National Repository of Grey Literature 30 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Consequences of injuries on stability in ballet
Foltmanová, Kateřina ; Bunc, Václav (advisor) ; Kubový, Petr (referee)
Title: Consequences of injuries on stability in ballet Objectives: The main aim of the study was to find out if injuries in the ankle and foot have a negative impact on dancers' postural stability. If so then the secondary objective of this study was to see if the injury of one leg affects also the stability of the other in a one-leg stand. Methods: First part of this thesis is a systematic review. The other part is quantitative research in a prospective, cross-sectional design study. Stabilometric data from all 24 female subjects were analysed and injured and uninjured dancers were compared. The data were measured by a FootScan pressure plate (RSscan International, Belgium). Tested positions were bipodalic stance with eyes opened and closed, bipodalic calf raise (relevé) and monopodalic stance on both legs. Results: The aims of the thesis have been fulfilled but both the hypothesis have been rejected. The results have shown better stability in injured dancers to non-injured dancers in three parameters - Total Travel Way of the centre of pressure (COP) in monopodalic stance on the right foot, mediolateral movement of COP in bipodalic stance with eyes opened and calf rise (relevé). No significant differences have been shown between dancers with one leg previously injured and the non-injured ones in...
Strategy of posture stabilisation in stand on unstable base and under application of container with water
Láncz, Lukáš ; Lopot, František (advisor) ; Kubový, Petr (referee)
Title: Strategy of postural stabilisation using unstable surface and water barrel. Objectives: The aim of this study is to investigate the level of muscle actiavtion of choosen muscles during lunge on unstable surface or with using water barrel. Investigation of the postural strategy used during lunge orn unstable surface or with the water barrel and creation of methodology for measurment and data analysis. Methods: Into this pilot study, there were picked 5 people (athletes). Data for outcomes where used from 3 athletes. The measurement of level of muscle activation were done by surface electromyography over gluteus medius muscle and musculi multifidii bilaterally.For data procession was used software Origin 2012 Postural stability was measured through force plates by Kistler and gained data were procesed by using software programmes Bioware, MS Excel and Matlab. For data analysis from EMG measurement was used simple comparasion of outcomes. Stabilometry outcomes were analysed by statistical methode t-test. Results: The results indicate greater level of muscle activation during lunge with aquabag than lunge on unstable surface for most of the measured muscles. The only exception, where level of muscle activity was higher, was multifidi muscle on rear leg. Another outcome proved that the postural...
Effect of strength training on postural stabilisation
Klein, Juraj ; Lopot, František (advisor) ; Kubový, Petr (referee)
Title: Effect of strength training on postural stabilisation. Objectives: The main objective of the theoretical part of the thesis was to summarize the knowledge concerning postural stabilization, strength training and possibilities of postural stability evaluation. The aim of the practical part was to find out what is the effect of strength training on postural stabilization. Methods: The thesis was measured in the premises of the Laboratory of Biomechanics FTVS UK in Prague and was attended by 10 probands. Participants underwent a four-week training plan to develop general strength abilities. We evaluated the impact of strength training by our provocation test and its 3D kinematic analysis using Qualisys optical system. The measurement consisted of an input part before the intervention and an output part after the intervention. The measured values were analyzed in Qualisys Track Manager and then transferred to Microsoft Excel, where they were evaluated and compared. Results: The results showed a significant difference between input and output measurements of postural stabilization. There was a significant improvement in stabilization after four weeks of training, with a noticeable improvement in stabilization on the lower left limb. Properly selected strength exercise has a positive effect on...
The effect of footwear on walking and running of patients with an amputation
Bešťák, Jiří ; Lopot, František (advisor) ; Kubový, Petr (referee)
Author: Jiří Bešťák Title: The effect of footwear on walking and running of patients with an amputation Objective: The main objective of this bachelor thesis is assess the effect of footwear on prosthetic gait and make view of this theme. The thesis is focused on anterior posterior ground reaction force and its changes with variations of footwear. Methods: Four probands (one woman, three men) with transtibial and transfemoral amputation participated at the study. Their age was 20 to 60 years during the study. A condition for inclusion in the study was people with transtibial/transfemoral amputation, degree of activity greater than two, absence of subjective symptoms, traumatic injury. The issue is one-time measurements in the extreme load laboratory at FTVS UK. Kinematics dats from the Kistler force plates are subject to measurements. The obtained data were exported from Qualisys Track Manager software througt the text document into MS Excel. The data were appropriately adjusted for subsequent processing and evaluation in MATLAB. The resulting data were compared individual. Results: The results demonstrated that flat shoe did not affect anterior posterior ground reaction force. Barefoot gait rather did not affect anterior posterior ground reaction force. Gait on hiking shoe rather affected anterior...
Effect of Barefoot shoes on the footprint loading
Vacková, Zuzana ; Lopot, František (advisor) ; Kubový, Petr (referee)
Author: Bc. Zuzana Vacková Title: Effect of Barefoot shoes on the footprint loading Objectives: The aim of this experiment is to evaluate if barefoot shoes affect the size of vertical component of contact force during walking on a smooth non- abrasive surface during normal conditions. Furthermore to find out which parameters can be used to monitor the degree of convergence foot behaviour during the stance phase of gait cycle with the barefoot and barefoot shoes. Methods: Seven probands (4 women, 3 men) aged 23 to 25 years participated at the study. The dynamic gait parameters (reaction forces from the pad) were measured using Kistler force plates in the extreme load laboratory at FTVS UK. Probands after introduction to the experiment went repeatedly over the power plate subjectively comfortable speed. The first measurement were done while walking in the barefoot type of shoes. The second measurement was barefoot walking. It was a one-time measurement. The obtained data were exported from BioWare® program into MS Excel. The final data processing was carried out in the MatLab program, where the necessary graphs of reaction forces and their evaluation were created. Results: All contact forces and their resultant and CoP coordinates were recorded during measurements. Only the vertical contact force...
Theoretical preparation for the Comparison of efficiency of selected types kayaking paddles in forward stroke.
Vašina, Jiří ; Bílý, Milan (advisor) ; Kubový, Petr (referee)
Title: Theoretical preparation for the Comparison of efficiency of selected types kayaking paddles in forward stroke. Objectives: Objetcive for this study is to make a research study for paddle blade force expereminet by searching and treatment of studies which aim on similar topic. Methods: Research and treatment of foreign and czech studies. The information has been achieved trought combination of the direct, indirect and progressive methods. Conclusion: Parts of the study contain a treatment of foreign and czech studies with theoretical preparation for next experiment. Keywords: Biomechanics, strain gauge, slalom paddle, stroke, hydrodynamics
The influence of the surface load distribution of the foot during dynamic movement in tennis
Šebíková, Linda ; Maršáková, Kateřina (advisor) ; Kubový, Petr (referee)
Title: The influence of the surface load distribution of the foot during dynamic movement in tennis Objectives: The aim of this work is to determine whether there is a change in the force load in the area of the sole of the foot during the forehand strike phase in an open position depending on the type of playing surface. Methods: The research was attended by 10 level I tennis players of ranging from the age of 17 to 28. Each of the players has played tennis for at least two years, train 2 - 3 times a week and has no limb injury in the past 12 months. Using the Pedar-X instrument, changes in the force of the plantar load during the forhend strike phase on clay and Casali surfaces were measured. To evaluate these changes, the contact forces [N] (vertical reaction forces) were measured. First, an intra-individual foot impact assessment on the heel region and forefoot on the clay and Casali surface were performed using graphs of temporal force averages. Secondly, an inter-individual evaluation of the maximum force values in the region of the heel, midfoot, forefoot, hallux and lesser toes and whole feet of the foot was performed using the paired t-test statistical method. Results: The results of the work show that the different surfaces influence the size of the load as well as its plantar...
Acute effect of static and dynamic stretching on vertical jump
Dostálová, Anna ; Lopot, František (advisor) ; Kubový, Petr (referee)
Title Acute effect of static and dynamic stretching on vertical jump. Objectives The aim of this thesis is to assess whether it is better to warm up by static or dynamic stretching in order to improve performance in the vertical jump. Methods The first part of this thesis is theoretical and is the basis for measurement, which is described in the second part. The tested set consists of ten women volleyball players. Each player underwent three vertical jump measurements on power plates Kistler, which recorded flight time of the player over the plates. All measurements were evaluated afterwards. Five attempts were recorded in each measurement. Measurements were carried out without stretching, after dynamic stretching and after static stretching. The thesis includes a survey that monitors the perception of the players` performance. Results Results of the total tested set measurement show that inclusion of dynamic stretching during the warm up leads to a slight decline in the physical performance. This decrease presents about 0.92%. Another conclusion of this research is that the inclusion of static stretching to the warm up also results in a slight decrease in the athletic performance. In this case the decrease is about 1.72%. In a direct comparison of these two types of stretching, the inclusion of...
Refine the prediction process for the software Combatfit
Štefanský, Michal ; Michalička, Vladimír (advisor) ; Kubový, Petr (referee)
Title: Refine the prediction process for the software Combatfit Aim: Find more accurate method to predict for the need of software Combatfit. Compare software prediction with field measurements and suitable alternative for predicting. The methods used: The thesis is empiric - teoretic research and it is consist of two parts. 1) Teoretic part - analytic work 2) Empiric part - metodologic study Results: The nomogram was chosen as a suitable way of prediction. The research was realized at 3 km, 8 km and 10 km on track in the field. The measured times were used to compare the predicted time by software Combatfit with time prediction according to the nomogram. It was found that the nomogram predictions outperforms software Combatfit. Furthermore it was determined tightness of the relationship between predicted and measured time in either process. The tightness of the relationship with the nomogram was very high up to absolute. The tightness of the relationship with the software Comatfit was moderate. This statement applies to test files that was used. It is not entirely clear whether this would achieve the same conclusions for other performance groups. Key words: Software Combatfit, prediction of performance, movement, external conditions, nomograme.
Impact of gear and weaponry on posture in kneeling shooting position
Zdražila, Václav ; Vágner, Michal (advisor) ; Kubový, Petr (referee)
Title Impact of gear and weaponry on posture in kneeling shooting position Objectives The aim of this thesis is to find out the impact of gear and weaponry on posture in the kneeling shooting position. Specifically, this study examines the influence of carried load on posture, aiming stability and balance in the high and low kneeling shooting position variants. Methods This thesis has an empirical observational character. The shooting position was tested by Qualisys camera system and Kistler pressure plates. The measurment was performed on 16 Military department students with mean age of 23 years (standard deviation 2,63 years). Measurements were carried out in four levels, with no load, light load of 15 kg, mean load of 30 kg and heavy load of 45 kg. The measurement was performed on high kneeling variant and the low variant with elbow supported by the front knee. Intra-individual comparison of the results of each level was determined by a T-test. Results: The load in a form of gear and weapony had a statisicaly significant - negative influence on the kneeling shooting position posture. Gear and weaponry used for this study caused a lower trunk position, increased shoulders angle in the low variant, lesser aiming stability and balance control in the position. The bigger was the weight of gear and...

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