{"id":18936,"date":"2022-10-08T12:00:11","date_gmt":"2022-10-08T10:00:11","guid":{"rendered":"https:\/\/www.welovecycling.com\/cs\/?p=18936"},"modified":"2022-10-06T11:02:10","modified_gmt":"2022-10-06T09:02:10","slug":"kdo-doopravdy-vynalezl-jizdu-v-haku","status":"publish","type":"post","link":"https:\/\/www.welovecycling.com\/cs\/2022\/10\/08\/kdo-doopravdy-vynalezl-jizdu-v-haku\/","title":{"rendered":"Kdo doopravdy vynalezl j\u00edzdu v h\u00e1ku?"},"content":{"rendered":"<p><strong>Zn\u00e1te ty zpr\u00e1vy typu \u201eameri\u010dt\u00ed v\u011bdci zjistili, \u017ee&#8230;\u201c? I v tomto p\u0159\u00edpad\u011b p\u016fjde o chytr\u00e9 hlavy zpoza Atlantiku, kter\u00e9 ale tentokr\u00e1t neobjevily Ameriku. Jen na z\u00e1klad\u011b pozorov\u00e1n\u00ed do\u0161ly k tomu, \u017ee pohyb v h\u00e1ku tak typick\u00fd pro cyklistiku tu byl d\u00e1vno p\u0159ed objevem kola. A cyklistickou terminologii pou\u017eily ve sv\u00e9m v\u011bdeck\u00e9m \u010dl\u00e1nku.<\/strong><\/p>\n<p>A o co \u017ee jde? O&#8230; ehm&#8230; spermie. V\u011bdci z North Carolina Agricultural &amp; Technical State University popsali, \u017ee tihle mal\u00ed plavci adoptovali z\u00e1konitosti pelotonu pro pohyb v nep\u0159\u00edzniv\u00e9m prost\u0159ed\u00ed. Tedy \u017ee pro pohyb vp\u0159ed se (p\u0159esn\u011b jako cyklist\u00e9) schov\u00e1vaj\u00ed jedna za druhou, aby u\u0161et\u0159ily s\u00edly v boji s odporem, aby m\u011bly dost a\u017e do&#8230; c\u00edlov\u00e9 \u010d\u00e1ry.<\/p>\n<div class=\"shortcode-ys-post-pinup\"><article class=\"loop-simple post-8045 post type-post status-publish format-standard has-post-thumbnail hentry category-zdravi-a-trenink tag-cyklistika tag-cyklistika-a-priroda tag-cyklistika-v-prirode tag-zdravi-a-trenink global-categories-cycling\" data-postid=\"8045\" role=\"article\" data-post-id=\"8045\" data-word-count=\"248\" data-headline-length=\"76\" data-category=\"Zdrav\u00ed a tr\u00e9nink\" data-global-category=\"Cycling\" data-author=\"Ji\u0159\u00ed Kalo\u010d\" data-published=\"2020-06-29T18:30:33+02:00\" data-published-day=\"Monday\">\n    <div class=\"entry-thumbnail article-thumbnail\" content=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-150x150.webp\"><a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/06\/29\/sport-v-prirode-je-spojen-s-vetsim-pocitem-stesti-dokazuje-vyzkum\/\" class=\"image-holder\" target=\"_self\"><img decoding=\"async\" loading=\"lazy\" class=\"\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-1024x683.webp\" srcset=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1.webp 1600w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-300x200.webp 300w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-1024x683.webp 1024w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-768x512.webp 768w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-1536x1024.webp 1536w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-Ond\u0159ej-Paur-michal-\u010derven\u00fd-13-kopc\u016f-1-272x182.webp 272w\" width=\"1024\" height=\"683\" sizes=\"auto, (min-width: 1200px) 300px, (min-width: 768px) 25vw, 100vw\" alt=\"sport-v-prirode-je-spojen-s-vetsim-pocitem-stesti-dokazuje-vyzkum\"\/><\/a><\/div>    <div class=\"entry-meta\">\n        <a class=\"label label-secondary post-category\" href=\"https:\/\/www.welovecycling.com\/cs\/category\/zdravi-a-trenink\/\" title=\"Zdrav\u00ed a tr\u00e9nink\">Zdrav\u00ed a tr\u00e9nink<\/a>\n    <\/div>\n    <div class=\"entry-details\">\n        <a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/06\/29\/sport-v-prirode-je-spojen-s-vetsim-pocitem-stesti-dokazuje-vyzkum\/\" class='entry-title-wrapper'>\n            <h3 class=\"entry-title\"><span>Sport v p\u0159\u00edrod\u011b je spojen s v\u011bt\u0161\u00edm pocitem \u0161t\u011bst\u00ed, dokazuje v\u00fdzkum<\/span><\/h3>\n        <\/a>\n    <\/div>\n    <\/article>\n<\/div>\n<p>Je velmi nezvykl\u00e9, aby se cyklistick\u00e1 terminologie vyu\u017e\u00edvala jinde ne\u017e v odborn\u00fdch publikac\u00edch o na\u0161em sportu. Tedy pokud se nejedn\u00e1 o doping v\u0161eho druhu, kter\u00fd je \u017eel bohu s cyklisty spojov\u00e1n v\u00edc ne\u017e s k\u00fdmkoliv jin\u00fdm. A p\u0159eci ned\u00e1vn\u00fd \u010dl\u00e1nek v New Scientist, mezin\u00e1rodn\u00edm v\u011bdeck\u00e9m magaz\u00ednu zam\u011b\u0159en\u00e9m na nejnov\u011bj\u0161\u00ed pokroky ve v\u011bd\u011b a technologii, na slovn\u00edk pelotonu vsadil. A vysv\u011btloval s n\u00edm pohyb spermi\u00ed.<\/p>\n<p>\u201eSpermie se p\u0159esn\u011b jako cyklist\u00e9 pohybuj\u00ed v bal\u00edku, kdy\u017e proch\u00e1zej\u00ed hust\u00fdm prost\u0159ed\u00edm vag\u00edny,\u201c stoj\u00ed v z\u00e1hlav\u00ed \u010dl\u00e1nku, co\u017e upoutalo pozornost v\u0161ech milovn\u00edk\u016f kola, co by jinak listovali d\u00e1l.<\/p>\n<h2><strong>Hrdinov\u00e9 z \u00faniku nemaj\u00ed \u0161anci<\/strong><\/h2>\n<p>Dosud jsme spermie vykreslovali jako s\u00f3lov\u00e9 hrdiny, kte\u0159\u00ed z\u00e1vod\u00ed ka\u017ed\u00fd s\u00e1m za sebe o to, kdo jako prvn\u00ed doraz\u00ed k vaj\u00ed\u010dku. Nicm\u00e9n\u011b tyto obr\u00e1zky jsou jen statick\u00fdm n\u00e1hledem mikroskopu, co nereflektuj\u00ed \u017eivost tohoto procesu. Proto\u017ee trojrozm\u011brn\u00fd portr\u00e9t vypr\u00e1v\u00ed jin\u00fd p\u0159\u00edb\u011bh. Podle n\u011bj se spermie shlukuj\u00ed do t\u00fdm\u016f a t\u00edmto zp\u016fsobem si pom\u00e1haj\u00ed v plavb\u011b proti proudu.<\/p>\n<p>\u201eV biologii je to tak, \u017ee kdy\u017e bu\u0148ky a organizmy n\u011bco d\u011blaj\u00ed, m\u011bly by z toho n\u011bco m\u00edt,\u201c \u0159\u00edk\u00e1 jeden z autor\u016f studie Chih-Kuan Tung. \u201eA to byla ta hlavn\u00ed ot\u00e1zka, kterou jsme si polo\u017eili: co z toho spermie maj\u00ed?\u201c<\/p>\n<figure id=\"attachment_18944\" aria-describedby=\"caption-attachment-18944\" style=\"width: 1920px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/Jizda-v-haku-unik.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-extra-large wp-image-18944\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/Jizda-v-haku-unik-1920x1280.jpg\" alt=\"J\u00edzda v h\u00e1ku je specialitou cyklistick\u00e9ho odv\u011btv\u00ed. Nebo ne? Foto: A.S.O.\/UniPublic\" width=\"1920\" height=\"1280\" \/><\/a><figcaption id=\"caption-attachment-18944\" class=\"wp-caption-text\"><em>J\u00edzda v h\u00e1ku je specialitou cyklistick\u00e9ho odv\u011btv\u00ed. Nebo ne? Foto: A.S.O.\/UniPublic<\/em><\/figcaption><\/figure>\n<p>Aby na\u0161li odpov\u011b\u010f, vytvo\u0159ili ameri\u010dt\u00ed in\u017een\u00fd\u0159i maketu kravsk\u00e9ho reproduk\u010dn\u00edho traktu, do kter\u00e9 vst\u0159\u00edkli 100 milion\u016f b\u00fd\u010d\u00edch spermi\u00ed. Ty se podobaj\u00ed lidsk\u00fdm. M\u011bly za \u00fakol pohybovat se trubic\u00ed napln\u011bnou hustou tekutinou. Um\u011ble pak uvnit\u0159 vytv\u00e1\u0159eli proud\u011bn\u00ed, kter\u00e9 m\u011blo v r\u016fzn\u00fdch \u010d\u00e1stech odli\u0161nou rychlost.<\/p>\n<div class=\"shortcode-ys-post-pinup\"><article class=\"loop-simple post-18702 post type-post status-publish format-standard has-post-thumbnail hentry category-zdravi-a-trenink tag-chris-froome tag-cyklistika tag-eddy-merckx tag-egan-bernal tag-horska-cyklistika tag-silnicni-cyklistika tag-zdravi-a-trenink tag-zranena-zada tag-zraneni global-categories-cycling\" data-postid=\"18702\" role=\"article\" data-post-id=\"18702\" data-word-count=\"513\" data-headline-length=\"33\" data-category=\"Zdrav\u00ed a tr\u00e9nink\" data-global-category=\"Cycling\" data-author=\"We Love Cycling\" data-published=\"2022-10-03T12:00:30+02:00\" data-published-day=\"Monday\">\n    <div class=\"entry-thumbnail article-thumbnail\" content=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-150x150.webp\"><a href=\"https:\/\/www.welovecycling.com\/cs\/2022\/10\/03\/anatomie-cyklistickych-zraneni\/\" class=\"image-holder\" target=\"_self\"><img decoding=\"async\" loading=\"lazy\" class=\"\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-1024x681.webp\" srcset=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315.webp 1800w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-300x200.webp 300w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-1024x681.webp 1024w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-768x511.webp 768w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-1536x1021.webp 1536w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2022\/10\/froome-profimedia-0196284315-272x182.webp 272w\" width=\"1024\" height=\"681\" sizes=\"auto, (min-width: 1200px) 300px, (min-width: 768px) 25vw, 100vw\" alt=\"anatomie-cyklistickych-zraneni\"\/><\/a><\/div>    <div class=\"entry-meta\">\n        <a class=\"label label-secondary post-category\" href=\"https:\/\/www.welovecycling.com\/cs\/category\/zdravi-a-trenink\/\" title=\"Zdrav\u00ed a tr\u00e9nink\">Zdrav\u00ed a tr\u00e9nink<\/a>\n    <\/div>\n    <div class=\"entry-details\">\n        <a href=\"https:\/\/www.welovecycling.com\/cs\/2022\/10\/03\/anatomie-cyklistickych-zraneni\/\" class='entry-title-wrapper'>\n            <h3 class=\"entry-title\"><span>Anatomie cyklistick\u00fdch zran\u011bn\u00ed<\/span><\/h3>\n        <\/a>\n    <\/div>\n    <\/article>\n<\/div>\n<p>Kde okoln\u00ed prost\u0159ed\u00ed bylo v klidu, se mal\u00e9 pelotony plavc\u016f pohybovaly rovn\u011b a rychleji ne\u017e individu\u00e1ln\u00ed \u201euprchl\u00edci\u201c. Kdy\u017e ale spermie narazily na protiproud a tedy vy\u0161\u0161\u00ed odpor, shlukly se do v\u011bt\u0161\u00edch skupin, aby v\u016fbec dok\u00e1zaly pokra\u010dovat v pohybu, zat\u00edmco s\u00f3list\u00e9 toho schopni nebyli v\u016fbec.<\/p>\n<p>Na rozd\u00edl od cyklistiky ale v pelotonu nebyl \u017e\u00e1dn\u00fd chr\u00e1n\u011bn\u00fd l\u00eddr. V bal\u00edku se po\u0159ad\u00ed dynamicky p\u0159es\u00fdpalo. Spermie m\u011bnily po\u0159ad\u00ed, odpadaly z h\u00e1ku a zase se vracely do \u201ez\u00e1v\u011bt\u0159\u00ed\u201c. \u201eJejich uspo\u0159\u00e1d\u00e1n\u00ed p\u0159ipomn\u011blo to, jak se pohybuj\u00ed cyklist\u00e9 po silnic\u00edch a t\u00edm bojuj\u00ed s aerodynamick\u00fdm odporem,\u201c uv\u00e1d\u00ed \u010dl\u00e1nek New Scientist.<\/p>\n<p>Pr\u00e1v\u011b t\u00fdmov\u00e1 pr\u00e1ce umo\u017e\u0148uje spermi\u00edm usp\u011bt a dos\u00e1hnout vaj\u00ed\u010dka. \u201eBez tohoto um\u011bn\u00ed by nejsp\u00ed\u0161 \u017e\u00e1dn\u00e1 neusp\u011bla,\u201c mysl\u00ed si Tung. Vedle toho, \u017ee jde o legra\u010dn\u00ed srovn\u00e1n\u00ed s na\u0161\u00edm milovan\u00fdm sportem, p\u0159isp\u00edvaj\u00ed tato zji\u0161t\u011bn\u00ed k diagnostice p\u0159\u00ed\u010din neplodnosti.<\/p>\n<p><em>Tituln\u00ed foto: Jan Brychta<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zn\u00e1te ty zpr\u00e1vy typu \u201eameri\u010dt\u00ed v\u011bdci zjistili, \u017ee&#8230;\u201c? I v tomto p\u0159\u00edpad\u011b p\u016fjde o chytr\u00e9 hlavy zpoza Atlantiku, kter\u00e9 ale [&hellip;]<\/p>\n","protected":false},"author":138,"featured_media":16814,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[660],"tags":[126,56,2604,9],"global-categories":[],"class_list":["post-18936","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-https-www-welovecycling-com-cs-category-zabava","tag-cyklistika","tag-horska-cyklistika","tag-jizda-v-haku","tag-silnicni-cyklistika"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.3 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kdo doopravdy vynalezl j\u00edzdu v h\u00e1ku? | \u0160koda We Love Cycling - \u010cesk\u00e1 republika<\/title>\n<meta name=\"description\" content=\"Pohyb v h\u00e1ku tak typick\u00fd pro cyklistiku, tu byl d\u00e1vno p\u0159ed objevem kola. 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