{"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\/fi\/bone_loss\/","title":{"rendered":"Luun menetys"},"content":{"rendered":"
\n

50% yli 60-vuotiaista naisista k\u00e4rsii luiden haurastumisesta. Mikroskoopilla tarkasteltuna luun keskiosa n\u00e4ytt\u00e4\u00e4 olevan sy\u00f6pynyt pois. T\u00e4m\u00e4 johtaa lonkka-, ranne- tai selk\u00e4rangan murtumien merkitt\u00e4v\u00e4\u00e4n lis\u00e4\u00e4ntymiseen. Ongelma johtuu suurelta osin sairauksista ja liikunnan puutteesta.<\/p>\n<\/div>\n

Samanlainen ongelma ilmenee my\u00f6s avaruuden painottomuudessa, jolloin jopa nuorimmat ja kuntoisimmat astronautit k\u00e4rsiv\u00e4t jonkin verran luumassan v\u00e4henemisest\u00e4.<\/p>\n

Avaruustutkimus auttaa tutkijoita ymm\u00e4rt\u00e4m\u00e4\u00e4n, mit\u00e4 tapahtuu, ja l\u00f6yt\u00e4m\u00e4\u00e4n keinon torjua ongelmaa.<\/p>\n

Yksi menetelm\u00e4 on k\u00e4ytt\u00e4\u00e4 vapaaehtoisia, jotka viett\u00e4v\u00e4t useita viikkoja s\u00e4ngyss\u00e4. N\u00e4m\u00e4 lepotutkimukset osoittavat, miten luut muuttuvat, kun niihin ei kohdistu painoa.<\/p>\n

ESA kehitt\u00e4\u00e4 my\u00f6s uusia kuntoilulaitteita ja l\u00e4\u00e4ketieteellisi\u00e4 laitteita k\u00e4ytett\u00e4v\u00e4ksi sek\u00e4 maassa ett\u00e4 avaruudessa.<\/p>\n

Yksi ESA:n mikropainovoimalentojen aikana testattu laite on laite, johon astutaan ja josta astutaan pois. Toinen laite j\u00e4ljittelee normaalia k\u00e4vely\u00e4 ja juoksua testaamalla t\u00e4rin\u00e4n vaikutuksia luihin.<\/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\/fi\/wp-json\/wp\/v2\/posts\/800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=800"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/800\/revisions"}],"predecessor-version":[{"id":1943,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/800\/revisions\/1943"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=800"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=800"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=800"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=800"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=800"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=800"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=800"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}