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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
The effect of initial position in ankle joints on the muscle activity of the quadriceps femoris during reverse Nordic Hamstring Exercise measured using surface electromyography
 Ruferová, Zdeňka ; Nováková, Tereza (advisor) ; Lopot, František (referee)
Title: The effect of initial position in ankle joints on the muscle activity of the quadriceps femoris during reverse Nordic Hamstring Exercise measured using surface electromyography Objectives: The aim of this study is to compare the effect of a different initial position of ankle joints on the muscular activity of the m. quadriceps femoris during performing rNHE, which can be recorded by surface electromyography. Methods: Two variants of the initial position of the ankle joint were performed during the rNHE exercise. The first variant was performed with dorsal flexion in the ankle joint and the second variant was performed with plantar flexion of the ankle joint. Overal 33 probands were selected for this research. The selection was intentional due to the nature of the study and it participants represented a healthy population. Each variant of the rNHE was performed 3 times, the duration of one repetition was 3 s, the angular velocity was 30 ř / s. Muscle activity of the rectus femoris, lateral vastus muscle and medial vastus muscle was measured using surface electromyography. Results: The results demonstrate the effect of a change in the initial position of the ankle joint on the muscle activity of the quadriceps femoris muscle during the reverse Nordic Hamstring Exerice. We recorded an...
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The comparison of mucle contraction speed using the "TheraGun" and sports massage
 Michal, Lukáš ; Nováková, Pavlína (advisor) ; Šteffl, Michal (referee)
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