Mnoho lid\u00ed si v\u0161imlo, \u017ee po opu\u0161t\u011bn\u00ed baz\u00e9nu, mo\u0159e nebo dokonce sprchy se rychle objev\u00ed pocit chladu. I v hork\u00fdch dnech m\u016f\u017ee b\u00fdt tento pocit na chv\u00edli pom\u011brn\u011b intenzivn\u00ed. Tento jev je zcela norm\u00e1ln\u00ed a vznik\u00e1 v d\u016fsledku toho, jak lidsk\u00e9 t\u011blo reaguje na zm\u011bny teploty.<\/p>\n\n\n\n
Pocit chladu p\u0159i v\u00fdstupu z vody p\u0159\u00edmo souvis\u00ed s odpa\u0159ov\u00e1n\u00edm vody z k\u016f\u017ee, ztr\u00e1tou t\u011blesn\u00e9ho tepla a okoln\u00edmi podm\u00ednkami. Na\u0161e t\u011bla neust\u00e1le pracuj\u00ed na udr\u017een\u00ed stabiln\u00ed vnit\u0159n\u00ed teploty a jak\u00e1koli zm\u011bna t\u00e9to rovnov\u00e1hy m\u016f\u017ee zp\u016fsobit pocity horka nebo chladu.<\/p>\n\n\n\n
Pro lep\u0161\u00ed pochopen\u00ed tohoto jevu je d\u016fle\u017eit\u00e9 zn\u00e1t n\u011bkter\u00e9 fyzik\u00e1ln\u00ed a biologick\u00e9 procesy, kter\u00e9 prob\u00edhaj\u00ed v t\u011ble, kdy\u017e vstupujeme do vody a opou\u0161t\u00edme ji.<\/p>\n\n\n\n
Lidsk\u00e9 t\u011blo m\u00e1 pr\u016fm\u011brnou teplotu p\u0159ibli\u017en\u011b 36 a\u017e 37 stup\u0148\u016f Celsia. T\u011blo neust\u00e1le pracuje na udr\u017een\u00ed t\u00e9to stabiln\u00ed teploty, proto\u017ee je nezbytn\u00e1 pro spr\u00e1vn\u00e9 fungov\u00e1n\u00ed org\u00e1n\u016f a syst\u00e9m\u016f.<\/p>\n\n\n\n
Kdy\u017e se nach\u00e1z\u00edme v chladn\u00e9m prost\u0159ed\u00ed, t\u011blo se sna\u017e\u00ed uchovat teplo. V hork\u00e9m prost\u0159ed\u00ed se sna\u017e\u00ed teplo uvolnit, aby se zabr\u00e1nilo p\u0159eh\u0159\u00e1t\u00ed.<\/p>\n\n\n\n
Kdy\u017e vstoup\u00edme do vody, zejm\u00e9na pokud je chladn\u011bj\u0161\u00ed ne\u017e na\u0161e t\u011blesn\u00e1 teplota, doch\u00e1z\u00ed k v\u00fdm\u011bn\u011b tepla. Voda za\u010dne absorbovat \u010d\u00e1st t\u011blesn\u00e9ho tepla, co\u017e zp\u016fsob\u00ed sn\u00ed\u017een\u00ed teploty k\u016f\u017ee.<\/p>\n\n\n\n
Pocit chladu je v\u0161ak obvykle je\u0161t\u011b intenzivn\u011bj\u0161\u00ed v okam\u017eiku, kdy vylezeme z vody.<\/p>\n\n\n\n
Jedn\u00edm z hlavn\u00edch d\u016fvod\u016f, pro\u010d n\u00e1m je zima, kdy\u017e vylezeme z vody, je proces zvan\u00fd vypa\u0159ov\u00e1n\u00ed<\/strong>. Kdy\u017e je k\u016f\u017ee mokr\u00e1, voda na jej\u00edm povrchu se p\u0159i kontaktu se vzduchem za\u010dne odpa\u0159ovat.<\/p>\n\n\n\n K odpa\u0159ov\u00e1n\u00ed je zapot\u0159eb\u00ed tepeln\u00e1 energie. Tato energie se z\u00edsk\u00e1v\u00e1 z tepla p\u0159\u00edtomn\u00e9ho v k\u016f\u017ei. V d\u016fsledku toho se teplota k\u016f\u017ee sni\u017euje.<\/p>\n\n\n\n Tento proces je podobn\u00fd tomu, co se d\u011bje, kdy\u017e se pot\u00edme b\u011bhem fyzick\u00e9 aktivity. Pot se odpa\u0159uje a pom\u00e1h\u00e1 ochlazovat t\u011blo.<\/p>\n\n\n\n Kdy\u017e vystoup\u00edme z vody, velk\u00e9 mno\u017estv\u00ed tekutiny p\u0159\u00edtomn\u00e9 na k\u016f\u017ei urychluje tento proces odpa\u0159ov\u00e1n\u00ed a zvy\u0161uje pocit chladu.<\/p>\n\n\n\n V\u00edtr m\u016f\u017ee tak\u00e9 v\u00fdrazn\u011b zes\u00edlit pocit chladu po vylezen\u00ed z vody. Kdy\u017e kolem t\u011bla cirkuluje vzduch, odpa\u0159ov\u00e1n\u00ed vody z k\u016f\u017ee prob\u00edh\u00e1 rychleji.<\/p>\n\n\n\n \u010c\u00edm rychleji se voda odpa\u0159uje, t\u00edm v\u00edce tepla se odv\u00e1d\u00ed od poko\u017eky. D\u00edky tomu je pocit chladu je\u0161t\u011b siln\u011bj\u0161\u00ed.<\/p>\n\n\n\n Z tohoto d\u016fvodu se mnoho lid\u00ed c\u00edt\u00ed mnohem chladn\u011bji, kdy\u017e vyjdou z mo\u0159e za v\u011btrn\u00e9ho dne, ne\u017e v uzav\u0159en\u00e9m prost\u0159ed\u00ed, jako je nap\u0159\u00edklad kryt\u00fd baz\u00e9n.<\/p>\n\n\n\n V\u00edtr urychluje ochlazov\u00e1n\u00ed k\u016f\u017ee a zvy\u0161uje pocit chladu.<\/p>\n\n\n\n Voda m\u00e1 mnohem v\u011bt\u0161\u00ed schopnost v\u00e9st teplo ne\u017e vzduch. To znamen\u00e1, \u017ee m\u016f\u017ee sn\u00e1ze odv\u00e1d\u011bt teplo od t\u011bla.<\/p>\n\n\n\n I kdy\u017e je voda tepl\u00e1 nebo p\u0159\u00edjemn\u00e1, obvykle je chladn\u011bj\u0161\u00ed ne\u017e t\u011blesn\u00e1 teplota. B\u011bhem doby, kterou ve vod\u011b str\u00e1v\u00edme, t\u011blo postupn\u011b ztr\u00e1c\u00ed teplo.<\/p>\n\n\n\n Kdy\u017e jsme ve vod\u011b, tuto tepelnou ztr\u00e1tu \u010dasto tak intenzivn\u011b nevn\u00edm\u00e1me. Kdy\u017e se v\u0161ak dostaneme ven a p\u0159ijdeme do kontaktu se vzduchem, tento teplotn\u00ed rozd\u00edl se st\u00e1v\u00e1 z\u0159eteln\u011bj\u0161\u00edm.<\/p>\n\n\n\n Tato n\u00e1hl\u00e1 zm\u011bna m\u016f\u017ee zes\u00edlit pocit chladu.<\/p>\n\n\n\n Kdy\u017e t\u011blo c\u00edt\u00ed, \u017ee rychle ztr\u00e1c\u00ed teplo, aktivuje n\u011bkter\u00e9 p\u0159irozen\u00e9 obrann\u00e9 mechanismy, aby si udr\u017eelo vnit\u0159n\u00ed teplotu.<\/p>\n\n\n\n Jedn\u00edm z t\u011bchto mechanism\u016f je sta\u017een\u00ed krevn\u00edch c\u00e9v v bl\u00edzkosti k\u016f\u017ee<\/strong>, Tento proces se naz\u00fdv\u00e1 vazokonstrikce. Sni\u017euje pr\u016ftok krve k povrchu t\u011bla, aby se zachovalo teplo ve vnit\u0159n\u00edch org\u00e1nech.<\/p>\n\n\n\n Dal\u0161\u00ed \u010dastou reakc\u00ed je zimnice<\/strong>. Mal\u00e9 svaly p\u0159ipojen\u00e9 k vlasov\u00fdm folikul\u016fm v k\u016f\u017ei se stahuj\u00ed, co\u017e zp\u016fsobuje, \u017ee se chloupky naje\u017e\u00ed. A\u010dkoli je tento mechanismus \u00fa\u010dinn\u011bj\u0161\u00ed u zv\u00ed\u0159at s hust\u0161\u00ed srst\u00ed, st\u00e1le se vyskytuje i u lid\u00ed.<\/p>\n\n\n\n Tyto reakce jsou pokusy t\u011bla o udr\u017een\u00ed tepeln\u00e9 rovnov\u00e1hy.<\/p>\n\n\n\n Intenzita chladu p\u0159i v\u00fdstupu z vody se m\u016f\u017ee zna\u010dn\u011b li\u0161it v z\u00e1vislosti na n\u011bkolika faktorech. Pat\u0159\u00ed mezi n\u011b:<\/p>\n\n\n\n Pokud je voda p\u0159\u00edli\u0161 studen\u00e1 nebo pokud v n\u00ed \u010dlov\u011bk z\u016fstane p\u0159\u00edli\u0161 dlouho, t\u011blo m\u016f\u017ee ztratit v\u00edce tepla, co\u017e po vystoupen\u00ed zes\u00edl\u00ed pocit chladu.<\/p>\n\n\n\n Podobn\u011b prost\u0159ed\u00ed se siln\u00fdm v\u011btrem nebo ni\u017e\u0161\u00edmi teplotami tento efekt d\u00e1le zesiluje.<\/p>\n\n\n\n Existuje n\u011bkolik jednoduch\u00fdch zp\u016fsob\u016f, jak zm\u00edrnit pocit chladu p\u0159i vyl\u00e9z\u00e1n\u00ed z vody. Jedn\u00edm z nej\u00fa\u010dinn\u011bj\u0161\u00edch je rychl\u00e9 osu\u0161en\u00ed t\u011bla ru\u010dn\u00edkem. Odstran\u011bn\u00edm vody z k\u016f\u017ee se zpomal\u00ed proces odpa\u0159ov\u00e1n\u00ed.<\/p>\n\n\n\n Dal\u0161\u00edm tipem je co nejrychleji si obl\u00e9knout such\u00e9 oble\u010den\u00ed. To pom\u00e1h\u00e1 uchovat t\u011blesn\u00e9 teplo a sni\u017euje kontakt mezi mokrou k\u016f\u017e\u00ed a studen\u00fdm vzduchem.<\/p>\n\n\n\n Je tak\u00e9 u\u017eite\u010dn\u00e9 hledat chr\u00e1n\u011bn\u00e1 m\u00edsta mimo v\u00edtr, proto\u017ee cirkulace vzduchu urychluje ztr\u00e1ty tepla.<\/p>\n\n\n\n Tato opat\u0159en\u00ed pom\u00e1haj\u00ed t\u011blu rychleji obnovit norm\u00e1ln\u00ed teplotu.<\/p>\n\n\n\n Pocit chladu p\u0159i opu\u0161t\u011bn\u00ed vody vznik\u00e1 p\u0159edev\u0161\u00edm v d\u016fsledku odpa\u0159ov\u00e1n\u00ed vody z k\u016f\u017ee a ztr\u00e1ty t\u011blesn\u00e9ho tepla do okoln\u00edho prost\u0159ed\u00ed. Kdy\u017e se voda odpa\u0159uje, odv\u00e1d\u00ed teplo od k\u016f\u017ee, sni\u017euje jej\u00ed teplotu a zp\u016fsobuje pocit chladu.<\/p>\n\n\n\n Intenzitu tohoto efektu ovliv\u0148uj\u00ed tak\u00e9 faktory, jako je v\u00edtr, okoln\u00ed teplota a doba str\u00e1ven\u00e1 ve vod\u011b. I kdy\u017e to m\u016f\u017ee b\u00fdt na chv\u00edli nep\u0159\u00edjemn\u00e9, tento proces je sou\u010d\u00e1st\u00ed p\u0159irozen\u00e9ho fungov\u00e1n\u00ed lidsk\u00e9ho t\u011bla.<\/p>\n\n\n\n Pochopen\u00ed toho, jak t\u011blo reaguje na zm\u011bny teploty, pom\u00e1h\u00e1 vysv\u011btlit, pro\u010d n\u00e1m je zima, kdy\u017e vyjdeme z vody, a to i v zd\u00e1nliv\u011b tepl\u00fdch dnech.<\/p>","protected":false},"excerpt":{"rendered":" Muitas pessoas j\u00e1 perceberam que, ao sair da piscina, do mar ou at\u00e9 mesmo do banho, surge rapidamente uma sensa\u00e7\u00e3o de frio. Mesmo em dias quentes, essa sensa\u00e7\u00e3o pode aparecer de forma bastante intensa por alguns instantes. Esse fen\u00f4meno \u00e9 completamente normal e acontece por causa da forma como o corpo humano reage \u00e0s mudan\u00e7as […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-782","post","type-post","status-publish","format-standard","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/comments?post=782"}],"version-history":[{"count":1,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":784,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/posts\/782\/revisions\/784"}],"wp:attachment":[{"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/media?parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/categories?post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nolbviral.com\/cs\/wp-json\/wp\/v2\/tags?post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Vliv v\u011btru<\/strong><\/h2>\n\n\n\n
Ztr\u00e1ta tepla ve vod\u011b<\/strong><\/h2>\n\n\n\n
Reakce t\u011bla na chlad<\/strong><\/h2>\n\n\n\n
Pro\u010d se v n\u011bkter\u00fdch situac\u00edch c\u00edt\u00edme chladn\u011bji?<\/strong><\/h2>\n\n\n\n
\n
Jak zm\u00edrnit pocit chladu<\/strong><\/h2>\n\n\n\n
Z\u00e1v\u011br<\/strong><\/h2>\n\n\n\n