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Gait analysis using EMG signals
Korčáková, Ivona ; Janoušek, Oto (referee) ; Koťová, Markéta (advisor)
This bachelors thesis is focused on the analysis of gait using EMG signals. It includes the physiology of a muscular system, with a focus on the lower limb. Bipedal walking consist of ste system that are described and explained also with the movements of the joints. Another chapter is dedicated of Electromyography and this application to the walk analysis. This thesis also includes designing a custom program enabling dataprocessing. Thi final chapter focuses od the data processing. The final chapter focuses on the data analysis and its evaluation.
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Affect of standing frames on muscle activity of lower extremities
Oravová, Pavlína ; Ronzhina, Marina (referee) ; Kolářová, Jana (advisor)
Bachelor thesis is focused on affect of standing frames on muscle activity of lower extremities. It deals with problematics of electromyography and signal processing. It follows up measuring EMG signal via wireless electrodes Wave Plus on verticalization equipment Balance Trainer and muscles of the lower extremities physiology, which were picked up for practical part of measurement. Part of this thesis is measuring protocol. Futhermore, the captured data is processed by programming interface MATLAB and evaluated in discussion.
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EMG analysis of the hip joint muscles in runners with iliotibial band syndrome
Procházková, Kateřina ; Nováková, Tereza (advisor) ; Žáková, Lenka (referee)
Title: EMG analysis of the hip joint muscles in runners with iliotibial band syndrome Objectives: The main aim of this thesis was to analyse bilateral difference in activity of the hip joint muscles in runners with iliotibial band syndrome. Second aim was also to determine the role of limb dominance in the formation of ITBS. Methods: Twenty-two runners with ITBS underwent EMG muscle testing. M. tensor fasciae latae, m. gluteus medius and m. gluteus maximus were tested during dynamic movements on one lower limb. These included squat, vertical jump and jump off the box. Results were expressed as a percentage of maximal voluntary isometric contraction (MVIC). Results: The results indicate a significantly higher activity of the gluteus maximus muscle on the affected lower limb (41.55%) compared to the unaffected (27.50%) during the box jump exercise (p= 0.00926). The m. tensor fasciae latae and m. gluteus medius muscles did not show significant bilateral asymmetrical activity. The results did not show a connection between the dominant lower limb and the side of the ITBS formation. Keywords: iliotibial band syndrome, ITBS, running biomechanics, electromyography, EMG, m. gluteus medius, m. tensor fasciae latae, m. gluteus maximus, lateral knee pain, tractus iliotibialis, long distance runners
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Electromyographic Analysis of the Different Handlebars Grips Effect on the Shoulder Blade Fixators
Hrdlička, Vít ; Pánek, David (advisor) ; Pavlů, Dagmar (referee)
Title: Electromyographic Analysis of the Different Handlebars Grips Effect on the Shoulder Blade Fixators Aims: The main objective of this thesis is to carry out a methodological study on the impact of different handlebars grips on the shoulder blades fixators. Result of the grip change is not only reduction of the upper fixators activity and the increase in the lower fixators activity but also co-contraction index increase and muscle fatigue reduction. Based on the hypothesis we assumed that the highest activity rate of the lower blades fixators and the lowest activity rate of the upper blades fixators will be during the handlebars brakes grip. The highest co- contraction index will occur during the handlebar brakes grip and the maximum muscular fatigue will occur during the grip at the top of the handlebars. The first part of the thesis is focused on the literature search and facts retrieval pertaining to the studied issue. In the second special part of the thesis we conducted a research during which the muscle activity of the upper and lower blade fixators was recorded. Three different handlebars grips were considered during the measurement using the cycle ergometer. Methods: Muscle activity was scanned and recorded using surface EMG. Maximal voluntary contraction of selected muscles based on...
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Analysis of muscle activity during steering wheel movement
Dostálová, Veronika ; Vilímek, Miloslav (advisor) ; Horák, Zdeněk (referee)
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Swimming technique of physicaly disabled swimmers with unilateral above-knee amputation
Čuříková, Lada ; Süss, Vladimír (advisor) ; Jandová, Soňa (referee) ; Fořterová, Petra (referee)
Headline: Swimming technique of physically disabled swimmers with unilateral above-knee amputation Aim of the Thesis: The aim of this thesis is to describe the intra-individual differences in the swimming technique of unilateral above-knee amputees by measuring the EMG of selected muscle groups. Methods: Surface EMG measurement in combination with using synchronized video recordings. Results: Research of the observed swimmers with unilateral above-knee amputation showed that: when swimming the front crawl, the swimmers unequally balance the intense kick of right and left leg mainly using the abdominal muscles and subsequently also in the electric potential of different sizes in other observed muscles; when swimming the backstroke, the upper body muscles on the side of amputated limb do not show any different activity than the muscles of the opposite side; when swimming the breaststroke, the main propulsion muscle for locomotion through the shoulder girdle - m. latissimus dorsi is activated for a longer period of time on the side of amputated limb; thereby, electrical activity of the selected muscles is not symmetrical in the timeline. Key words: swimming step, swimming, above-knee amputation, electromyography, muscle activity, handicap, EMG.
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Differences in muscle activity at different resistance 1RM and 4RM
Machura, Martin ; Šťastný, Petr (advisor) ; Petr, Miroslav (referee)
Title: Difference in muscle activity during 1RM and 4RM bench press. Objectives: The aim of this thesis is to compare the muscle activity of triceps brachii (TB), latissimus dorsi (LD), anterior deltoideus (AD), posterior deltoideus (PD), pectoralis major pars sternalis (PMS) and pectoralis major pars clavicularis (PMC) during the bench press with the maximal load (1 repetition) and the submaximal load of 4RM (4th out of 4 repetitons) and to determine the differences in the muscle activity between three different phases of the concetric part of the movement. Methods: This thesis utilizes the method of randomized experiment and the method of analysis. The data of muscular activity during the bench press with the maximal and submaximal load and different phases of the concentric part of the movement were obtained in the biomechanical laboratory using the randomized experimental approach. The subjects of this study were 19 men (20-28 years old). The method of analysis was used for evaluation of the data with utilization of the basic descriptive statistics and analysis of hypothesis with the T-test. Results: The results of this study are significant (p<0,05) differences in the activity between muscles involved in the bench press exercise with the maximal load (1st repetiton) and the submaximal load of...
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Muscle activity in sticking region during flat bench press
Kopecký, Václav ; Šťastný, Petr (advisor) ; Petr, Miroslav (referee)
Title: Muscle activity when surpassing the sticking region in the concentric phase of a bench-press Objectives: The aim of this work is to compare muscle activity of prime movers and stabilizing muscles in each region of the concentric phase in a bench- press (pre-sticking, sticking and post-sticking phase). Methods: To get all the necessary data a method of randomized experimental research was used in preset laboratory conditions. Afterward a method of analysis was used for data evaluation. Results: Neuromuscular fatigue had occurred at submaximal (4 RM) loads in the primary movers during the sticking and post-sticking phase. In case of maximal (1 RM) loads the hypothesis was rejected due to that fatigue had occurred later, during post-sticking phase. Furthermore a neuromuscular fatigue of stabilizing muscles during maximal (1 RM) and submaximal (4 RM) loads was found. Keywords: bench-press, sticking region, sticking point, electromyography, EMG, muscle activity, resistance training
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Comparative of muscle activity during the cycling step with the use of clipless and normal pedals
Nováková, Martina ; Kračmar, Bronislav (advisor) ; Pánek, David (referee)
Title: Comparative of muscle activity during the cycling step with the use of clipless and normal pedals. Objectives: Diploma thesis objective is to compare muscle activity during pedaling cycle with/without clipless pedal. Using EMG we want to establishe, if 6 chosen muscles are showing significant involvement difference for pedaling with/without clipless pedals. Methods: It is combination of empirical - theoretical thesis. Our work consists of intra- and interindividual comparative analytical study. We used two comparative methods for EMG signal evaluation - Pearson correlation coefficient and comparison with use of signed area of the region bounded by its graph. Results: The results of the correlation analysis show a high degree of compliance of the average normalized envelope diagrams for a cycling step with and without clipless. Based on the comparison of areas under the EMG curve, there is no higher muscle activation potential for the classic pedal. Keywords: cyclist, pedal, cycling step, muscle aktivity, electromyography
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Reconstruction of the influence of grinding technology on upper limb muscle activity
Struška, Michal ; Sládek, Vladimír (advisor) ; Hora, Martin (referee)
Interpretation of changes of humeral asymmetry during the Holocene period was based on the analysis of upper limb muscle activity during cereal grinding using the saddle quern and rotary quern. The aim of the diploma thesis was to test if the dominant upper limb muscle activity during cereal grinding using the saddle quern and rotary quern might be estimated by measuring the activity of musculus deltoideus (pars clavicularis), musculus infraspinatus, musculus pectoralis major and musculus triceps brachii (caput longum). Using surface electromyography, we have analyzed activity of musculus biceps brachii, musculus deltoideus (pars clavicularis), musculus deltoideus (pars acromialis), musculus deltoideus (pars spinalis), musculus pectoralis major, musculus infraspinatus, musculus triceps brachii (caput laterale) and musculus triceps brachii (caput longum) during cereal grinding using the saddle quern and rotary quern in 25 subjects. Consistent with our prediction, musculus biceps brachii was the least active muscle during saddle quern grinding and clockwise rotary grinding, therefore it is possible to exclude musculus biceps brachii from the sample of analyzed muscles. Pars clavicularis, pars acromialis and pars spinalis of musculus deltoideus were more active during rotary quern grinding than...
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