{"id":697,"date":"2012-12-14T09:29:00","date_gmt":"2012-12-14T08:29:00","guid":{"rendered":"https:\/\/kids.esa.int\/staying_in_bed_for_science\/"},"modified":"2026-10-08T00:31:15","modified_gmt":"2026-10-07T22:31:15","slug":"staying_in_bed_for_science","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/staying_in_bed_for_science\/","title":{"rendered":"Rester au lit pour la science"},"content":{"rendered":"
\n

Savez-vous ce qui vous arrivera si vous restez allong\u00e9 dans un lit inclin\u00e9, la t\u00eate en bas, pendant plusieurs semaines ? Votre corps subira des changements et vieillira pr\u00e9matur\u00e9ment... comme si vous viviez dans l\u2019espace !<\/p>\n<\/div>\n

Douze personnes participent actuellement \u00e0 un nouveau programme d'\u00e9tude de l'ESA. Ces derni\u00e8res vont rester allong\u00e9es pendant 21 jours, la t\u00eate inclin\u00e9e 6 degr\u00e9s plus bas que le reste de leur corps. Pendant toute la dur\u00e9e de l\u2019\u00e9tude, leurs hanches et au moins une \u00e9paule devront - \u00e0 tout moment - se trouver en contact avec le lit, m\u00eame lorsqu'ils mangent, se lavent ou font leurs besoins.<\/p>\n

Le personnel m\u00e9dical va continuer de surveiller attentivement les participants alors que leurs muscles s\u2019affaiblissent. L\u2019un des participants a d\u00e9j\u00e0 perdu quasiment quatre kilos. Pour les chercheurs dirigeant cette \u00e9tude, l\u2019objectif consiste \u00e0 d\u00e9terminer si l\u2019exercice physique et\/ou les compl\u00e9ments prot\u00e9in\u00e9s peuvent am\u00e9liorer la sant\u00e9 physique des volontaires. \u00c0 moyen terme, cela devrait permettre d\u2019optimiser le suivi physique des astronautes en mission dans l'espace.<\/p>\n

\"Bedrest
Collation pour le repos au lit<\/figcaption><\/figure>\n

Pour cette \u00e9tude, les b\u00e9n\u00e9voles ont \u00e9t\u00e9 s\u00e9par\u00e9s en trois groupes. Les deux premiers groupes suivent un court et intense exercice de routine en exer\u00e7ant les muscles de leurs jambes sur un syst\u00e8me de plaque vibrante. L\u2019exercice de routine est r\u00e9p\u00e9t\u00e9 tous les trois jours. Les membres d\u2019un de ces deux groupes prennent \u00e9galement des compl\u00e9ments prot\u00e9in\u00e9s, \u00e0 la mani\u00e8re des culturistes, afin de renforcer leur d\u00e9veloppement musculaire.<\/p>\n

Le troisi\u00e8me et dernier groupe ne suit aucun exercice physique et ne prend aucun compl\u00e9ment prot\u00e9in\u00e9. Ce troisi\u00e8me groupe sert de \u00ab groupe de contr\u00f4le \u00bb et permet de comparer les r\u00e9sultats de l\u2019ensemble des groupes.<\/p>\n

La sant\u00e9 physique des volontaires est contr\u00f4l\u00e9e par des scanographies, des tests sanguins et des biopsies musculaires. Les participants attendent impatiemment la fin d\u2019ann\u00e9e, qui les verra quitter leurs lits pour suivre quatre mois de r\u00e9\u00e9ducation. Ils suivront ensuite deux autres phases de 21 jours, en rejoignant \u00e0 chaque fois un nouveau groupe de test.<\/p>","protected":false},"excerpt":{"rendered":"

Do you know what happens to your body if you stay in a tilted bed for weeks with your head at the lower end? Your body starts to change as […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/12\/bedrest_resistive_vibration_exercise_machine2\/17899792-2-eng-GB\/Bedrest_resistive_vibration_exercise_machine.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/12\/Bedrest_resistive_vibration_exercise_machine2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,13,63],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-697","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=697"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/697\/revisions"}],"predecessor-version":[{"id":4632,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/697\/revisions\/4632"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=697"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=697"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=697"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=697"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=697"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=697"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=697"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}