Evaluace softballových hodů pomocí povrchové elektromyografie a kinematické analýzy (2D a 3D)

Abstract

Headline: Evaluation of the throwing motion in softball using surface electromyography and 2D and 3D kinematics analysis Aim of the Thesis: To point out differences in the internal structure of various overhead throws (throwing motion in softball and in track & field (javelin), two-hand overhead throwing of a medicine ball). To describe these differences using surface electromyography and to find the cause thereof based on 2D and 3D kinematics analysis. Methods: Surface EMG measurement in combination with 2D and 3D kinematics analysis (using synchronized video recordings). Results: The results indicate differences amongst the mechanics of the throwing motion in individual disciplines. The relative timing of two various throwing motions is different from the viewpoint of an intra-individual comparison, except for the "normal throwing motion" and javelin throw from the spot, which have the same relative timing. The relative timing is different for other various throwing motions. With the use of 2D and 3D kinematics analysis, it is possible to find the causes of the differences in the internal structure of the measured throwing motions. From an intra-individual viewpoint, the relative timing of a single type of throwing motion does not change within the group of overhead throwingmotions. Key words:...

Nazev: Evaluace softballovych hodu pomoci povrchove elektromyografie a kinematicke analyzy (2D a 3D). Cfl prace: Ukazat na rozdily ve vnitfni struktufe ruznych hodu vrchnim obloukem (softballovy hod, hod ostepem a hod obouruc medicinbalem). Popsat tyto rozdily pomoci elektromyografie a diky kinematicke analyze (2D a 3D) najit jejich pficinu. Metoda: Povrchove EMG mefeni v kombinaci s 2D a 3D kinematografickou analyzou (pomoci synchronizovaneho videozaznamu). Vysledky: Ukazuji na rozdily mezi technikami jednotlivych hodu. Relativni nacasovani provedeni dvou ruznych hodu vrchnim obloukem (normalni hod a celni hod softballovym micem, hod obouruc medicinbalem, hod ostepem z mista) je z hlediska intraindividudlniho porovnani rozdilne. Vyjimku tvofi dvojice normalniho hodu a hodu ostepem z mista, kde jejich relativni nacasovani je stejne. (U ostatnich ruznych hodu je relativni nacasovani rozdilne). Z pohledu intraindividualniho je relativni nacasovani u skupiny hodu ,,vrchnim vzorcem"jednoho typu hodu invariantni. Klicova slova: hod vrchnim obloukem, softball, elektromyografie, svalovy tonus, kinematicka analyza (2D a 3D), svalove fetezce, korelace, rotacni pohybovy vzorec