The aim was to determine the impact of the steepness of the slope on the biomechanics of World Cup slalom ski racers. We collected three-dimensional kinematic data during a World Cup race from 10 male slalom skiers throughout turns performed on a relatively flat (19.8°) and steep (25.2°) slope under otherwise similar course conditions. Kinematic data revealed differences between the two slopes regarding the turn radii of the skis and center of gravity, velocity, acceleration, and differential specific mechanical energy. Examining the time-course behaviors of variables during turn cycles indicated that steeper slopes were associated with slower velocities, but greater accelerations, during turn initiation; narrower turns with peak ground reaction forces concentrated at the midpoint of steering; more pronounced lateral angulations of the knees and hips at the start of steering that later became less pronounced; and overall slower turns which involved deceleration at completion.
COBISS.SI-ID: 4635569
This paper presents the development of sports sociology in Eastern European countries. Exposed are the main dilemmas of research over the last 30 years, a review of the social environment, which affect the individual phenomena in sport (violence, doping, etc.). It also indicates the development of sports sociology in these countries in the future.
COBISS.SI-ID: 4684977
Infrared thermographic imaging (IRTG) is a safe and reliable technology used to monitor skin temperature. The main aim of our study was to evaluate the relationship between skin temperature changes and muscle fatigue in order to answer the main research question if IRTG can be used to monitor muscle fatigue. This was a case study performed on a 23-year-old trained middle distance runner. After warm-up the subject was exercising on the dynamometer for 7.5 min at 120°/s performing only concentric contractions of quadriceps. At the same time IRTG recording of both (exercising and non-exercising) quadriceps was performed. A correlational analysis that was performed in order to quantify the relationship between power and temperature change over time has shown that there is a significant negative correlation between skin temperature increase and power decrease (r = −0.543, p = 0.036) of exercising quadriceps.
COBISS.SI-ID: 4773553
We analysed video footage and categorized 5024 different basketball shots from 40 basketball games and 5 different levels of competitive basketball (National Basketball Association (NBA), Euroleague, Slovenian 1st Division, and two Youth basketball competitions). Statistical analysis with hierarchical multinomial logistic regression models reveals that there are substantial differences between competitions. However, most differences decrease or disappear entirely after we adjust for differences in situations thatarise in different competitions (shot location, player type, and attacks in transition). Differences after adjustment are mostly between the Senior and Youth competitions: more shots executed jumping or standing on one leg, more uncategorised shot types, and more dribbling or cutting to the basket in the Youth competitions, which can all be attributed to lesser technical and physical ability of developing basketball players.
COBISS.SI-ID: 4684209
The scientific monograph entitled "Kinematic Analysis of Basketball Shooting" and subtitled “Application of Different Technologies” presents the results of ten years of research work in the area of shooting kinematics. Different technologies and methods of kinematic analysis were applied. The authors highlighted three different technologies: The camcorder-based three-dimensional kinematics system, the inertial motion capture system, and the instrumented basketball (94Fifty system) enabling a detailed and simultaneously objective and reliable kinematic analysis of a basketball shooting also at the scientific-research level. Using these technologies, different factors of shooting performance were studied from the kinematic point of view. The following factors were put at the forefront: fatigue, body height, playing position, shooting distance and some other factors that influence the shooting technique.
COBISS.SI-ID: 4715185