{"id":1360,"date":"2024-01-13T21:56:53","date_gmt":"2024-01-13T20:56:53","guid":{"rendered":"https:\/\/evo2.lu\/?page_id=1360"},"modified":"2024-01-13T22:24:46","modified_gmt":"2024-01-13T21:24:46","slug":"test-vo2-ou-test-lactate","status":"publish","type":"page","link":"https:\/\/evo2.lu\/?page_id=1360","title":{"rendered":"Test VO2 ou test lactate?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1360\" class=\"elementor elementor-1360\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7f8ff3de elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7f8ff3de\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-42160a71\" data-id=\"42160a71\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-13b5095e elementor-widget elementor-widget-text-editor\" data-id=\"13b5095e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Voici un autre sujet de discussion qui revient tr\u00e8s souvent avec les sportifs qui font appel \u00e0 mes services. Il est en effet beaucoup plus courant de trouver des professionnels proposant des tests avec mesure des lactates sanguins.<\/p><p>Tout simplement car les tests lactate pr\u00e9sentent deux \u00e9normes avantages :<br \/>&#8211; la plupart des appareils sur le march\u00e9 se trouvent pour moins de 500\u20ac<br \/>&#8211; leur taille compacte les rend transportables dans une poche<br \/>L\u00e0-dessus, le test VO2 ne peut pas rivaliser : l&#8217;analyseur de gaz en lui-m\u00eame co\u00fbte plus de 25000\u20ac, sans parler des p\u00e9riph\u00e9riques, consommables, syst\u00e8me informatique d\u00e9di\u00e9 etc.<br \/>Par la m\u00eame occasion, difficile d&#8217;apporter son laboratoire VO2 partout, car m\u00eame si tout cela est transportable, il faut une alimentation \u00e9lectrique et des conditions stables (aussi bien pour la pr\u00e9cision des mesures que la s\u00e9curit\u00e9 du mat\u00e9riel &#8211; on ne peut pas s&#8217;installer sous une tente au milieu d&#8217;un champ !)<\/p><p><b>Test Lactate : 2 &#8211; Test VO2 : 0<\/b><\/p><p>Mais attendez la suite&#8230;<\/p><p>Pour la r\u00e9alisation d&#8217;un test lactate, il faut r\u00e9aliser des pr\u00e9l\u00e8vements sanguins. Sans parler des notions d&#8217;hygi\u00e8ne, cela entraine de grandes limites :<\/p><p>&#8211; la sueur perturbe la qualit\u00e9 des r\u00e9sultats, il faut \u00eatre extr\u00eamement scrupuleux sur la proc\u00e9dure de pr\u00e9l\u00e8vement car le risque d&#8217;erreur est \u00e9lev\u00e9. Au niveau du test VO2, l&#8217;\u00e9chantillonnage des volumes respiratoires et des gaz expir\u00e9s se fait de mani\u00e8re parfaitement contr\u00f4l\u00e9e par un masque \u00e9tanche.<\/p><p><b>Lactate : 2 &#8211; VO2 : 1<\/b><\/p><p>&#8211; le nettoyage du site de pr\u00e9l\u00e8vement, sa r\u00e9alisation, l&#8217;interpr\u00e9tation par la lecteur, tout cela demande du temps. En pratique, il est difficile de r\u00e9aliser de fa\u00e7on qualitative plus d&#8217;un pr\u00e9l\u00e8vement par minute. En face, l&#8217;\u00e9chantillonnage constant de l&#8217;analyseur de gaz enregistre les valeurs toutes les 3 secondes. C&#8217;est au final au moins 20 fois plus de donn\u00e9es r\u00e9cup\u00e9r\u00e9es lors d&#8217;un test. Et je ne parle m\u00eame pas des acrobaties n\u00e9cessaires pour r\u00e9aliser un test lactate sur un tapis de course (\u00e0 moins de faire des pauses \u00e0 la fin de chaque palier pour s\u00e9curiser le pr\u00e9l\u00e8vement, mais on remplace un probl\u00e8me par un autre).<\/p><p><b>Lactate : 2 &#8211; VO2 : 2<\/b><\/p><p>&#8211; la pr\u00e9cision des machines est d\u00e9terminante, vous imaginez ais\u00e9ment qu&#8217;un lecteur de poche \u00e0 300\u20ac n&#8217;a pas les m\u00eames pr\u00e9tentions ni les m\u00eames marges d&#8217;erreur qu&#8217;une machine de certification m\u00e9dicale 100 fois plus on\u00e9reuse, utilis\u00e9e par des nombreuses universit\u00e9s et h\u00f4pitaux \u00e0 travers le monde, et m\u00eame dans l&#8217;espace par la NASA !<\/p><p><b>Lactate : 2 &#8211; VO2 : 3<\/b><\/p><p>&#8211; la mesure des lactates est extr\u00eamement sensible \u00e0 de nombreux facteurs tels que la fatigue, le stress, l&#8217;heure de la journ\u00e9e, l&#8217;alimentation, la consommation de caf\u00e9ine, etc. Dans ce contexte, il est assez difficile d&#8217;\u00eatre reproductible, \u00e0 moins d&#8217;\u00eatre une fois encore extr\u00eamement scrupuleux sur le contexte du test et de bien prendre note de toutes ces conditions. La capacit\u00e9 VO2 peut bien s\u00fbr d\u00e9pendre de la fatigue (on demande 48h sans entrainement intensif avant le test), mais elle r\u00e9sulte d&#8217;adaptations beaucoup plus complexes et profondes, il n&#8217;y a pas de variation d&#8217;un jour \u00e0 l&#8217;autre parce qu&#8217;on a consomm\u00e9 3 tasses de caf\u00e9 au lieu de 2.<\/p><p><b>Lactate : 2 &#8211; VO2 : 4<\/b><\/p><p>&#8211; et puis, que mesure-t-on?<br \/>La mesure des lactates permet de mesurer&#8230;les lactates! Produits par les cellules musculaires lors de l&#8217;effort, ces lactates sont sujets \u00e0 de nombreuses transformations, transferts etc. Il est \u00e9galement r\u00e9utilis\u00e9 comme source d&#8217;\u00e9nergie pendant l&#8217;effort, toute cette biochimie est complexe, variable d&#8217;une personne \u00e0 l&#8217;autre, et surtout, non mesurable. Avec l&#8217;analyseur d&#8217;\u00e9changes gazeux, on enregistre de mani\u00e8re simultan\u00e9e : les volumes respiratoires et la fr\u00e9quence respiratoire (donc la ventilation), la fr\u00e9quence cardiaque, l&#8217;oxyg\u00e8ne consomm\u00e9, et le CO2 expir\u00e9. L&#8217;analyse isol\u00e9e et combin\u00e9e de tous ces param\u00e8tres permettent d&#8217;avoir une vue d&#8217;ensemble compl\u00e8te de l&#8217;adaptation d&#8217;une personne \u00e0 l&#8217;effort, sur le plan cardio-respiratoire et m\u00e9tabolique. Les lactates par exemple, vont entre autres \u00eatre m\u00e9tabolis\u00e9s et donner lieu \u00e0 la lib\u00e9ration d&#8217;ions H+ acides, neutralis\u00e9s par le bicarbonates sanguins HCO3-, ce qui va donner de l&#8217;eau et du CO2, CO2 d\u00e9tect\u00e9 et pr\u00e9cis\u00e9ment mesur\u00e9 par l&#8217;analyseur d&#8217;\u00e9changes gazeux&#8230;<br \/>C&#8217;est donc le jour et la nuit : avec le test lactate on regarde par le trou de la serrure, quand avec le test VO2 on ouvre la porte en grand.<br \/>Avec ce test VO2, vous n&#8217;obtenez pas ces 2 seuils lactiques &#8220;approximatifs&#8221;, mais 2 seuils ventilatoires extr\u00eamement pr\u00e9cis, le seuil d&#8217;adaptation ventilatoire SV1 et le seuil d&#8217;inadaptation ventilatoire SV2, plus la VO2max et ses param\u00e8tres associ\u00e9es (VMA\/PMA, zones d&#8217;entrainements en allure\/puissance\/FC, etc.)<\/p><p><b>Lactate : 2 &#8211; VO2 : 5 (au moins!)<\/b><\/p><p>Alors, pour r\u00e9sumer, dans quelles situations faut-il privil\u00e9gier un test lactate \u00e0 un test VO2?<br \/>C&#8217;est tr\u00e8s simple, 2 situations :<br \/>1) pour les sports explosifs qui ne sont pas des sports d&#8217;endurance (je pense \u00e0 certaines disciplines d&#8217;athl\u00e9tisme sur piste)<br \/>2) quand un test VO2 n&#8217;est pas disponible \ud83d\ude42<\/p><p>Alors oui, j&#8217;ai quand m\u00eame un lecteur de lactates dans mon bureau&#8230; et il a toute sa place pour les tests de puissance ana\u00e9robie! \ud83d\ude09<\/p><p>Si vous h\u00e9sitez encore, amis coureurs, ach\u00e8teriez-vous pour courir en 2024 des sabots en bois? Amis cyclistes, ach\u00e8teriez-vous pour rouler en 2024 un v\u00e9lo en acier, roues de 26&#8243; et freins Cantilever?<\/p><p>Ne perdez plus de temps \u00e0 vous entrainer approximativement et offrez-vous ce qui se fait de mieux!<\/p><p>A bient\u00f4t chez\u00a0<a href=\"http:\/\/www.evo2.lu\" target=\"_blank\" rel=\"noopener\">eVO2<\/a>\u00a0\ud83d\ude09<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08df54a elementor-arrows-position-inside elementor-pagination-position-outside elementor-widget elementor-widget-image-carousel\" data-id=\"08df54a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;navigation&quot;:&quot;both&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500}\" 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Il est en effet beaucoup plus courant de trouver des professionnels proposant des tests avec mesure des lactates sanguins. Tout simplement car les tests lactate pr\u00e9sentent deux \u00e9normes avantages :&#8211; la plupart des appareils sur le&hellip;<\/p>\n","protected":false},"author":1,"featured_media":12,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1360","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Test VO2 ou test lactate? - eVO2 Runners &amp; Cyclists Clinic<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/evo2.lu\/?page_id=1360\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Test VO2 ou test lactate? - eVO2 Runners &amp; Cyclists Clinic\" \/>\n<meta property=\"og:description\" content=\"Voici un autre sujet de discussion qui revient tr\u00e8s souvent avec les sportifs qui font appel \u00e0 mes services. Il est en effet beaucoup plus courant de trouver des professionnels proposant des tests avec mesure des lactates sanguins. 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