The aim of this study is to combine the basic concepts of mechanics on drill string which are related to directional drilling, thus finding a less complicated and more economical way for drilling directional wells. Slick BHA, which has no stabilizers attached and single stabilizer BHA are analyzed through previously derived formulas gathered from the literature that are rearranged for this study. An actual directional well is redrilled theoretically with a slick BHA and a computer program is assembled for calculating the side force and direction of the well for single stabilizer BHA. Influence of controllable variables on drilling tendency is investigated and reported. The study will be useful for well trajectory and drill string design in accordance with the drilling phase. Also, by using available data from offset wells, drilling engineer can back-calculate the formation anisotropy index (FAI) that is often used for optimizing well trajectories and predicting drilling tendency on new wells in similar drilling conditions. After analysing the directional well data used in this study, it has been concluded that the well could be drilled without a steerable tool if the kick of point (KOP) is not a shallower depth. If the KOP is kept similar, the same curvature could not be achieved without a steerable tool.

Title: Comparative analysis of selected soccer kicks Objectives: The main objective of the study is to characterize the involvement of selected muscles during soccer kicks by time and space and subsequent comparison with specific exercises with expander by EMG measurement. Methods: The study has a character of a case study, comparative analysis of relative timing of movement and activity of selected muscles during soccer kicks by surface poly-electro-myographical analysis and kinematic analysis. Results: Timing of muscles involvement during soccer kicks is different than timing of muscles involvement during exercise with expander. Keywords: EMG, soccer, kick, muscles, activation

Title: An analysis of the ofensive and defensive activities in set plays Objectives: The main objective of this work is to analyze the implementation of set-plays in the offensive phase of the game matches teams selected for the Champions League 2009/2010. Identification of the key moments leading to successful or unsuccessful completion. Description and graphical representation of the set-plays. Methods: In our work we used as the primary method of obtaining data on the phenomenon of mediated reference, registered observations. It is the indirect observation of DVDs with each team, where we watched our investigation established criteria. The research section has been used both quantitative and qualitative analysis. Quantitative analysis, we obtained data on the frequency of observed phenomena, qualitative analysis shows the critical points and the current developments in implementation of set-plays . Models based on the graphical representation we then facilitate the application of this knowledge in the training practical. Results: The results reveal the ways plays for set-plays were used in the Champions League 2009/2010 in the offensive phase of game and the negotiations in the process of defense. They point to developments and changes occurring with different frequency factors. Keywords:...

Title: Dependence of the air consumption and the position of the body on the selected method of diving kick and swimming speed Objectives: The goal of this work is to find out the relationship between the diver's swimming speed and the air consumption while using two different methods of diving kicks - flutter and frog kick. At the same time, assess the dependence of the position of the body and head on the swimming speed and method of diving kicks. Methods: In this work was used method of collecting data in real conditions by measuring devices and statistical evaluation of collected data. Results: The results are presented by graphs both in the text of this work and in attachment for its large size. The results of all probands are presented in summary graphs and for selected values the degree of association is calculated in tables using the Pearson correlation coefficient. The main result is the confirmation of the reduction of the deviation from the horizontal position when comparing the slow and higher swimming speeds of both flutter and frog kick. The most effective way for a diver to overcome 50 meters below the water surface was determined to be a flutter kick at medium speed (average 0,37 m/s). Keywords: scuba diving, body position, head position, air consumption, speed of swimming, flutter...

Title: Strength as a determinant of kick speed of young soccer players. Objectives: Identify the relationship of strength of extensors and flexors of knee and the kick speed and accuracy of young soccer players. Methods: The study group consists of 20 players in the age between 20-25 years (22,45±1,12 years) league level engaged in the provision of an elite soccer club. The players passed the tests of strength abilities week before field testing of kick speed and accuracy. Strength extensors and flexors of knee were measured in laboratory conditions at three different stages of the angular velocity of the dominant and nondominant lower leg. After week the players completed three shots on goal by preferred and non-preferred leg, where we measured the speed and accuracy of kick. Results: The results of work submit information about relationship between the strength of extensors and flexors of knee and the kick speed and accuracy depending on the degree of angular velocity. It has been found moderate - strong correlation between conditionings depending on the different degrees of angular speed of the movement. Keywords: accuracy, kick, skill, soccer, speed, strength

Thesis--University of Turku, Finland, 2001. / Includes bibliographical references.

Thesis--University of Turku, Finland, 2001. / Includes bibliographical references.

Proefschrift Universiteit Maastricht. / Met lit.opg. en bibliogr. - Met een samenvatting in het Nederlands.

Title: The influence of equipment and arms on skeletal muscles activities while practising direct kick. Aim: The aim of this thesis was to find out the influence of carried equipment and arms on the activity of skeletal muscles when a direct front kick is being practised. The methods used: This thesis has an empirically observational character. Muscular activities were measured by means of surface electromyography synchronised by Qualisys screen system. To obtain statistic data, a t-test has been used, requiring 5 % significance level. Results: While carrying a 15-kilogram load, the activity of skeletal muscles was not significantly reduced when performing a direct front kick. However, a 30- kilogram load caused a substantial reduction of skeletal muscular activities during the kick described above. After adding a 15-kilogram bag to another 15 kilograms in the form of a body armour, a helmet and arms, the muscular activity changed its features in a considerable way. Furthermore, most respondents proved 45-kilogram load to be over their limit. The equipment and arms of that weight led to the summation action potential, exceeding the power- coordinative functional reserve, and thus the deformation of the direct front kick technique. Keywords: close combat, EMG, equipment, arms, direct front kick

Title: Influencing the shooting speed in football Objectives: The aim of my thesis was to record, evaluate changes and verify the effectiveness of the implemented intervention during the reference period in the development of shooting speed together with a rebound ability in a long jump in a football team which is operating in the 5th highest football competition in Germany. Methods: Quantitative research was carried out in the form of motor testing of a football team from a selected foreign football league during the autumn part of the competition. Two tests were selected to determine the development of the explosive force of the lower limbs. It was a specific test of the explosive force of the lower limbs - a kick from a one-step rhythm and a test of the general explosive force of lower limbs - jump. It was a so-called cross over study. Team was divided in two groups, where group A was doing implemented intervention in a different part of reference period than group B. Results: Based on the analysis of descriptive statistics, there was an increase in the statistics in the long jump and a decrease in the statistics in both monitored groups, while group A has the observations with the greatest improvement, but in the group B can be seen mostly an improvement across the whole group. For the second...