Vych\u00e1z\u00edte po dlouh\u00e9m plav\u00e1n\u00ed z mo\u0159e nebo baz\u00e9nu a v\u0161imnete si, \u017ee m\u00e1te poko\u017eku na kone\u010dc\u00edch prst\u016f vr\u00e1s\u010ditou a bledou?<\/p>\n\n\n\n
V\u011bdci vysv\u011btlili d\u016fvod tohoto jevu.<\/p>\n\n\n\n
Po relaxa\u010dn\u00ed koupeli nebo dlouh\u00e9m plav\u00e1n\u00ed v baz\u00e9nu \u010di mo\u0159i je velmi b\u011b\u017en\u00e9 zaznamenat zm\u011bnu vzhledu kone\u010dk\u016f prst\u016f.<\/p>\n\n\n\n
Kone\u010dky zb\u011blaj\u00ed, k\u016f\u017ee se zvr\u00e1sn\u00ed<\/a> a zvr\u00e1sn\u00ed, p\u0159esto jemn\u00e1 na dotek.<\/p>\n\n\n\n Po n\u011bkolika minut\u00e1ch se k\u016f\u017ee postupn\u011b vrac\u00ed do sv\u00e9ho norm\u00e1ln\u00edho vzhledu. Zn\u00e1te d\u016fvod tohoto jevu? V\u011bdci to<\/a> vysv\u011btlili BBC.<\/p>\n\n\n\n Prvn\u00ed vr\u00e1sky se objevuj\u00ed asi po 3,5 minut\u00e1ch ve vod\u011b oh\u0159\u00e1t\u00e9 na 40 \u00b0C a ji\u017e po 10 minut\u00e1ch v chladn\u011bj\u0161\u00ed vod\u011b, kolem 20 \u00b0C. Po p\u016fl hodin\u011b se nejv\u011bt\u0161\u00ed vr\u00e1sky objevuj\u00ed na prstech. Tento z\u00e1hadn\u00fd jev n\u011bkte\u0159\u00ed odborn\u00edci studuj\u00ed. P\u0159edpokl\u00e1d\u00e1 se, \u017ee se jedn\u00e1 o reakci st\u0159edov\u00e9ho nervu, kter\u00fd prob\u00edh\u00e1 pod\u00e9l pa\u017ee k ruce a pom\u00e1h\u00e1 kontrolovat \u010dinnosti, jako je pocen\u00ed<\/a> a vazokonstrikce. \u201ePokud tato neurologick\u00e1 reakce, kter\u00e1 se vyskytuje u n\u011bkter\u00fdch lid\u00ed, chyb\u00ed, vr\u00e1sky jsou potla\u010deny<\/em> ,\u201c vysv\u011btluje neurov\u011bdec Nick Davis v rozhovoru pro BBC.com.<\/p>\n\n\n\n V roce 2003 neurologov\u00e9 Einar Wilder-Smith a Adeline Chow m\u011b\u0159ili pr\u016ftok krve v rukou lid\u00ed, kte\u0159\u00ed je namo\u010dili do vody. Jejich zji\u0161t\u011bn\u00ed: jak se kon\u010detiny vr\u00e1s\u010dily, pozorovali pokles pr\u016ftoku krve do prst\u016f. Aplikovali tak\u00e9 lok\u00e1ln\u00ed anestetick\u00fd kr\u00e9m, kter\u00fd zp\u016fsobil do\u010dasn\u00e9 z\u00fa\u017een\u00ed c\u00e9v. V\u00fdsledek? Podobn\u00e9 vr\u00e1sky se objevily na kone\u010dc\u00edch prst\u016f.<\/p>\n\n\n\n \u201eD\u00e1v\u00e1 to smysl, kdy\u017e se pod\u00edv\u00e1te na sv\u00e9 prsty, jak se vr\u00e1sn\u00ed. Kone\u010dky prst\u016f zblednou, proto\u017ee pr\u016ftok krve je omezen na povrch,\u201c<\/em> vysv\u011btluje Nick Davis. To zp\u016fsob\u00ed, \u017ee se potn\u00ed kan\u00e1lky v prstech otev\u0159ou a umo\u017en\u00ed vstup vody, co\u017e vede ke zm\u011bn\u011b elektrolytov\u00e9 rovnov\u00e1hy k\u016f\u017ee. Tato nerovnov\u00e1ha spou\u0161t\u00ed aktivaci nervov\u00fdch vl\u00e1ken a z\u00fa\u017een\u00ed c\u00e9v.<\/p>\n\n\n\n To nen\u00ed v\u0161e; vr\u00e1sky se neobjevuj\u00ed u ka\u017ed\u00e9ho stejn\u011b rychle. Tento jev se vyskytuje pomaleji nap\u0159\u00edklad u lid\u00ed s lup\u00e9nkou<\/a> nebo vitiligem, ale tak\u00e9 u lid\u00ed s cukrovkou 2. typu nebo srde\u010dn\u00edm selh\u00e1n\u00edm. A kone\u010dn\u011b, u \u017een se vr\u00e1sky objevuj\u00ed d\u00e9le ne\u017e u mu\u017e\u016f.<\/p>\n","protected":false},"excerpt":{"rendered":"Vych\u00e1z\u00edte po dlouh\u00e9m plav\u00e1n\u00ed z mo\u0159e nebo baz\u00e9nu a v\u0161imnete si, \u017ee m\u00e1te poko\u017eku na kone\u010dc\u00edch prst\u016f vr\u00e1s\u010ditou a bledou? V\u011bdci vysv\u011btlili d\u016fvod \n [...]<\/a>","protected":false},"author":1,"featured_media":14212,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/posts\/14211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14211"}],"version-history":[{"count":1,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/posts\/14211\/revisions"}],"predecessor-version":[{"id":14213,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/posts\/14211\/revisions\/14213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=\/wp\/v2\/media\/14212"}],"wp:attachment":[{"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fakt24.biz.ua\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Pro\u010d se mi po plav\u00e1n\u00ed vr\u00e1sn\u00ed prsty?<\/h2>\n\n\n\n
Pro\u010d se mi prsty vr\u00e1sn\u00ed pomaleji?<\/h2>\n\n\n\n