{"id":2625,"date":"2022-07-27T07:15:08","date_gmt":"2022-07-27T07:15:08","guid":{"rendered":"https:\/\/www.welovecycling.com\/dk\/?p=2625"},"modified":"2022-07-27T07:42:53","modified_gmt":"2022-07-27T07:42:53","slug":"jumbo-visma-nutrition-under-touren-ketoner","status":"publish","type":"post","link":"https:\/\/www.welovecycling.com\/dk\/professionel-cykling\/jumbo-visma-nutrition-under-touren-ketoner\/","title":{"rendered":"Ern\u00e6ring: S\u00e5dan anvender Jumbo-Visma ketoner"},"content":{"rendered":"

Team Jumbo-Visma flyttede gr\u00e6nserne for ern\u00e6ring under Touren, og det er ketoner et fremragende eksempel p\u00e5. Hvad er ketoner, og hvilken rolle spiller de i holdets ern\u00e6ringsstrategi?<\/strong><\/p>\n

<\/p>\n

Ketontilskuddenes rolle<\/strong><\/h2>\n

Ketoner anvendes som energikilde i din krop, n\u00e5r der ikke er glukose til r\u00e5dighed. Din krop producerer ketoner naturligt, n\u00e5r du faster, indtager en di\u00e6t med f\u00e5 kulhydrater eller cykler en meget lang tur. Ketoner kan ogs\u00e5 indtages i form af kosttilskud. P\u00e5 samme m\u00e5de som med en energidrik fyldt med sukkerglukose s\u00e5 vil nogle af rytterne ved Tour de France indtage drikke fyldt med ketoner.<\/p>\n

Unders\u00f8gelser har vist, at ketontilskud \u00f8ger ketonniveauet i blodet p\u00e5 en p\u00e5lidelig m\u00e5de. Det kan anvendes under tr\u00e6ning for at \u00f8ge indtagelsen. Ketontilskud, som indtages sammen med kulhydrater, kan ogs\u00e5 \u00f8ge restitutionen ved at forbedre resyntesen af glykogen, hvilket er ekstra vigtigt under Touren. Der er nogen, som p\u00e5st\u00e5r, at tilskud af ketoner endda kan forbedre udholdenhedspr\u00e6stationen, men forskningen underst\u00f8tter det ikke i \u00f8jeblikket.<\/p>\n

\"Jonas<\/a>
Vingegaard og Wout Van Aert venter p\u00e5, at 15. etape af Touren 2022 skal starte. \u00a9 Profimedia<\/figcaption><\/figure>\n

Jumbo-Visma blandt de f\u00f8rste til at anvende ketoner<\/strong><\/h2>\n

I 2018 begyndte der at florere rygter om, at nogle af holdene ved Tour de France m\u00e5ske anvendte ketoner som en del af deres ern\u00e6ring. Team Jumbo-Visma var blandt de f\u00f8rste til at bekr\u00e6fte, at ketoner er en del af deres strategi. Og det ser ud til, at holdet er blevet ved med at bruge dem. Ved en pressekonference under Tour de France i 2020 bekr\u00e6ftede Primo\u017e Rogli\u010d det, men han var ikke rigtigt overbevist om effekterne: \u201dJa, vi anvender dem stadigv\u00e6k. Det er sv\u00e6rt at sige noget om den reelle effekt. Det er sv\u00e6rt at m\u00e6rke det.\u201d<\/p>\n

Hvorfor anvender de ketoner?<\/strong><\/h2>\n

Asker Jeukendrup, som er ansvarlig for ern\u00e6ringen hos Team Jumbo-Visma, bekr\u00e6ftede, at brugen af ketoner er baseret p\u00e5 en positiv tankegang, men at forskningen ikke findes endnu.<\/p>\n

\u201dAnvendelsen af ketoner er stadig et eksperiment. Der findes kun nogle f\u00e5 unders\u00f8gelser. Det er samme rationale, som jeg eksperimenterede med i forbindelse med min ph.d. for 25 \u00e5r siden, dog med mellemk\u00e6dede triglycerider (MCT). De omdannes delvis til ketonlegemer. Vi demonstrerede, at MCT’er blev opbrugt hurtigt, og at de kunne v\u00e6re et godt alternativt br\u00e6ndstof. Men det giver ingen mening s\u00e5 meget som at t\u00e6nke p\u00e5 ekstra br\u00e6ndstof, hvis du ikke p\u00e5 forh\u00e5nd har en perfekt plan for indtagelsen.\u201d<\/p>\n

Og det er pr\u00e6cist det, som Team Jumbo-Visma lagde. De tog deres fremragende grundl\u00e6ggende ern\u00e6ringsplan og tilf\u00f8rte ketoner som supplement dertil.<\/p>\n

Jagten p\u00e5 marginale gevinster<\/strong><\/h2>\n

Grischa Niermann, som er sportsdirekt\u00f8r hos Team Jumbo-Visma, sagde, at ketontilskud kun er en lille del af holdets komplekse puslespil omkring pr\u00e6stationerne og ikke nogen mirakelpille, som mange h\u00e5bede p\u00e5, at det ville v\u00e6re.<\/p>\n

\u201dJeg tror, at mange mennesker tror, at ketoner er et vidundermiddel, som g\u00f8r dig 20 % hurtigere. Og jeg mener, at det er totalt bullsh*t. Hvis man bruger det, s\u00e5 tror man p\u00e5, at det har en form for effekt, men jeg er 100 % overbevist om, at det ikke er det vidundertilskud, som g\u00f8r dig langt, langt hurtigere.<\/p>\n

Team Jumbo-Visma centrerer ern\u00e6ringen omkring deres Foodcoach-app, som drives via maskinl\u00e6ring. Det sikrer, at deres rytteres basisbehov altid er d\u00e6kket. De var med helt fremme med anvendelsen af glukoseoverv\u00e5gningsapparater og lanceringen af ketoner. De er p\u00e5 jagt efter marginale gevinster, hvilket er en kurs, som Team Sky valgte som de f\u00f8rste.<\/p>\n

\u201dDen strategi omfatter en lang r\u00e6kke andre ting, is\u00e6r vores Foodcoach-app, hvor vi virkelig m\u00e5ler og beregner alt det, som rytterne indtager p\u00e5 daglig basis, alt det, de forbr\u00e6nder, og det, som de skal spise. Ketoner er en af brikkerne til puslespillet i hele restitutionsplanen. For nogle giver ketoner noget i forbindelse med restitutionen, for andre ryttere ikke s\u00e5 meget. Man skal l\u00e6gge hele puslespillet korrekt for at skabe en fordel,\u201d forklarede Niermann.<\/p>\n","protected":false},"excerpt":{"rendered":"

Team Jumbo-Visma flyttede gr\u00e6nserne for ern\u00e6ring under Touren, og det er ketoner et fremragende eksempel p\u00e5. Hvad er ketoner, og […]<\/p>\n","protected":false},"author":126,"featured_media":2630,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,15],"tags":[],"global-categories":[],"class_list":["post-2625","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-professionel-cykling","category-tour-de-france"],"yoast_head":"\nJumbo-Visma og ketoner: Bruger rytterne ketonetilskud?<\/title>\n<meta name=\"description\" content=\"Jumbo-Visma flytter gr\u00e6nserne for ern\u00e6ring under Touren. 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