Measuring and assessing motor skills of selected Croatian U12, U14 and U16 tennis players.

The aim of this research is to analyse and to determine the differences between tennis players in younger age categories (U12, U and U16) in certain motor skills. A total of 60 tennis players ranked in the rankings of the Croatian Tennis Federation were measured by using 10 tests for assessing explosive strength in jump, speed, agility, and trunk strength. The tennis players were divided into three groups of 20 respondents, depending on the age category in which they compete.

Performance Indicators of Winning and Defeated Female Handball Teams in Matches of the 2012 Olympic Games Tournament.

The aim of the study was to determine performance indicators of winning and defeated women teams of the 2012 Olympic Games handball tournament. The sample of entities consisted of 27 games played during the preliminary round of the competition. The sample of variables consisted of the completed and unsuccessfully executed technical and tactical handball elements in attacking and defensive actions during handball matches (14 variables describing performance in attack and three variables related to defensive play).

Differences among Tennis Players Aged 12, 14 And 16 Years in Certain Morphological Characteristics: A Croatian Prospective.

A sample of young tennis players aged 12, 14 and 16 in Croatia. Sixty (60) tennis players ranked on the scale of the Croatian Tennis Association were analyzed through differences in morphological characteristics, as identified by a standard laboratory diagnostic procedure in Sports-diagnostic Centre of the Faculty of Kinesiology at the University of Zagreb. Significant differences were obtained in most of the monitored measures for the assessment of the morphological characteristics but the most significant differences were reflected in the variables for assessment of longitudinal dimensionality of the skeleton and body mass and voluminosity of the body.

An unusual complication of ischemic injury to upper pole ureter during lower pole heminephroureterectomy.

Lower pole heminephroureterectomy is a common paediatric urology procedure with few reported complications. We report a case of possible vascular ischemic injury to the normal remaining ureter following a lower pole heminephroureterectomy, probably due to both ureters sharing a common blood supply. Extra caution in such procedures is therefore warranted.

Effects of an additional basketball and volleyball program on motor abilities of fifth grade elementary school students.

The aim was to evaluate the transformational effects of an additional weekly PE session based on team sports (basketball and volleyball) on students' motor status. The research was conducted on a sample of 125 eleven-year-old boys divided into three groups (two experimental and one control) which were examined by 12 motor tests at the beginning and at the end of the 9-month period. The tests included evaluation of explosive power dynamic and static strength endurance, co-ordination, flexibility and hand frequency motion.

A fuzzy model for assessing risk of occupational safety in the processing industry.

Managing occupational safety in any kind of industry, especially in processing, is very important and complex. This paper develops a new method for occupational risk assessment in the presence of uncertainties. Uncertain values of hazardous factors and consequence frequencies are described with linguistic expressions defined by a safety management team.

Effects of screen filter on visibility of alphanumeric presentation on CRT and LCD monitors.

In this paper, a research that deals with the problem of determining of the visibility of the alphanumeric presentation on CRT and LCD screens is presented, in conditions when the screen filters are used, and when they are not used. A methodology that can be used for determination of the visibility of alphanumeric symbols on VDT screens is presented. It is determined the existence of differences in visibility of alphanumeric presentations when screen filters are used, compared to conditions when they are not used.

Fitness profiling in handball: physical and physiological characteristics of elite players.

The purpose of this study was to describe the structural and functional characteristics of elite Croatian handball players and to evaluate whether the players in different positional roles have different physical and physiological profiles. According to the positional roles, players were categorized as goalkeepers (n = 13), wing players (n = 26), backcourt players (n = 28) and pivot players (n = 25). The goalkeepers were older (p < 0.

Fitness profiling in soccer: physical and physiologic characteristics of elite players.

The purpose of this study was to evaluate whether players in different positional roles have a different physical and physiologic profile. For the purpose of this study, physiologic measurements were taken of 270 soccer players during the precompetitive period of 2005/06 and the precompetitive period of 2006/07. According to the positional roles, players were categorized as defenders (n = 80), midfielders (n = 80), attackers (n = 80), and goalkeepers (n = 30).

Effects of sprint and plyometric training on muscle function and athletic performance.

The purpose of this study was to evaluate the effects of sprint training on muscle function and dynamic athletic performance and to compare them with the training effects induced by standard plyometric training. Male physical education students were assigned randomly to 1 of 3 groups: sprint group (SG; n = 30), plyometric group (PG; n = 30), or control group (CG; n = 33). Maximal isometric squat strength, squat- and countermovement jump (SJ and CMJ) height and power, drop jump performance from 30-cm height, and 3 athletic performance tests (standing long jump, 20-m sprint, and 20-yard shuttle run) were measured prior to and after 10 weeks of training.

Time course of erythrocyte antioxidant activity in patients treated by thrombolysis for acute myocardial infarction.

The deleterious effects of free radicals in acute myocardial ischaemia/reperfusion are rather well known. However, the possibility that thrombolysis positively affects the recovery of blood antioxidant capacity in the later postinfarction period, and thus contributes to the better overall outcome of these patients, has not yet been investigated. We followed the time course of erythrocyte antioxidant activity in 45 patients with first acute myocardial infarction (AMI), who were treated with streptokinase.