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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, I used the method of analysis and the method of comparison. I 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: I 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 softer surfaces - grass and sand, my research did not support the hypothesis, that the softer the surface is, the greater are the differences in the activation of individual muscles versus tartan. Further I found out that on sandy and grassy surfaces, the average activation time of the muscles which are more involved in stabilizing the ankle and foot, i.e. tibialis anterior and peroneus longus, increases. On a sandy...
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Conditioning preparation for U15 players at the Czech Hockey Academies
Rendla, Matyáš ; Jebavý, Radim (advisor) ; Hojka, Vladimír (referee)
Title: The conditioning off -ice preparation of ice hockey players up the age of 15 at Czech Hockey academy Objectives: The aim of this study was to investigate and to compare the conditioning off- ice preparation of Czech elite ice hockey players up to their age of 15 with the conditioning programs of elite players from Scandinavian and overseas countries. Furthermore, I aimed to find out how different development systems work and what advantages and disadvantages they have. Methods: To gather data, I created an anonymous non-standardized questionnaire in Czech and English, targeting adult elite ice hockey players. The players were from Sweden, Canada, and the Czech Republic. With a sufficient number of respondents, I divided Czech players into younger and older generations. The questionnaire was distributed through my friends and colleagues, primarily those involved in ice hockey. Respondents answered 11 questions regarding participation in other sports, off-ice training, and PE content until the age of 15. Results: The findings of my research revealed that younger generation of Czech players engaged in another sport up to the age of 11.2(on average), which is more than 2 years less than their Canadian or Swedish counterparts. A similar difference was observed in the duration of supplementary...
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The relationship of explosive strength and CODS performance
Hönig, Karel ; Hojka, Vladimír (advisor) ; Kokštejn, Jakub (referee)
1 Abstract Title: The relationship of explosive strength and CODS performance Objectives: The mainaim of this work is to findout the degrese of relatedness indicators between explosively forceabilities and performance in individual Agility tests for U16 and U17 footballers Methods: Testing and measurementwas performed ona sampleof 32players aged 15-16 from the Bohemians Prague football team. To determine the player's explosive-force abilities, the Kistlerboardwas used in the BEZ laboratory. Agility testing was based on test batteries for this ability (Arrowhead L and P, Illionois, 505 L and R, K-test and Hexagon). The data measurements was processed by using IBM SPSS statistics 22. Results: I have found that theimpact of explosivestrength abilities was most evident in Arrowhead and Illinois CODS tests at R = 0,4 - 0,7 and p<0,05. On the contrary, Hexagon test proved to be independent of explosive-strength abilities. In addition, it was found a small correlation value between 505 test and other CODS tests. Keywords: fitness ability, Agility, CODS, speed, strength, football
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Analysis of academic drop-out rates of FTVS students in the fields of TVS Management and Physiotherapy
Hynek, Vojtěch ; Hojka, Vladimír (advisor) ; Opelík, Daniel (referee)
Title: Analysis of drop-out rates of FTVS students in the Management of TVS and Physiotherapy study programs. Objectives: Main objective of this master theses is to analyse the development of student drop- out and graduation rates in the bachelor's and master's degree programs in Physiotherapy and Management of physical education and sport at the Faculty of Physical Education and Sport in last twelve years based on data from SIMS (Student Information Matrix). Methods: The paper uses the method of analysis of cohort failure rate linked to the year of enrolment and the calculation of graduation rate based on the methodology of calculation of the Ministry of Education, Youth and Sports in the framework of the rules for financing public universities. Results: The academic dropout rate in the monitored programmes varies more over the monitored years. Graduation rate values show more stability. The development in study programmes is different, even for the same types of study programmes. The dropout rate in Bachelor's degree programmes is higher than in Master's degree programmes and so is the graduation rate. Physiotherapy degree programmes have a lower dropout rate than Sports management degree programmes and a higher graduation rate. The Physiotherapy study programmes are among the better ones in...
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Analysis of general physical performance of athletes aged 14 to 15 years in Sports Centres in 2019-2022.
Stoklasová, Lucie ; Vostatková, Pavlína (advisor) ; Hojka, Vladimír (referee)
Title: Analysis of general physical performance of athletes aged 14 to 15 years in Sports Centres in 2019-2022 Objectives: The main aim of this thesis is to investigate whether there has been a significant deterioration in the performance of athletes in the older youth category (14-15 years old) between 2019 and 2022. This period was exceptional in that an extraordinary event occurred in the Czech Republic, namely the outbreak of the COVID-19 pandemic, which halted social life and closed sports clubs. Methods: Microsoft Excel was used to process the data file provided by the Czech Athletic Association. The statistical software IBM SPSS Statistics was used for statistical operations, tests and graphs. In addition, tests of normality, homogeneity of variances and comparisons of results of correlation analyses, analyses of variance and partial post-hoc tests were used. Results: Based on the analysis of the dataset of athlete testing results in the Sports Centres it was found that, between 2019 and 2022, there was a significant deterioration in general movement performance in all categories studied, particularly in the male and female student categories aged 14 to 15 years. Keywords: athletics, testing, lockdown, COVID-19, sports centers, general physical performance
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Immediate effect of posterior chain facilitation using foam rolling on reactive strength performance
Harasimová, Petra ; Hojka, Vladimír (advisor) ; Šťastný, Petr (referee)
Author: Bc. Petra Harasimová Thesis supervisor: Mgr. Vladimír Hojka, Ph.D. Expert consultant: PhDr. Jitka Malá, Ph.D. Mgr. Dominik Kolinger Title: Immediate effect of posterior chain facilitation using foam rolling on reactive strength performance. Objectives: The main aim of this study is to determine whether the inclination of the trunk towards the vertical changes after foam roller facilitation, whether the magnitude of the jump increases or whether the contact time during reactive force performance is reduced. Methods: In this thesis an experiment in the form of a randomized crossover study was used. Fifteen active female athletes with the problem of physiological maintenance of trunk position during running participated in the measurement. Subjects performed repeated snatch jumps over hurdles 57-68 cm in height. For the skip jumps, we measured jump height and support time using an Optojump (Microgate, Bolzano, Italy) and maximal trunk tilt using a video camera (GoPro HERO 9). After the warm-up, probands completed two measurements (pre-test) within 2 minutes. Then, the intervention group of probands performed foam rolling facilitation - m. triceps surae, mm. hamstrings, m. gluteus maximus, m. erector trunci; for each muscle group for 30 s, with a frequency of 1.5 Hz; the control group had rest...
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A comparison of chandge of direction speed and reactive agility in football
Procházka, Vladimír ; Hojka, Vladimír (advisor) ; Kaplan, Aleš (referee)
Title: A comparison of Change of direction speed and reactive agility in football Objectives: The aim of the thesis is to determine the level of skill of football players in agility and change of direction speed. Also to find out whether these two abilities correlate with each other, if the best players in agility also achieve the best results in tests focused mainly on change of direction speed and which components distinguish these two abilities from each other. Method: By using metaanalysis we first define the parameters of individual performance in football, its requirements and needs at the present time, the importance of change of direction speed and agility for football performance. At the same time, we will determine the differences between the environment and preparation of football players in the Czech republic and abroad. I would like to describe here the components and sub-components of performance in agility and finally introduce the differences between tests focused on change of direction speed and reactive agility. Key words: Agility, football, change of direction speed, reactive agility
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Dynamic load during reactive strength tasks
Kováč, Dan ; Hojka, Vladimír (advisor) ; Vindušková, Jitka (referee)
Title: Dynamic load during reactive strength tasks Objectives: Objectives were to explore and measure biomechanic parameters of athletes performing different reactive strength tasks using force plates. Methods: 8 male athletes (22,4 ± 1,2 years; 76,3 ± 4,3 kg) took part in experiment. Each of them performed 8 different reactive strength tasks (alternate and single leg bounds, pogo jumps on place, low hurdle jumps, high hurdle jumps 76 cm and 91 cm and long jump take off from 8 and 12 steps approach). Dynamics of tasks was measured using Kistler 9281 EA with sample rate of 1000 Hz. Main observed parameters were maximum vertical force, time to peak force, contact time and impulse. Data were processed in MATLAB R2022a (The MathWorks, Inc. Natick, Massachusetts, USA) and Microsoft Excel 2019. Results: Differences in dynamics of reactive tasks were observed among single leg and double leg exercises. Double leg exercises had much longer time to peak of vertical force than single leg exercises. Biggest vertical forces were observed during single leg bounds, where overload reached seven times body weight. On the other hand lowest peak of vertical force was measured during long jump takeoff from eight steps approach. Maximal forces got higher and contact time shorter with increased approach speed during...
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Difference of biomechanical parameters in individual categories in javelin throw
Krejnusová, Tereza ; Feher, Jan (advisor) ; Hojka, Vladimír (referee)
Title: Difference of biomechanical parameters in individual categories in javelin throw Objectives: The aim of this work is to determine whether the biomechanical parameters in javelin throw are different between age categories and gender categories. At the same time, this work deals with how much influence the individual parameters affect the throw distance and whether these ratios are the same or different for each category. Methods: During the research, kinematic analysis and video analysis using the Kinovea program were used. Statistical methods such as ANOVA, Tukey's post hoc analysis and hierarchical regression analysis were also used. Results: It was found that of the measured parameters, the value of 8 parameters differs between at least two categories. Only 2 parameters gave an insignificant result, so there are no different values between the categories. Furthermore, it was found that for 3 categories, the net distance has the greatest effect on the rate of estimation. The other selected parameters are only partially identical and there are some differences between the categories.. Keywords: javelin throw, biomechanical parameters, difference, category, ANOVA, hierarchical analysis
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The Effects of neck cooling during intermitent exercise
Čuda, Radek ; Hojka, Vladimír (advisor) ; Baláš, Jiří (referee)
Title: The Effects of neck cooling during intermitent exercise Objectives: The aim of the study was to determine effects of neck-cooling during intermitent exercise on heart rate and heart rate recovery changes, intermitent sprint performance and rating of perceived exertion. Methods: The crossover study design and MBD analysis was used. 19 healthy subjects absolved test consisted of: 4 x 2 min. repeated shuttle run test (HIMS), 1 minute recovery interval for cold pack application on the neck, repeated sprints 10 x 20 m and 2 minute recovery interval for cold pack application on the neck. Results: Neck cooling during intermitent exercise can lower heart rate and improve faster heart rate recovery. Impact on intermitent sprint performance is unclear because of missed data. The rating of perceived exertion is on the same level after neck-cooling. Keywords: neck-cooling, intermitent exercise, HIMS, HRR, MBD
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