Komparativní analýza elektrické a mechanické odezvy činnosti kosterního svalu
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Date
2025-06-12
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Abstract
Tato diplomová práce se zabývá možnostmi komparativní analýzy elektrické a mechanické odezvy činnosti kosterního svalu. S využitím segmentální stavby těla byl vytvořen dynamický model pohybu dolní končetiny v kolenním kloubu (flexe/extenze) při pozici vsedě a byla verifikována jeho funkčnost pro analýzu izometrické, izokinetické a izotonické volní kontrakce musculus quadriceps femoris. Na základě souhrnu poznatků byla v prostředí MATLAB navržena analýza vícesvodového EMG signálu a ověřena její aplikovatelnost na reálných datech. V rámci experimentální části práce byla na základě vlastního empirického šetření provedena korelační analýza elektrické a mechanické odezvy činnosti kosterního svalu při izolované izometrické volní kontrakci m. quadriceps femoris. Zjištěné poznatky lze využít jako podklad pro navazující studie zabývající se hlubším pochopením souvislostí mezi elektrickou aktivitou svalu a jejím mechanickým efektem.
This master's thesis focuses on the possibilities of comparative analysis of the electrical and mechanical responses of skeletal muscle activity. A dynamic model of lower limb motion in the knee joint (flexion/extension) in a seated position was developed based on the segmental structure of the human body, and its functionality was validated for the analysis of isometric, isokinetic, and isotonic voluntary contractions of the musculus quadriceps femoris. Based on a summary of theoretical knowledge, a multichannel EMG signal analysis was designed in MATLAB and its applicability was verified using real experimental data. In the experimental part of the thesis, a correlation analysis of the electrical and mechanical responses during isolated isometric voluntary contraction of the m. quadriceps femoris was performed based on original empirical measurements. The obtained findings may serve as a foundation for further studies aimed at a deeper understanding of the relationship between muscle electrical activation and its mechanical manifestation.
This master's thesis focuses on the possibilities of comparative analysis of the electrical and mechanical responses of skeletal muscle activity. A dynamic model of lower limb motion in the knee joint (flexion/extension) in a seated position was developed based on the segmental structure of the human body, and its functionality was validated for the analysis of isometric, isokinetic, and isotonic voluntary contractions of the musculus quadriceps femoris. Based on a summary of theoretical knowledge, a multichannel EMG signal analysis was designed in MATLAB and its applicability was verified using real experimental data. In the experimental part of the thesis, a correlation analysis of the electrical and mechanical responses during isolated isometric voluntary contraction of the m. quadriceps femoris was performed based on original empirical measurements. The obtained findings may serve as a foundation for further studies aimed at a deeper understanding of the relationship between muscle electrical activation and its mechanical manifestation.
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elektromyografie (EMG), mechanická odezva svalové činnosti, izometrická volní kontrakce, dynamický model, komparativní analýza