{"id":800,"date":"2004-12-08T09:04:00","date_gmt":"2004-12-08T08:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/bone_loss\/"},"modified":"2026-10-08T00:32:24","modified_gmt":"2026-10-07T22:32:24","slug":"bone_loss","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/bone_loss\/","title":{"rendered":"Perte osseuse"},"content":{"rendered":"
\n

50% des femmes de plus de 60 ans ont des os fragiles. Au microscope, la partie centrale de l'os semble avoir \u00e9t\u00e9 grignot\u00e9e. Ceci entra\u00eene une forte augmentation des fractures de la hanche, du poignet ou de la colonne vert\u00e9brale. L'un des principaux facteurs de risque est la maladie et le manque d'exercices.<\/p>\n<\/div>\n

Le probl\u00e8me est similaire en impesanteur, o\u00f9 m\u00eame l'astronaute le plus jeune et en meilleure sant\u00e9 souffre de perte osseuse.<\/p>\n

La recherche spatiale aide les scientifiques \u00e0 comprendre ce qui se passe et \u00e0 trouver une mani\u00e8re de combattre le probl\u00e8me.<\/p>\n

Une m\u00e9thode est de demander \u00e0 des volontaires de rester alit\u00e9s pendant des semaines. Ces \u00e9tudes mettent en \u00e9vidence les modifications osseuses qui se produisent lorsque le squelette ne supporte aucun poids.<\/p>\n

L'ESA d\u00e9veloppe \u00e9galement de nouvelles machines d'exercices et du mat\u00e9riel m\u00e9dical \u00e0 utiliser sur Terre et dans l'espace.<\/p>\n

L'un des appareils test\u00e9s dans des vols en microgravit\u00e9 de l'ESA est une machine qui permet de monter ou descendre des marches. Une autre machine simule la marche et la course normales en testant les effets des vibrations sur le squelette.<\/p>","protected":false},"excerpt":{"rendered":"

50% of women over 60 years of age suffer from brittle bones. As seen through a microscope, the centre of the bone seems to be eaten away. This leads to […]<\/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\/2004\/04\/keeping_fit4\/17877404-2-eng-GB\/Keeping_fit.jpg","esa_banner_description":"Keeping fit","esa_banner_credit":"AP Photo\/Michel Euler","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/04\/Keeping_fit4","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-800","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/800","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=800"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/800\/revisions"}],"predecessor-version":[{"id":1943,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/800\/revisions\/1943"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=800"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=800"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=800"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=800"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=800"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=800"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=800"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}