Acta Universitatis Palackianae Olomucensis. Gymnica, 2013 (vol. 43), issue 3

Test-retest reliability of the net joint power transferred by the lower limbs during walking in healthy men

Daniel Jandačka, Jaroslav Uchytil, Zdeněk Svoboda, Milan Elfmark, Miroslav Janura

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 7-15 | 10.5507/ag.2013.013

Objective: To determine the reliability of the measurement of net joint power during repeated gait measurements within one day and between two different measurement days. Methods: Thirty able-bodied men who underwent repeated gait measurements within a day and between days participated in this research. An acceptable trial was one in which the participant complied with the range of walking speed 1.45 m/s ± 5%. Three-dimensional angles, angular velocities, net moments of force and net power for the ankle, knee and hip joints were determined using external passive reflective markers, an 8-camera motion analysis...

Somatic parameters of 17 year old soccer players in the older youth category in relation to sports performance

Petr Kutáč

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 17-26 | 10.5507/ag.2013.014

Background: Somatic parameters are included not only in the general structure of sporting performance, but also in the structure of sporting performance in soccer. In light of this structure, higher performance players should have better somatic performance prerequisites, and their somatic parameters should differ from players with lower performance levels. Objective: The aim of the study is to assess the somatic parameters of players with different performance levels. Methods: The research included 90 soccer players in the age of 17 years in three performance categories playing in the junior competition in the Czech Republic....

Heart rate and time-motion analyses in top junior players during basketball matches

Karel Hůlka, Roman Cuberek, Jan Bělka

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 27-35 | 10.5507/ag.2013.015

Background: Basketball performance can be classified as an intermittent physical activity due to the changing situational game conditions and the number of intervening variables. It is necessary to have detailed knowledge about the performance of basketball players during a match as a background for more specific planning of the training process. Objective: The aim of this study was to analyse the indicators of internal and external load of basketball player's performance during a match of U18 top men basketball players as a background for the planning of specific training processes. Methods: Thirty-two Czech top junior basketball...

Selected personality traits and achievement motivation in university students of physical culture, education and natural sciences

Martin Sigmund, Jana Kvintová, Iva Dostálová, Zdeněk Hamřík

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 37-47 | 10.5507/ag.2013.016

Background: Understanding personality variables and other important psychological traits in the university population appears topical particularly with respect to personality, motivation, health as well as overall academic achievement. A significant role is played by correlations of the monitored variables in relation to selected study specialization. Objective: The main objective of the present study is to extend the knowledge on selected personality traits and the level of achievement motivation in a specific group of university students with respect to the diversity of their study specialization. Methods: The study included...

Development and validation of system for measuring poling forces during Nordic walking

Jakub Krejčí, Aleš Jakubec, Martin Pšurný, Miroslav Janura

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 49-56 | 10.5507/ag.2013.017

Background: Recently, the popularity of Nordic walking (NW) has been rising steadily. Many scientific studies researched the promising and beneficial effects of this form of physical activity. However, only a few studies provided data about the forces acting on the poles. We did not find a commercially available system that enables the measurement of the poling forces. Objective: The objective of this paper was to develop and validate a system for measuring the poling forces during NW. Methods: Strain gauge force tranducers were mounted below the grips of standard NW poles. The transducer signals were amplified and converted...

Impact of walking speed and slope of the ground on axial force of poles in Nordic walking

Martin Pšurný, Miroslav Janura, Jakub Krejčí, Aleš Jakubec

Acta Univ. Palacki. Olomuc., Gymn. 2013 43(3): 57-63 | 10.5507/ag.2013.018

Background: Nordic walking (NW), due to its attractiveness and convenience of equipment, is becoming more popular and utilised in the areas of sports, recreation and physiotherapy. Some of its impacts on load to the body have not yet been sufficiently explored. Objective: The objective of the study was to determine the impact of walking speed and slope of the ground on the magnitude of axial forces, transferred to the poles by upper extremities during NW. Methods: The study was participated in by 17 healthy subjects, aged 25.9 ± 3.6 years, who went through 12 independent measurements on a treadmill in various...