|
|
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
|
|
|
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...
|
|
|
The Influence of Footwear on Running Style and Injuries
Kolovecká, Michaela ; Hora, Martin (advisor) ; Soumar, Libor (referee)
In recent years running has become a very popular sport. Therefore it is nowadays often discussed whether it is shod running or barefoot running that is better. The aim of this thesis is to provide a summary of scientific pieces of knowledge on the effect of footwear on running style and related injuries. The introduction chapter describes the basics of running techniques and progressive development of running styles in relation to the development of running footwear. The following chapters describe in detail results of studies about the impact of footwear on kinematics, foot strike pattern and ground reaction forces, muscular activity and the running economy. Other chapters deal with the influence of footwear as a source of running related injuries while the most common running injuries are subsequently analysed. The last part is a practical section. It is a questionnaire study in which in total 93 runners participated. The conclusion summarizes the essential pieces of knowledge on the topic of footwear influence on running style and related injuries which are compared with the results collected in the questionnaire.
|
|
|
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...
|
|
|
Bilateral Asymmetries of Lower Limb's Muscle Activity during Basic Movement of Cha-Cha-Cha dance
Vondrášek, David ; Sládek, Vladimír (advisor) ; Bigoni, Lucie (referee)
1 Abstract The purpose of this study was to describe the degree of bilateral asymmetry of lower limbs' muscle activity in the dance movement Cha-cha-cha and to determine the cause of bilateral asymmetries of lower limbs' muscle activity. Differences in muscle activity of contralateral lower limbs might be caused by the factor of bilaterally asymmetrical movement patterns, the factor of neural pathways or the factor of training. We hypotetize that comparing the direction of bilateral asymmetry in muscle activity between asymmetrical dance movement and its mirror alternative can determine the cause of bilateral asymmetry in muscle activity of lower limbs within the movement. We studied 14 volunteers (7 men, 7 women), all were actively dancing at competitive level. We tested the muscle activity of musculus vastus lateralis (VL), musculus biceps femoris (BF), musculus tibialis anterior (TA) a musculus gastrocnemius lateralis (GL) using surface electromyography. The dance movement Cha-cha-cha was bilaterally asymmetrical in the muscle activity of VL, TA and GL. Direction of lower limbs' muscle activity indicates, that TA, being a muscle responsible for foot movement, might be affected by the factor of neural pathways and brain laterality, while VL and GL might be more affected by the factor of training. Key...
|
|
|
Analysis of muscle activity during steering wheel movement
Dostálová, Veronika ; Vilímek, Miloslav (advisor) ; Horák, Zdeněk (referee)
❆❜str❛❝t ❚✐t❧❡✿ ❆♥❛❧②s✐s ♦❢ ♠✉s❝❧❡ ❛❝t✐✈✐t② ❞✉r✐♥❣ st❡❡r✐♥❣ ✇❤❡❡❧ ♠♦✈❡♠❡♥t ❖❜❥❡❝t✐✈❡s✿ ❚❤❡ ❛✐♠ ♦❢ t❤✐s t❤❡s✐s ✐s t♦ ♣r♦❝❡ss ❛♥ ❛✉t♦♠♦t✐✈❡ ❡r❣♦♥♦♠② ✐ss✉❡✳ ❋✉t❤❡r♠♦r❡✱ t♦ ❛♥❛❧②s❡ ✉♣♣❡r ❡①tr❡♠✐t② ♠♦✈❡♠❡♥t ❛♥❞ ❡❧❡❝tr✐❝❛❧ ❛❝t✐✈✐t② ♦❢ s♣❡✲ ❝✐✜❡❞ s❤♦✉❧❞❡r ♠✉s❝❧❡s ❞✉r✐♥❣ st❡❡r✐♥❣ ✇❤❡❡❧ ♠♦✈❡♠❡♥t ✇✐t❤ ❛ ❞✐✛❡r❡♥t ❤❛♥❞ ♣❧❛❝❡♠❡♥t✳ ❆♥♦t❤❡r ❛✐♠ ✐s t♦ ❝♦♠♣❛r❡ ♠❡❛s✉rr❡❞ ❡❧❡❝tr♦♠②♦❣r❛♣❤✐❝ ❞❛t❛ ✇✐t❤ ❛♥ ♦♣t✐♠❛❧ r❛♥❣❡ ♦❢ ♠✉s❝❧❡ ❛❝t✐✈✐t② ❞✉r✐♥❣ r❡♣❡t✐t✐✈❡ t❛s❦s✳ ▼❡t❤♦❞s✿ ❚❤❡ t❤❡s✐s ❤❛s ❛ ❝❤❛r❛❝t❡r ♦❢ ❛ ♣✐❧♦t st✉❞②✳ ❚❡♦r❡t✐❝❛❧ ❜❛s✐s ❤❛s ❜❡❡♥ ♦❜t❛✐♥❡❞ ❜② ❛ r❡✈✐❡✇ ♦❢ ❧✐t❡r❛t✉r❡ ❞❡❛❧ ✇✐t❤ s✐♠✐❧❛r q✉❡st✐♦♥s✳ ❊①♣❡r✐♠❡♥t❛❧ ♣❛rt ❤❛s ❜❡❡♥ ❝♦♥❝❡r♥❡❞ ✇✐t❤ ❡❧❡❝tr✐❝❛❧ ❛❝t✐✈✐t② ♦❢ s♣❡❝✐✜❡❞ s❤♦✉❧❞❡r ♠✉s❝❧❡s ❛♥❞ ♠♦t✐✲ ♦♥ ❛♥❛❧②s✐s ♦❢ ✉♣♣❡r ❡①tr❡♠✐t② ❞✉r✐♥❣ ❝♦♥tr❛❧❛t❡r❛❧ ❛♥❞ ✐♣s✐❧❛t❡r❛❧ st❡❡r✐♥❣ ✇❤❡❡❧ ♠♦✈❡♠❡♥t ✇✐t❤ ❛ ❞✐✛❡r❡♥t ❤❛♥❞ ♣❧❛❝❡♠❡♥t✳ ❖♥❧② t✇♦ s✉❜❥❡❝ts ❤❛s ❜❡❡♥ ❝❤♦s❡♥ ❞✉❡ t♦ ❛ t❡❝❤♥✐❝❛❧ ❞✐✣❝✉❧t② ♦❢ ❡①♣❡r✐♠❡♥t✳ ❚❤❡ ❡❧❡❝tr✐❝❛❧ ❛❝t✐✈✐t② ♦❢ ♠✉s❝❧❡s ❤❛s ❜❡❡♥ ❛♥❛❧②s❡❞ ✇✐t❤ s✉r❢❛❝❡ ❡❧❡❝tr♦♠②♦❣r❛♣❤②✳ ❚❤❡r❡ ❤❛s ❜❡❡♥ ♠❡❛s✉r❡❞ ❢♦❧❧♦✇✐♥❣ ♠✉s❝❧❡s✿ ♠✳ ❞❡❧t♦✐❞❡✉s ♣❛rs ❛♥t❡r✐♦r✱ ♠✳ ❞❡❧t♦✐❞❡✉s ♣❛rs ♠❡❞✐❛❧✐s✱ ♠✳ ♣❡❝t♦r❛❧✐s ♠❛❥♦r ♣❛rs ❝❧❛✈✐❝✉❧❛r✐s ❛ ♠✳ tr✐❝❡♣s ❜r❛❝❤✐✐ ❝❛♣✉t ❧♦♥❣✉♠✱ ♠✳ ♣❡❝t♦r❛❧✐s ♠❛❥♦r ♣❛rs st❡r♥♦❝♦st❛❧✐s✱ ♠✳ ❜✐❝❡♣s ❜r❛❝❤✐✐✱ ♠✳ ❞❡❧t♦✐❞❡✉s ♣❛rs ♣♦st❡r✐♦r✱ ♠✳ ✐♥❢r❛s♣✐✲ ♥❛t✉s ❛ ♠✳ tr✐❝❡♣s ❜r❛❝❤✐✐ ❝❛♣✉t ❧❛t❡r❛❧❡✳ ❚❤❡ ❡❧❡❝tr✐❝❛❧ ❛❝t✐✈✐t② ♦❢...
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
guest ::
