{"id":16653,"date":"2022-04-27T12:00:06","date_gmt":"2022-04-27T10:00:06","guid":{"rendered":"https:\/\/www.welovecycling.com\/cs\/?p=16653"},"modified":"2022-04-26T21:26:46","modified_gmt":"2022-04-26T19:26:46","slug":"jizda-v-kopcich-je-vyhodnejsi-sedet-nebo-stat-v-pedalech","status":"publish","type":"post","link":"https:\/\/www.welovecycling.com\/cs\/2022\/04\/27\/jizda-v-kopcich-je-vyhodnejsi-sedet-nebo-stat-v-pedalech\/","title":{"rendered":"J\u00edzda v kopc\u00edch: je v\u00fdhodn\u011bj\u0161\u00ed sed\u011bt, nebo st\u00e1t v ped\u00e1lech?"},"content":{"rendered":"

A bylo d\u0159\u00edv vejce, nebo slepice? Stejn\u011b jako se neshodneme v t\u00e9to ot\u00e1zce, tak prof\u00edci jednozna\u010dn\u011b neodpov\u00ed ani na jednu ze dvou n\u00e1sleduj\u00edc\u00edch mo\u017enost\u00ed: je v kopc\u00edch v\u00fdhodn\u011bj\u0161\u00ed sed\u011bt, nebo st\u00e1t v ped\u00e1lech? A tak je mo\u017en\u00e1 \u010das zeptat se fyzik\u016f.<\/strong><\/p>\n

Na Vuelt\u011b 2014 a pak je\u0161t\u011b n\u011bkolikr\u00e1t proti sob\u011b rameno na rameni bojovali v t\u011bch nejob\u00e1van\u011bj\u0161\u00edch \u0161pan\u011blsk\u00fdch velehor\u00e1ch dva v\u00fdjime\u010dn\u00ed vrcha\u0159i. Duel Alberto Contador vs. Chris Froome roky bavil cyklistiku snad i proto, \u017ee oba byli odli\u0161n\u00ed jako noc a den.<\/p>\n

\u0160pan\u011bl, nakonec celkov\u00fd v\u00edt\u011bz dom\u00e1c\u00ed Grand Tour, v\u017edy preferoval tanec vstoje neboli jak\u00e9si tane\u010dky v ped\u00e1lech. Naproti tomu britsk\u00fd l\u00eddr st\u00e1je Sky jako p\u0159ikovan\u00fd sed\u011bl na kole a ot\u00e1\u010del ped\u00e1ly v a\u017e nelidsk\u00e9 kadenci. Ob\u011b techniky byly efektivn\u00ed. Ale kterou by m\u011bl volit b\u011b\u017en\u00fd smrteln\u00edk?<\/p>\n

\n
\"jak-slapat-ve-vetru\"\/<\/a><\/div>
\n Rady & tipy<\/a>\n <\/div>\n
\n \n

Jak \u0161lapat ve v\u011btru?<\/span><\/h3>\n <\/a>\n <\/div>\n <\/article>\n<\/div>\n

Cel\u00e1 z\u00e1hada le\u017e\u00ed p\u0159\u00edmo p\u0159ed v\u00e1mi \u2013 ten \u010di onen zp\u016fsob se odv\u00edj\u00ed od d\u00e9lky a sklonu kopce, se kter\u00fdm z\u00e1pas\u00edme. \u010c\u00edm m\u00edrn\u011bj\u0161\u00ed stoup\u00e1n\u00ed bude, t\u00edm jedeme rychleji, tak\u017ee nen\u00ed nutno st\u00e1t. Co\u017e p\u0159in\u00e1\u0161\u00ed i v\u00fdhodu v oblasti aerodynamiky. Naopak v prudk\u00e9m kopci lze s \u00fasp\u011bchem vyu\u017e\u00edt pozici vestoje, i kdyby m\u011blo j\u00edt jen o kr\u00e1tkodobou zm\u011bnu tempa \u010di \u00falevu sedac\u00edm parti\u00edm.<\/p>\n

Obstoj\u00ed ale takov\u00e9 jednoduch\u00e9 vysv\u011btlen\u00ed proti jasn\u00fdm dat\u016fm z u\u010debnic fyziky? Vzore\u010dky v\u00e1s tu nechceme zat\u011b\u017eovat, ale i bez nich v\u011bda hovo\u0159\u00ed o celkem zjevn\u00e9 skute\u010dnosti. Leh\u010d\u00ed a vy\u0161\u0161\u00edm wattov\u00fdm v\u00fdkonem na kilogram t\u011blesn\u00e9 v\u00e1hy jsou v kopc\u00edch \u00fasp\u011b\u0161n\u011bj\u0161\u00ed. Tak\u017ee kdy\u017e se jmenujete Alberto Contador, m\u011b\u0159\u00edte 176 cm a v\u00e1\u017e\u00edte 61 kilo, pak v\u00e1m v kopci m\u00e1lo kdo bude sta\u010dit.<\/p>\n

Kdy z\u016fstat v sedle? Do sklonu 10 procent<\/strong><\/h2>\n

V roce 2008 profesor Ernst Hansen z matematick\u00e9 fakulty Koda\u0148sk\u00e9 univerzity spo\u010detl, \u017ee pro cyklisty je v\u00fdhodn\u011bj\u0161\u00ed z\u016fstat v sedle do doby, ne\u017e sklon vozovky p\u0159ekro\u010d\u00ed 10 procent. Od toho momentu je j\u00edzda vstoje efektivn\u011bj\u0161\u00ed co do v\u00fddeje energie, a\u010dkoliv cyklist\u00e9 tak spot\u0159ebov\u00e1vaj\u00ed o 5 procent v\u00edce kysl\u00edku.<\/p>\n

B\u011bhem kr\u00e1tk\u00fdch interval\u016f (m\u00e9n\u011b ne\u017e 30 sekund) dok\u00e1zali stoj\u00edc\u00ed cyklist\u00e9 vyvinout o \u010dtvrtinu vy\u0161\u0161\u00ed v\u00fdkon ne\u017e sed\u00edc\u00ed. Z v\u00fdzkumu ale tak\u00e9 plyne, \u017ee kolem sklonu 4 % a p\u0159i rychlosti 19 km\/h pot\u0159ebuje sed\u00edc\u00ed jezdec o 10 % m\u00e9n\u011b kysl\u00edku ne\u017e ten stoj\u00edc\u00ed. Prim\u00e1rn\u00ed d\u016fvod je ten, \u017ee masa trupu je vsed\u011b dr\u017eena pr\u00e1v\u011b sedlem, a t\u00edm se \u0161et\u0159\u00ed energie.<\/p>\n

\"J\u00edzda<\/a>
J\u00edzda v kopc\u00edch? Je v\u00fdhodn\u011bj\u0161\u00ed sed\u011bt nebo st\u00e1t v ped\u00e1lech? Foto: Michal \u010cerven\u00fd (3x)<\/em><\/figcaption><\/figure>\n

Snad i proto v horsk\u00e9m vl\u00e1\u010dku bude v\u011bt\u0161ina p\u0159\u00edtomn\u00fdch volit m\u00e9n\u011b energeticky n\u00e1ro\u010dn\u00fd zp\u016fsob. A ten opa\u010dn\u00fd volit p\u0159\u00edle\u017eitostn\u011b, t\u0159eba p\u0159i \u00fatoku na soupe\u0159e nebo v reakci na n\u011bj. Kdo vydr\u017e\u00ed d\u00e9le, je sp\u00ed\u0161 v\u00fdjimkou.<\/p>\n

V roce 2013 vyhr\u00e1l Vueltu Ameri\u010dan Chris Horner. Ve 41 letech se stal nejstar\u0161\u00edm v\u00edt\u011bzem z\u00e1vodu Grand Tour. Krom v\u011bku byl pozoruhodn\u00fd je\u0161t\u011b i sv\u00fdm stylem \u0161lap\u00e1n\u00ed v hor\u00e1ch, proto\u017ee tak dlouh\u00e9 \u00faseky vstoje nikdo jin\u00fd v poli nezvl\u00e1dal. Ale evidentn\u011b to fungovalo.<\/p>\n

\n
\"kopce-letape-czech-republic-by-tour-de-france-2022\"\/<\/a><\/div>
\n Silni\u010dn\u00ed cyklistika<\/a>\n <\/div>\n
\n \n

Kopce L\u2019Etape Czech Republic by Tour de France 2022<\/span><\/h3>\n <\/a>\n <\/div>\n <\/article>\n<\/div>\n

Vestoje dok\u00e1\u017ee cyklista potenci\u00e1ln\u011b vyvinout v\u00edc s\u00edly d\u00edky rozd\u00edl\u016fm v kinetick\u00e9m \u0159et\u011bzci, kter\u00fd za\u010d\u00edn\u00e1 u trupu. Vestoje jezdec m\u016f\u017ee jako p\u00e1ku vyu\u017e\u00edt \u0159\u00edd\u00edtka a \u010d\u00edm budou \u0161ir\u0161\u00ed, t\u00edm lep\u0161\u00ed. V\u017edy\u0165 i Horner na Vuelt\u011b m\u011bl na svoji postavu super\u0161irok\u00e9 oblouky. N\u011bkolik let p\u0159edt\u00edm mu mechanik chybn\u011b namontoval \u0159\u00edd\u00edtka \u0161\u00ed\u0159e 46 cm, ale Ameri\u010dan si na n\u011b zvykl a vyu\u017eil je pak ve sv\u016fj prosp\u011bch.<\/p>\n

J\u00edzda vestoje nen\u00ed ekonomick\u00e1<\/strong><\/h2>\n

J\u00edzda vestoje takt\u00e9\u017e m\u011bn\u00ed t\u011blesn\u00e9 \u00fahly, hlavn\u011b ten v ky\u010dli. T\u00edm, \u017ee ho v\u00edc otev\u0159eme, aktivujeme v\u00edce sval\u016f v\u010detn\u011b t\u011bch h\u00fd\u017e\u010fov\u00fdch a v\u011bt\u0161\u00ed \u010d\u00e1sti stehenn\u00edch, co\u017e otev\u00edr\u00e1 nov\u00fd zdroj s\u00edly. Vsed\u011b je tento \u00fahel (a zdroj s\u00edly) zav\u0159en\u00fd.<\/p>\n

Rozsah pohybu mezi sed\u00edc\u00ed a stoj\u00edc\u00ed pozic\u00ed m\u016f\u017ee nar\u016fst ze 40\u00b0 na 70\u00b0, stejn\u011b tak flexe v kolenou roste ze zhruba 30\u00b0 na 75\u00b0. Nakonec i pohyb v kotn\u00edku je vy\u0161\u0161\u00ed, a to z 25\u00b0 vsed\u011b na 40\u00b0 vstoje. Jsou to \u00fahly podobn\u00e9 b\u011bhu.<\/p>\n

\"J\u00edzda<\/a>
J\u00edzda v kopc\u00edch? Nino Schurter tla\u010d\u00ed do ped\u00e1l\u016f p\u0159i z\u00e1vod\u011b Sv\u011btov\u00e9ho poh\u00e1ru v Nov\u00e9m M\u011bst\u011b na Morav\u011b.<\/em><\/figcaption><\/figure>\n

Vestoje tedy vyvineme v\u011bt\u0161\u00ed s\u00edlu, ale nutno dodat, \u017ee to n\u011bco stoj\u00ed. \u010c\u00edm v\u011bt\u0161\u00ed budete, t\u00edm v\u00edc energie sp\u00e1l\u00edte, tak\u017ee i j\u00edzda vestoje bude o to m\u00e9n\u011b ekonomick\u00e1. Jen pro ilustraci: Contador v\u00e1\u017eil 61 a Froome 69 kil, tak\u017ee snad i z toho lze vy\u010d\u00edst, pro\u010d ten t\u011b\u017e\u0161\u00ed z dvojice preferoval sv\u016fj styl.<\/p>\n

A\u0165 je ten v\u00e1\u0161 jak\u00fdkoliv z dvou diskutovan\u00fdch, jedna v\u011bc je spole\u010dn\u00e1 ob\u011bma \u2013 vrcha\u0159ina bol\u00ed a je jedno, jestli vsed\u011b, nebo vestoje.<\/p>\n","protected":false},"excerpt":{"rendered":"

A bylo d\u0159\u00edv vejce, nebo slepice? Stejn\u011b jako se neshodneme v t\u00e9to ot\u00e1zce, tak prof\u00edci jednozna\u010dn\u011b neodpov\u00ed ani na jednu […]<\/p>\n","protected":false},"author":138,"featured_media":16773,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[2369,2370,1561,27,2371],"global-categories":[411],"class_list":["post-16653","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zdravi-a-trenink","tag-chris-horner","tag-ernst-hansen","tag-kopce","tag-trenink","tag-vyzkum-jizdy-ze-sedla","global-categories-cycling"],"yoast_head":"\nJ\u00edzda v kopc\u00edch: je v\u00fdhodn\u011bj\u0161\u00ed sed\u011bt, nebo st\u00e1t v ped\u00e1lech? | \u0160koda We Love Cycling - \u010cesk\u00e1 republika<\/title>\n<meta name=\"description\" content=\"Je v kopc\u00edch v\u00fdhodn\u011bj\u0161\u00ed sed\u011bt, nebo st\u00e1t v ped\u00e1lech? 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