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Facta universitatis - series: Physical Education and Sport
2006, vol. 4, br. 2, str. 103-114
jezik rada: engleski
vrsta rada: naučni članak

Biomehanički model sprinterskog starta i blok ubrzanja
Faculty of Sport, Ljubljana

e-adresa: milan.coh@fsp.uni-lj.si

Sažetak

Ovo istraživanje analizira i indentifikuje glavne kinematičke parametre faza sprinterskog starta i bloka ubrzanja koji utiču na rezultate u sprinterskom trčanju. Biomehanička merenja i kinematička analiza su urađeni na najboljem svetskom sprinteru tokom njegovih priprema za Evropsko atletsko prvenstvo u Geteborgu 2006. godine. U ovom takmičenju Matic Osovnikar je osvojio bronzanu medalju u trci na 100 metara i postavio slovenački rekord od 10,14s. Kinematički parametri sprinterskog starta su ustanovljeni putem 2-D kinematičke analize. Kinematički parametri sprinterskog starta su upoređivani pomoću 2-D kinematičke analize i visokobrzinske kamere frekvencije 200 F/s. Merenja ubrzanja na blokovima su urađena pomoću opto Track tehnologije i infracrvenim fotoćelijskim sistemom. Takmičar je izveo pet niskostartnih sprinteva na 20 metara u konstantnim i kontrolisanim uslovima merenja. Cilj istraživanja je startna pozicija uzimajući u obzir visinu celog tela u središtu gravitacije (TBCG), vreme na prednjem i zadnjem bloku, brzinu na bloku, ugao na bloku, brzinu TBCG u prva tri metra na bloku, indeks faze kontakta/trčanja u prvih deset koraka i optimalni odnos dužine i frekvencije koraka.

Ključne reči

sprinterski start; ubrzanje na bloku; tehnika; kinematika; vrhunski sprinter

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