d\u2019un coll\u00e8gue devant soi. A 60 km\/h, l\u2019\u00e9conomie vaut environ 40%\u00a0! Pour celui qui est devant, le deal est moins int\u00e9ressant. Mais le cycliste qui \u00ab\u00a0tire l\u2019autre\u00a0\u00bb (dans le jargon du v\u00e9lo) r\u00e9duit l\u00e9g\u00e8rement &hellip; <a href=\"https:\/\/acb-athletisme.fr\/?p=305\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">L&rsquo;aspiration<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,25,51],"tags":[30,28,26,27],"class_list":["post-305","post","type-post","status-publish","format-standard","hentry","category-conseils","category-entrainement","category-technique","tag-conseils","tag-course","tag-entrainement","tag-technique"],"_links":{"self":[{"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/posts\/305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=305"}],"version-history":[{"count":1,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/posts\/305\/revisions"}],"predecessor-version":[{"id":307,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=\/wp\/v2\/posts\/305\/revisions\/307"}],"wp:attachment":[{"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/acb-athletisme.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}