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Measurement of Vehicle Suspension Parameters during Driving
Huf, Jiří ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This bachelor thesis deals systems and procedures for measuring properties of vehicle chassis during its ride. Further demonstrates how useful measuring is in engineering practice. First, the vehicle chassis is analyzed, next are sensors and whole measuring. Last part includes a description and rating of a braking test in depending on functionality of ABS system. There is a chart of sensors and chart compares results of braking test. Next the measuring systems of Kistler company were described as instance of measuring system for measuring of vehicle dynamics.
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Kinematic analysis of children's gait
Kernerová, Helena ; Vilímek, Miloslav (advisor) ; Horák, Zdeněk (referee)
Title: Children's gait characteristics and kinematic analysis Objectives: The aim of the master thesis is to perform an analysis of the gait of children engaged in intensive sports training (floorball) and children who are not intensively engaged in sports, and to compare selected spatio-temporal, kinetic and kinematic parameters of these two groups. Methods: The work has a theoretical-empirical nature with a smaller number of probands. 3D kinematic analysis of gait was recorded with a Qualisys device and reaction forces from the pad with 7 Kistler force plates. The following parameters are monitored in the thesis: step length, step speed depending on height, range of plantar and dorsiflexion in the ankle joint, rotation of the pelvis and shoulders in the transverse plane, vertical and anterior-posterior component of reaction forces from the ground. Results: The results of the study showed that for some kinematic parameters, intensive sports training of children aged 7-13 years leads to changes in the behavior of individual analyzed parameters. This is mainly due to the fact that the tested group has more symmetrical rotation of the pelvis and shoulders in the transverse plane compared to the control group. However, the results obtained in terms of statistical probability are not sufficiently...
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Gait analysis of female basketball players
Deličová, Tereza ; Vilímek, Miloslav (advisor) ; Horák, Zdeněk (referee)
Title: Gait analysis of female basketball players Objectives: The main objective of this thesis is to perform gait analysis using Qualisys and Kistler systems in long time female basketball players and population that does not engage in any regular sports activity on competitive level. Selected spatiotemporal, kinematic and kinetic gait parameters are compared between measured groups. Methods: 20 female probands participated in this experimental study. Tested group consists of 10 long time female basketball players between ages of 21 and 29 (mean age of 24,5). Control group consists of 10 female probands between ages of 24 and 25 (mean age of 24,5) that do not engage in any competitive sport on regular basis. Qualisys Motion Capture system was used to gather 3D kinematic gait data. Ground reaction forces were measured by using Kistler force plates. Data was obtained by both systems at the same time. Evaluated gait parameters were walking speed, step length, pelvic and shoulder rotation range of motion in transversal plane, CG of foot range of motion and all ground reaction forces components. Two-sample t-test and Mann-Whitney U test with significance level of 0,05 were used for statistical analysis of obtained data. Results: Results of this study demonstrate that long time engagement in...
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Golf swing in subjects with amputation of lower extremity
Richtrová, Michaela ; Otáhal, Jakub (advisor) ; Šifta, Petr (referee)
Author: Bc. Michaela Richtrová Tittle: Golf swing in subjects with amputation of lower extremity Objectives: The study aims at evaluation of the technique of golf swing used by patients with a different type and level of lower extremity amputation as compared to able-bodied golfers. Another objective is determination of the relation between individual phases of the golf swing and weight transfer, using different golf clubs, as compared to able-bodied golfers. Method: By its topic the work is a pilot study. The research has been divided into three descriptive case studies. The experimental group included two amateur golfers and one professional golfer. The control group was represented by an able-bodied golfer. Evaluation of kinematic parameters (trajectory of shoulders, hips, knee joints) was based on the Qualysis Motion Capture System. Evaluation of dynamic parameters (weight transfer) in the course of golf swing was made using two dynamometric Kistler platforms. Results: The measuring has demonstrated that in terms of both kinematics and dynamics, the mode of movement of a patient with a trans-tibial amputation during a golf swing corresponds to that of an able-bodied golfer. The same results were achieved by the patient also with the use of another type of golf club. A change, both in terms of...
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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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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 measured trunk muscles activation during lunge with aquabag than lunge on unstable surface. Another thing which was found is that there was higher activation of Gluteus medius muscle on dominant lower extremity when performin lunge on unstable...
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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...
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Analysis of postural reactions during exercise with loading of the upper limbs by centrifugal force
Dudová, Daniela ; Šorfová, Monika (advisor) ; Tlapáková, Eva (referee)
Title: Analysis of postural reactions of excercise with a load of upper limbs by centrifugal force. Summary: The aim of the study is the kinematic analysis of selected body segments (C7, Th4, Th8, Th12, AC and SIPS) during performance with a special exercise tool Marrko Core®. Another goal is to confirm the existing knowledge in the field of kinesiology about the rotation of spinal segments. In addition, we aim to compare the selected exercises with each other and asses their suitability for application in the general population with back pain of various etiologies. The experiment was performed as a biomechanical study, where specific biomechanical parameters in human body kinetics and muscle activity were measured during performance of specific exercises. All measurements have been undertaken in laboratory BEZ UK FTVS. Systems Qualisys, Kistler and EMG Noraxon were used for measurements of chosen parameters in human body kinetics and muscle activity. Participants: Participants attended in this study (8 individuals- 4 women and 4 men) were all healthy individuals, 20-40 years old, without any limitation of mobility and pain free. They were all recreational athletes. Key words: EMG, Kistler, Qualisys, postural stabilizatio
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Analysis of postural reactions in exercise with symmetric load of the upper limbs by centrifugal force
Langer, Jaroslav ; Šorfová, Monika (advisor) ; Vláčilová, Ivana (referee)
Title: Analysis of postural reactions on excercise with symetrical load of upper limbs by centrifugal force Summary: The aim of this thesis is testing excercise equipment Marrko and its effects on human body. Its based on the similar principle as few of established excersice equipments on the market, that are generating load on body by vibration. Thesis is based as biomechanical study pursuing specification of postural system reactions on specific excercises. EMG, Qualisys and Kistler systems were used to observe specific parameters in human body kinetics and muscle activity. Key words: Qualisys, EMG, Kistler, postural reactions
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Selected fitness aspects of professional firefighters competing in fire sport and TFA
Miřátský, Petr ; Gryc, Tomáš (advisor) ; Coufalová, Klára (referee)
Title: Selected fitness aspects of professional firefighters competing in fire sport and TFA Objectives: The aim of the thesis was to find out the level and the difference in the parameters of body constitution, postural stability and muscular and explosive force of lower limbs with groups of professional firemen competing in fire sport and TFA Methods: The research sample was represented by two groups of professional firemen (17 fire sportsmen and 17 TFA competitors). We assessed chosen parameters of body constitution (Tanita MC-980MA), postural stability (RS Footscan), explosive force (Kistler) and muscular force (Cybex Humac Norm). Assessed parameters of body constitution were percentage of body fat and fatless matter. In the tests of postural stability we assessed total travel way of the centre of pressure (TTW), narrow stand (open and closed eyes) and one-leg stand (right, left). When testing explosive force, overall produced maximal force and height of the leap were assessed. Muscular force was assessed with the help of muscular force moment in concentric muscle activity with angular velocity 60ř·s-1. Results: We found out a significant difference between the two groups in the tests of postural stability - narrow stand with open and closed eyes (F1,32 = 9,94, p<0,01), in the tests of...
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