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Comparative analyses of muscle activation lower extremities during running at different surface
Král, David ; Bačáková, Radka (advisor) ; Hojka, Vladimír (referee)
Title: Comparative analyses of muscle activation lower extremities during running at different surface. Objectives: The aim of this bachelor's thesis is to compare the level of activation of selected muscles of the lower extremities and the relative timing of these activations. Realize measurements on three types of surface: tartan, grass, sand and find out the differences in activations of selected muscles according to the surface. Methods: In this thesis, we used the method of analysis and the method of comparison. We applied the analysis method in the analysis of the measured signals for the running step and the comparison method in the section comparing average running step cycles from different surface types. Results: We found out that running on the tartan, acitvates all the monitored muscles in more than 75% of the average cycles within 10% of the running step time period. For tartan, grass and sand, we researched that the order of activated muscles is different, although the starts of activation are not different in time from each other within one stride cycle. On the tartan, the activation of the tibialis anterior and peroneus longus muscles in both lower ewtermities is comparably same long as in the heads of the gastrocnemius. On the sandy surface, a double activation occurred in the...
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Analysis of upper limbs muscles involvement during playing the drums
Štumpfová, Lenka ; Nováková, Tereza (advisor) ; Véle, František (referee)
Title: Analysis of upper limbs muscles involvement during playing the drums. Objectives: The aim of this thesis is to compile information about playing the drums and summerize the most frequent musculosceletal disorders of upper extremities of these musicians. The main aim is analyzing and comparing the involvement of muscles or muscles groups of the right upper limb while drumming. Methods: The theoretical part follows up the given issue as a research and theoretical overview of the current findings based on czech and foreign literature. The practical part is dedicated to evaluation of surface electromyography and 3D kinematics analyses of movements while drumming under specified conditions of one single proband. Results: Results of measurement demonstrate that m. biceps brachii is the most active muscle during playing on hi-hat, snare drum and floor tom with forte dynamics and m. extenzor carpi uln. is is the most muscle active during play with piano dynamics. Wrist flexors were the least active during all measurements. M. extenzor carpi rad. was measured too and its activity was on second place. A close relation between changes of muscles activity and changes of angles of the elbow and wrist have not been established in this study. This research was implemented only with one proband so the...
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Kinesiological study performed Frenchay Arm Test in patients with spastic hemiparesis
KOPECKÁ, Monika
This bachelor thesis is devoted to a kinesiological study of the Frenchay Arm Test in patients with spastic hemiparesis. It is a study focused on the kinesiological analysis of selected items in modified Frenchay Arm Test, which is supplemented with mapping of electrical activity of selected muscles by surface electromyography in patients with spastic hemiparesis before and after botulinum toxin application. The theoretical part describes the different manifestations and forms of spastic paresis. Clinical scales for the assessment of spasticity and treatment options are also presented. The last part is devoted to grip functions and selected tests assessing functional abilities of the hand. One of those listed is the Frenchay Arm Test and its modified version. It is a tool that assesses common activities of daily living. In the practical part, a qualitative research was used. The research sample consisted of two probands with spastic hemiparesis who were indicated for botulinum toxin treatment. Kinesiological analysis was performed on each before and after botulinum toxin application. It included medical history, aspect, palpation, examination of sensation, reflexes and muscle strength, goniometry, spasticity examination according to Gracies and modified Frenchay Arm Test (mFAT). Three items were selected from this test, kinesiologically described in the practical section, in which the activity of selected muscles was mapped by surface electromyography (SEMG). By comparing the results, it was possible to observe the changes in muscle activity that occurred as a result of rehabilitation, botulinum toxin application and the kinesiological performance itself. It has been documented that mFAT is a suitable test for monitoring the effects of therapy in patients with spastic hemiparesis. However, it is important that it is evaluated by experienced therapists and its accurate performance is maintained. SEMG is a suitable method for mapping muscle activity, although the results and their interpretation are limited by the methodology of performance and the processing of the recording.
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Comparative analysis of pelvic girdle muscles and body muscles activation during walking in different types of shoes and barefoot
Hrůzová, Zuzana ; Bačáková, Radka (advisor) ; Pánek, David (referee)
Title: Comparative analysis of pelvic girdle muscles and body muscles activation during walking in different types of shoes and barefoot Objectives: The aim of this thesis is to compare EMG signal chosen muscles of pelvis girdle and trunk while walking barefoot, shod in barefoot shoes or in conventional sport shoes. Methods: In our research there were 9 healthy participants who are used to walking in barefoot shoes attending. Using surface electrodes, the EMG activity of 5 muscles was recorded. The observed movement was walking on grass in conventional shoes, in barefoot shoes and barefoot. The data obtained from the experiment were imported and statistically processed in the MS Excel program with the XLSTAT software installed and in the Jamovi statistical program. ANOVA and unpaired t- test were used for statistical data analysis. Results: Data from the statistical comparison revealed a significant statistical difference in 75 % comparison of maximal muscle activity between walking in conventional sport shoes, barefoot shoes and barefoot in measurement of differences in one subject in all chosen muscles. A statistical significant difference was also found in comparison of maximal muscle activity in 81,43 % measurements between subjects in all chosen muscles while walking barefoot. There was no...
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The effect of starting position in hip joints on the muscle activity of the quadriceps femoris muscle during the Reverse Nordic Hamstring Exercise evaluated using surface electromyography
Šimková, Pavlína ; Nováková, Tereza (advisor) ; Lopot, František (referee)
Title: The effect of starting position in hip joints on the muscle activity of the quadriceps femoris muscle during the Reverse Nordic Hamstring Exercise evaluated using surface electromyography. Objectives: The aim of this study was to determine whether a change in the initial position in the hip joints (in terms of rotation in hip joints) during the Reverse Nordic Hamstring Exercise (rNHE) will cause a change in muscle activity in every part of the quadriceps femoris muscle, which can be recorded by surface electromyography. Methods: Overall 40 participants were selected for this research. The selection was intentional due to the nature of this study and it participants represented a healthy population. They were randomly divided into two groups. All participants started by performing rNHE with a neutral position in hip joints, then (depending on the group they were members of) performed rNHE with internal or external rotation in the hip joints. Each variant of rNHE was performed 3 times and it took 3 seconds to perform this exercise (angular velocity 30 ř per second). During the exercise, the muscular activity of the rectus femoris, the medial vastus and lateral vastus muscles on both lower limbs was measured using surface electromyography. Results: The results show that a change in the starting...
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Electromyographic study of selected neck muscles in patients with torticollis
Pospíchalová, Tereza ; Pánek, David (advisor) ; Malá, Jitka (referee)
Title: Electromyographic study of selected neck muscles in patients with torticollis Objectives: The aim of the study was to determine the electrical muscle activity and the symmetry of the electrical muscle activity of selected neck muscles in patients with torticollis during flexion in three different positions - standing, sitting, lying on the back. Methods: The study involved 8 probands aged 27 - 60 years. The Noraxon TeleMyo 2400T G2 surface electromyography device for telemetry data transmission technology with a sampling frequency of 1500 Hz was used for the measurement. The surface electrodes were applied to five target muscles bilaterally, namely the sternocleidomastoid muscle, scaleni muscles, suprahyoid muscles, infrahyoid muscles and trapezius muscle upper part. Subsequently, the probands performed cervical spine flexion fifteen times in a randomized order of positions in synchronism at the same speed by setting the metronome to 60 bpm. The electrical muscle activity of the examined muscles was used in average %MVC values in comparison right/left, as well as changes in average %MVC values depending on positions and symmetry of electrical muscle activity during neck flexion using Pearson's correlation coefficient. Results: The values of the average %MVC of the contralateral SCM against...
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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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Kinesiolgy analysis of function selected muscles of upper limb after brest augmentation
Víšková, Anna ; Kračmar, Bronislav (advisor) ; Véle, František (referee)
Title: Kinesiologic analysis of function of selected upper limb muscles after female breast augmentation Objectives: The aim of this research is to analyze the functionality and scope of involvement of the injured muscles due to plastic surgical augmentation procedure at pre-selected physical activities before and after surgery a few months later (specifically, three months - the time the patient left the recovery) using a noninvasive surface electromyography (EMG). Methods: A Case Study measuring method of noninvasive surface electromyography in combination with the method of temporal phase shifts involved in the activation of muscle movement, accompanied by a support method of integrated EMG. Results: There differences have been observed in the timing of individual muscles measured during performing selected testing exercises before and after completion of the augmentation plastic surgery operatios. Furthermore, the possibility of the loss of muscle strength has been detected by some measured muscles and this has the potential to take over functions of damaged muscles. Key words: plastic surgery, female breast augmentation, surface electromyography, upper limb muscles, musculus pectoralis major
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Discrimination of EMG signals from individual forearm muscles from surface EMG.
Krásná, Jana ; Otáhal, Jakub (advisor) ; Konopková, Renata (referee)
Title: Discrimination of EMG signals from individual forearm muscles from surface EMG Abstract: Location of electrodes for sensing the forearm muscles using surface electromyography is not accurately described. It is based only on recommendations by various authors in making researches. The aim of this study was to determine the optimal placement of electrodes on the forearm and describe it to another repeatable measurements. By analyzing the amplitude of EMG recording is confirmed not only the optimal location of electrodes, but either suggested muscle synergies that are possible to analyze more deeply in other studies because a detailed examination of muscle synergies are considerable application in upper limb prosthetics Keywords: Surface electromyography, forearm muscles, amplitude analysis
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Kinesiology analysis of the horizontal jump in bike trial
Eibl, Tomáš ; Bunc, Václav (advisor) ; Kračmar, Bronislav (referee)
Title: Kinesiology analysis of the horizontal jump in bike trial Cíle práce: The aim of this thesis is to verify the use of non-specific strength-training funds for the development of horizontal jump in bike trial. Methods: Content analysis of documents Method interview with assistant work Mgr. Marek Jelinek Ph.D. Method interview with the technician when recording data Case Study riders The method of data collection using surface electromyography Data Analysis Data processing software MS Excel - evaluation of differences of values sized muscle action potential in the different types of exercise Synthesis - making inferences and discussions Results: The list of exercises for developing strength abilities of the lower limbs, which are part of non-specific resources and influence the development of the horizontal jump in cyklotrial. Ranking exercises, which are in accordance with the measured values for effective development of horizontal jump in bike trial. The exercises are sorted from highest values aktivity of all muscles: 1st Squat with free weights 2nd Jump from second place 3rd Deadlift 4th Plyometrie 5th High Jump 6th Legpress Key words: Cycling trails, biking, surface electromyography.
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