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Profile of youth footballers as goalkeepers
Zvoníček, Matěj ; Gryc, Tomáš (advisor) ; Bujnovský, David (referee)
Title: Profile of youth footballers as goalkeepers Objectives: The objective of this study was to compare selected parameters of body composition, level of static postural stability and level of lower extremities explosive strength between male and female goalkeepers in soccer and between selected age categories. Methods: A total of 33 male (n = 22) and female (n = 11) soccer goalkeepers participated in the study. They were divided into six test groups based on gender and age category (14-15, 16- 17 and 18-19 years) for performance assessment. These groups were assessed for basic anthropometric data (body height and weight), body composition parameters (% body fat, fat free mass), and level of static postural stability (deviations of the total center of pressure path) in four types of stands (narrow stand open eyes/closed eyes, right/left lower limb stand) and lower extremities explosive strength (jump height, relative force impulse, relative maximum force produced) in four types of jumps (counter movement jump free arms, counter movement jump, squat jump, drop jump). We used a Tanita MC-980MA bioimpedance device (Tanita Corporation, Japan) to assess body composition parameters, a Footscan pressure plates (RSscan International, Belgium) to assess postural stability, and a KISTLER 8611 force plates...
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Relationship between long-term compensatory exercise intervention and strength-speed parameters in young football players
Pavlík, Michael ; Hráský, Pavel (advisor) ; Nováková, Pavlína (referee)
Title: Relationship between long-term compensatory exercise intervention and strength- velocity parameters in young football players Objectives: Based on the diagnostic examination, compile a compensation program for the intervened group in order to improve the functional state of the locomotor apparatus and monitor whether this intervention is reflected in the performance in the given motor tests that test the strength-speed abilities of the players Methods: The "20-m linear sprint test" was used to measure linear speed and acceleration, which was measured using time photocells (Witty Timing System). In this test, the average times of all groups were monitored at distances of 5, 10, 20 m. Furthermore, with the help of photocells, a 505 agility test was measured to determine the speed of the players' change of direction. The last test was "Standing broad/long jump" measured by the method (Laser-method measurement SDJ) using a laser optical range finder (Mestek GR20). To determine the normality of the data, the Shapiro-Wilk test was used, the results of which do not reject the normality of the data. For statistical analysis was used paired T-test data between individual measurements in individual groups. MS Excel and Jamovi software were used for recording data and their subsequent analysis....
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The effect of weight manipulation on physical performance in combat sports
Nesvadba, Vojtěch ; Třebický, Vít (advisor) ; Omcirk, Dan (referee)
Author: Bc. Vojtěch Nesvadba Title: The Effect of Weight Manipulation on Physical Performance in Combat Sports Objectives: To assess the effect of rapid weight loss and rapid weight gain on strength and to assess the effect of rapid weight loss on health biomarkers. Methods: A total of 19 full-contact combat sports athletes participated in this study and underwent a 7-day period of intentional rapid weight loss, resulting in 5% loss of their initial body weight. Subsequently, within two hours, they regained 2.6% of their body weight. To assess the effect of this rapid weight manipulation, we employed a comprehensive battery of isometric, dynamic, and anaerobic tests to measure the strength-related abilities and body composition (before rapid weight loss, after rapid weight loss and after rapid weight gain). Furthermore, we monitored the hydration status throughout the study using diagnostic strips. The participants also completed a series of purpose-specific questionnaires. Results: In the condition after rapid weight reduction, we observed statistically significant decrease in the maximal isometric strength of the left knee flexors, maximal explosive strength of the upper and lower extremities, and a statistically significant decline in the hydration status of the participants. In the condition...
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Comparison of explosive power in elite youth soccer players.
Horizral, Peter ; Bujnovský, David (advisor) ; Vampola, Jindřich (referee)
Title: Comparison of explosive power in elite youth soccer players Objective: The objective of this thesis was to determine the level of difference in selected parameters of the explosive strength of the lower limbs of elite youth soccer players between the age categories U14 and U15. Methods: The research set of this diploma thesis consisted of a total of 39 elite youth football players in the age category U15 and U14, who at the time of the test were players of the highest domestic football competition. The research group consisted of players of all playing positions (goalkeeper, defender, midfielder, forward). To analyze selected parameters of the explosive power of the lower limbs, a total of three types of vertical jump were used in laboratory conditions: vertical jump from a squat (English "squat jump"; SJ), vertical jump without arm swing (English "counter-movement jump; CMJ) and jump long jump ("broad jump" in English; BJ). The following parameters were analyzed: vertical jump height (cm) and long jump length (cm). Results: Statistical analysis found significant differences (p < 0.01) between monitored parameters. The analysis found a significant difference (p < 0.01) between squat vertical jump (SJ) and non-arm swing vertical jump (CMJ) height between the U15 and U14 groups. Older U15...
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The possibilities of influencing strength of lower limbs in fire sport competitors
Miřátský, Petr ; Gryc, Tomáš (advisor) ; Jebavý, Radim (referee)
Title: Possibilities of influencing the lower limbs force in fire sport competitors Objectives: The goal of the thesis is to find out the level of force and explosive force in chosen fire- sportsmen's lower limbs and to verify the possibilities of influencing its level with the help of a specific plyometric training. Methods: The research group consisted of fire-sportsmen whose level of muscle force and lower limbs explosive force was explored with the help of entrance tests. To find out the level of the lower limbs muscle force we used the Cybex machine, the level of the explosive force was tested on the Kistler force boards. We assessed muscle force of knee flexors and extensors, which was evaluated with the help of the moment of muscle force (circular motion) in a concentric muscle activity at an angular velocity 60ř·s-1 . In explosive force, we assessed maximum force and upward leap height produced. After the entrance tests the sportsmen went through an intervention programme consisting of a specific plyometric exercise. This intervention programme was concluded with an output testing, which was identical with the entrance one and the aim of which was to find out the current level of the parameters assessed. Results: The result of the thesis is a record of a muscle force and a lower limbs...
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Acute effect of warm-up on the force of a punch
Rudolf, Jan ; Pavelka, Radim (advisor) ; Zdobinský, Adam (referee)
Title: Acute effect of a warm-up on the force of a punch Objectives: The aim of this diploma thesis is to test whether a warm-up before a performance affects the force of a punch at a sample participants practicing full-contact combat sports. Further goal is to analyze a change in the force of a punch depending on elapsed time after warming up. Methods: Each participant in this experimental study with intra-subject design went through all phases of the measurement, where the force of a punch was tested in four specified times (before a warm-up and then 4, 10 and 25 minutes after the warm-up). Results: No statistically significant effect of a warm-up on the force of a punch was observed, nor was there a statistically significant change in the force of a punch during the time following a warm-up. However, a warm-up did have a significant effect on change in heart rate and body temperature. Keywords: Combat sports, performance, fight, dynamic stretching, explosive power, punch sensor
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Local and global effect of sub-maximal squat on post-activation enhancement of muscle power output
Kolinger, Dominik ; Šťastný, Petr (advisor) ; Hojka, Vladimír (referee)
Title: Local and global effect of sub-maximal squat on post-activation enhancement of muscle power output. Objectives: The aim of this thesis is to determine whether the phenomenon of post-activation performance enhancement (PAPE) manifests locally or globally in terms of improved muscle power output. That is, to determine whether activation of a complex muscle chain will lead to improvements in the muscle power output of other muscle groups and muscle groups included in the activated muscle chain. In this way, to indicate the relationship between global and local physiological mechanisms causing PAPE. Methods: The quasi-experimental method and the method of analysis were used in this work. Eleven basketball players aged 18-28 years completed two measurements in random order. The measurements started with a non-specific warm-up followed by a pre- activation test (pre-CA) to obtain baseline values. Next, the players performed a specific warm-up and activation exercise (CA) in the form of a squat with an intensity of 2 × 4 × 90 % of one repetition maximum (OM) with a rest interval of 3 min. After the activation exercise, post-CA values were measured at minutes 5, 8 and 11 on force plates and at minutes 6, 9 and 12 on an isokinetic dynamometer (IKD). Pre-CA and post-CA test of the protocol one...
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Analysis of the explosive power of the lower limbs during the racing period of junior national downhill skiing team
Havel, Jan ; Jebavý, Radim (advisor) ; Jindra, Matouš (referee)
Title: Analysis of the explosive power of the lower limbs during the racing period of junior national downhill skiing team. Objectives: The main aim of this thesis is to determine the possible difference between the level of explosive power of the lower limbs before the racing period and just before the end of the racing period in junior downhill skiing team. Methods: In a double measurement, 10 skiers (n=10) were measured for differences in explosive power levels by using specially made test battery before the start of the racing season (December 2020) and after the end of the season (April 2021). Output measure values were compared to input values and the significance of gains or losses in scores on the output measure was assessed using a reliability test. Results: Over half of the comparisons were substantively significantly better between the input and output measurements. Keywords: force, explosive force, skiing, comparison
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Power tonisation in women's softball
Pfeifer, Jan ; Jebavý, Radim (advisor) ; Feher, Jan (referee)
Title: The force toning in women's softball Objectives: The aim of this study was to demonstrate post-activation potentiation (PAP) following the muscle toning during the strenght training. The toning effect on upper limb explosive force was analyzed following application of two different degrees of resistence. Methods: In this study, we applied randomized selection for the subject to minimize the effect of possible ambiguities such as gender, training status, and player maturity. A homo- -geneous group of well-trained women with the most developed technical response was accepted. (Czech national team, Women's softball). We used the contrast method, where the data were analyzed to determine the effect of different resistance degrees and a fixed rest interval for the strength-dynamic exercise. It is a sticking out of medicine ball in sitting position, which was performed by women of the highest player level. The measurement was processed by using the direct method of dynamic efforts. We compared the explosive force with a medicine ball sticking forward in relation to the distance of the sticking medicine ball by the tested person. Results: The measurement has shown that the PAP generated by toning protocol has a sig- -nificant impact on enhancing the response in explosive drills. The exercise for...
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The effect of the winter preparation period torwards the explosive power in amateur football players
Bébr, Milan ; Jebavý, Radim (advisor) ; Kokštejn, Jakub (referee)
Title The effect of the winter preparation period torwards the explosive power in amateur football players Objectives To find out what efect has preparation period on explosive power of lower limbs at football players of the regional championship level. Methods Quantitative research was held as a motorical testing of football team Sokol Kolovraty (n = 20) during winter preparation period. To determine the development of explosive power of the lower limbs was selected 5 motoric tests: High jump from the spot, Four jump from foot to foot, Long jump from the spot, Triple jump on the left (right) leg, Deep forward bend in standing position. This study was so-called "cross over" study, or as crossover study in which the team was divided by randomization info two groups, group A and a group B. The first half of the study (4 weeks) the group A performer strength intervention and the group B a different running intervention. In the middle of the research, after control measurements, the group exchanged their intervetnions. Results Based on the Mix-design ANOVA I can state the results showed the statistical significance of strength intervention compared to running intervention without strength exercise. In all test fot the explosive power of the lowe limbs the positive changes occurred during the strength...
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