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Pelvis position in 3D space and its influence of stages of pregnancy
Vosátková, Marie ; Jelen, Karel (advisor) ; Hendl, Jan (referee)
Title: Pelvis position in 3D space and its infuence of stages of pregnancy Summary: The aim of this master thesis is to evaluate changes of the pelvis position of women during pregnancy and if these changes influence the LBP during gravidity. The research is based on the summary of theoretical findings about the issue of changes during pregnancy which could be responsible for the LBP. The main topics of this part of thesis are anatomy and kinesiology of pelvis, functional vertebral disorders, LBP in gravidity, physiological and biomechanical changes during pregnancy, definition of 3D space with connection to human body and introduction of the 3D kinematic analysis. 10 (9) pregnant women in the age of 26-35 years was evaluated in 3rd , 5th and 8th month of gravidity. The pelvis position in 3D space was objectified with the Qualisys technology and the LBP and the PGP with subjective evaluation of the VAS. LBP was found in 7 of 10 and PGP in 3 of 10 evaluated pregnant women. Our findings show the tendency to the change of the pelvis position in the sagittal plane in the direction of the forward tilt. In our group of evaluated woman was found the connection between the absolute change of the pelvis position in the sagittal plane and the LBP and the PGP during pregnancy, but to define clear and...
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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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Stability of motion for softball pitcher by kinematic analysis
Vacek, Milan ; Pravečková, Petra (advisor) ; Kočíb, Tomáš (referee)
Title: Stability of motion for softball pitcher by kinematic analysis Objectives: The aim of this work was to analyze the motion of softball pitch. We tried to compare and find differences between four kinds of the pitch. Methods: In our thesis we used 3D kinematic analysis to collect data. We used the system Qualysis. High - frequency cameras recorded 32 pitches from the male Czech pitcher and then analyze in specific software. Results: We found out that motion of the pitches are not very different from each other. Only change up is significantly different from other pitches, but still batter is not able to recognize, which kind of the pitch is pitcher going to use. Keywords: fastball, raiseball, dropball, change up, biomechanic of motion, 3D analysis, Qualisys
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Kinematic analysis of gait in patients with hip osteoarthrosis
Říhová, Barbora ; Malá, Jitka (advisor) ; Stupková, Michaela (referee)
Author: Barbora Říhová Title: Kinematic Analysis of Gait in Patients with Hip Osteoarthrosis Objectives: The aim of this thesis was to analyse the gait patterns in probands with Stage III osteoarthritis of the hip joint, to compare these patterns with published norms and to confirm a set of pre-established hypotheses. Method: The thesis was designed as a case study, the purpose of which was to observe changes in the pelvis and trunk extension during gait, associated with significant degenerative changes in the hip joint. A total of 9 probands with Stage III osteoarthritis of the hip joint (6 females, 3 males) took part in the study. A complete physiotherapy assessment was carried out as part of the study. The temporal gait parameters were used to measure the probands' walking speed and relative stance phase duration. The following variables were measured in the frontal plane: lateral displacement of the pelvis and trunk toward the stance limb (cm) and pelvic obliquity toward the swing limb (degrees). A 3D motion analysis and evaluation of kinematic parameters were carried out using the Qualisys motion capture system device consisting of 6 infrared cameras. Gait was measured at different walking speeds during a 10-second time frame and the data was subsequently subtracted from a minimum of 5 gait...
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The influence of woman's masectomy on breathing movements
Koudelková, Klára ; Ravnik, David (advisor) ; Kubový, Petr (referee)
Title: The influence of woman's masectomy on breathing movements Objectives: The aim of this work is to investigate influence of total mastectomy on range of breathing motion. We compare women after mastectomy and healthy women. The next goal is to investigate presence of asymetry these movements between surgical and nonsurgical side. We again compare results of women after mastectomy and healthy women. I would like to point to need of care for the scar, thanks to which we can minimize its negative effects. Methods: In our thesis we used optoelectronic kinematic analyzer Qualisys to measure range of motion of thoracic and abdominal wall during breathing. We made measurement during quiet and deep breathing. More facts about patient's condition we obtained through kinesiology examination. Results: We found out that total mastectomy have an effect on range of breathing motion in women after this operation. The surgery side show lower range of motion during breathing. It means that we found presence of asymmetry theses movements between surgical and nonsurgical side. The biggest asymmetry was present in third line (cca level of fifth rib). These findings we can see during quiet and deep breathing and prove our claim about the need of care for scar. Keywords: breathing movements, total mastectomy,...
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Effect of shooting stances on ballistic protection of the shooter
Zdražila, Václav ; Barták, Erik (advisor) ; Kubový, Petr (referee)
Title Effect of shooting stances on ballistic protection of the shooter Objectives The goal of this thesis is to develop a method which could measure ballistic protection, which is currently provided by a bulletproof vest to the shooter in a current shooting stance. This work also focuses on analysis of the currently used shooting techniques and shooting stances, comparison of protection they can provide, and last but not least, to fill the gap in literature, wich deals with this issue. Methods This is an empirical thesis of observational character. Shooting stances were tested on a camera system named Qualisys. The results were first processed by a program for 3D analysis, and the ballistic protection provided by the bulletproof vest in different positions was calculated in a program for 3D modeling. Results: From the measured data, it was found that changing targets to the left (for right- handed) the provided ballistic protection significantly changes to worse. Conversely, when changing targets to the right, the ballistic protection faired the same or slightly better than aiming forward. The worst results of all stances came from the side shooting stance in which the bulletproof vest provided almost no protection. Keywords Ballistic protection, shooting stances, Qualisys, 3d analysis, vital zone
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Detection of head biomechanical response during extreme loading
Fanta, Ondřej ; Jelen, Karel (advisor) ; Kovanda, Jan (referee) ; Hynčík, Luděk (referee)
CHARLES UNIVERSITY IN PRAGUE Faculty of Physical Education and Sport Dissertation thesis March 2014 Ondřej Fanta ABSTRACT Title: Detection of head biomechanical response during extreme loading Objectives: The aim of the work was to monitor the current state of knowledge on the issue of closed head injuries, in contact and contactless respectively impacts, to establish appropriate biomechanical indicators for the detection and analysis of internal mechanical response under external mechanical load and to assess the specific circumstances that may affect the resulting injury criteria especially with regard to the actual reaction of the organism before impact. Methods: To the processing research were included and cited in particular impacted world-class publications and bibliography in the number of more than 80sources. The measurements and analysis of contact impacts were taken on the constructed impactor and the analysis of the contactless collisions were taken on the impacts simulator. The monitored biomechanical values were in particularly kinematic data describing the movement of the head towards the neck, values of acceleration of the head, head injury criteria and activity of selected muscles of the neck. Results: It consists diagram of the process of head injury and analysis of two main branches -...
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Biomechanical reflection of the cervicocranial part during frontal impact
Kozel, Jakub ; Jelen, Karel (advisor) ; Heller, Jan (referee)
Title: Biomechanical reflection of the cervicocranial part during frontal impact Objectives: The aim of the work was to analyze in which parameters differs ATD from human participant during frontal impact. Characterize the head movement, compare maximal post impact head speed between ATD and human volunteers and defereneces between volunteer with eye control and without. Methods: Measuring was done with 8 volunteers and ATD (Manikin, 50th percentile man). For each volunteer were done two measurements, first without eye control and second with eye control. ATD was measured twice. It was recorded by Qualisys system, specifically by three optical cameras, on crash simulator. Results were processed in Qualisys Track Manager. There were tracked three markers, two on the body - forehead, shoulder and one on the sledge. Results: Results showed that speed of the head depends on eye control. Volunteer without eye control had higher post impact speed of head (4,94 m/s) than ATD (3,67 m/s) and volunteer with eye contact (3,19 m/s). Quite the same result was observed in change of distance between head and sledge after impact. There was higher value for volunteer without eye contact than for ATD. Keywords: Whiplash, frontal impact, Qualisys, crash simulator, cervicocranial part
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