All physical activity of preschool children during the day occurs while they are in kindergarten or during their leisure time. The aim of the study was to present the results related to the participation of children in organized activities during leisure time and what is the perception of parents about the scope of their children's physical activity and the time spent on watching TV, using computers and playing video games (as a part of wider study). The research was conducted in 2017 in the Preschool institution “Naša Radost” in Subotica. The survey questionnaire was filled in by 135 parents for children of the average age of 5.14 years (±0.91). The survey questionnaire contained questions about children's nutrition (NutriStep survey) and their involvement in organized activities with educational and sports-recreational content during leisure time, as well as parent’s opinion on quantity in child’s sedentary activities. 65.9% of children aged 5 to 7 was found to attend some kind of organized activity, most often within programs of foreign language schools, sports schools and programs with aesthetic  presentation of skills is important (ballet, dance and folklore). The largest number of parents reported that their child spent one hour watching TV, using a computer or playing games. About 71% of parents reported that their child was physically active enough. In both cases, a statistically significant difference was found between boys and girls. Within the family circle and within the educational institution, where children spend most of the time, it is necessary to provide conditions for undisturbed growth and development. One of the best ways is through exercising physical activity. 

The lack of common rules and credible judgement created particular problems gymnastics competitions, organized by the two international sports institutions (IOC, EG), until the beginning of the World War I. After the end of the war, these institutions began to cooperate, to widen and to put under their aegis all the existing Gymnastics Federations. In the decades of 1920 and 1930 totally five International Gymnastics competitions were organized by the IGF and five Olympic Games by the IOC. Despite the considerable efforts of the two institutions for commonly accepted regulations, reliable judgment and uniform apparatuses, no solution was found. So, there were a lot of problems, since several federations were introspective and followed their own regulations and principles. This fact affected negatively the general development of gymnastics.

The purpose of this study is to research and show off the structures and characteristics of the regulations of gymnastics in the decades of 1920 and 1930 as well as the reasons that caused the lack of common rules and their effects in the development of gymnastics.  

Lately, there has been increase of interest in examining the motives of male and female adolescents for taking part in physical activities, as well as examining their depression, anxiety and stress. The objective of this paper was to investigate intergender differences between male and female adolescents concerning the motives for physical exercise, depression, anxiety and stress. The pertinent sample accounted for 332 high-school students of both sexes from Valjevo (164 females and 168 male high school seniors), aged 18.10 ± 0.86. Three measuring instruments were used: Questionnaire for collecting basic data, The Exercise Motivation Inventory 2 („EMI–2“) questionnaire and the Depression anxiety stress scale (DASS – 21). The internal consistency and reliability of the questionnaire and the scale was satisfactory. The given results revealed that there are statistically significant gender differences, as the male adolescents, compared to the female adolescents, more frequently took part in physical activities (p ≤ 0.01). The important difference between the motives for participating in physical activities between the male and female participants was defined, so the motives: Socializing, Competition, Enjoyment, Social recognition and Strength and Persistence were more dominant with male adolescents, whereas motives: Appearance, Agility, Maintaining and improving health, and Body mass control were manifested more with female high school seniors. The findings revealed, with the probability of error being 0.05 the statistically significant differences of the depression dimension between the adolescents who rarely or never take part in physical activities and those who take part in physical activities three or more times a week. The results suggest that there are significant differences between male and female participants when it comes to stress variable (t = -2.47, p ≤ 0.01) and anxiety variable (t = -2.17, p ≤ 0.05). Differences on the depression variable are not significant. The findings were discussed within the context of current empirical and theoretical frame. 

Although beach handball comes from the sport that is played indoors it has significant differences from it. The aim of the study was to investigate and compare tactical options in both defense and attack between men and women. In 16 games from 2017 European Beach Handball Championship, 1074 attacks and defense situations were analyzed, in order to examine different attack and defense tactics. The selected method was video-analysis. The ꭓ2-test was used to compare the differences between the formations in defense and attack. In defense the results showed that men use more often 3:0, 2:1C and 2:1L formations, while women use more often 3:0. From the comparison between men and women it appeared that, in the initial formation of defense, there are significant differences, while in the final tactical formation are minimal. Men, in the initial and final tactical option in attack, used the system with one pivot and the specialist in center. Women use the same formation but also the one with a pivot and specialist at the left side of the attack at the substitution area. In the initial attack formation, appeared few significant changes between men and women, while in the final tactical formation there were no changes. Finally, the final throwing attempts, men choose to make them mainly from the center while women from the right and from the center. In conclusion, we can say that men’s and women’s tactical choices in defense and offense show some differences, but these differences are small. 

This article represents a review of the existing literature on possible long-term effects of sport participation at high-level on health. Search of databases was performed through Web of Science and Science Direct including following keywords: metabolic risk factor/syndrome, diabetes mellitus and cardiovascular health. Former athletes tend to adopt healthier lifestyles, which may give them an advantage in relation to risk factors taking into account metabolic risk factor/syndrome, diabetes mellitus and cardiovascular health. Health benefits of physical activities, moreover, depends of engagement at recommended levels, even in subjects who have never been athletes. 

The aim of the study is to examine if and to what extent the evaluations of fitness studios by persons who have recently resigned from their membership are related to general studio conditions such as studio atmosphere, facilities, trainer’s competence and other features. In other words, the question is whether there are typical prioritizations on positive or negative evaluations by dropouts from fitness sport. In the survey a total of 225 people, who had quitted their membership in the past, were questioned in a telephone inquiry. The study was conducted in a health-oriented fitness center in a major city in Germany. At the time of the study the fitness facility had up to 1.151 memberships. Among them, 59% of the members were women and 41% were men. The average age of the respondents was 43.5 years. The average duration of membership added up to 4.4 years. Overall, the various aspects of the studio offer and its surroundings were mostly rated as “good”.  The respondents appreciated particularly the coaches (friendliness, helpfulness, competence), followed by opening hours, trial training and the first impression.  The membership costs and individual aspects such as space, music and ventilation are assessed more critically, if not really badly. The data show that the various evaluation aspects were clearly assessed differently by the respondents, and that there was apparently little generalized information on the studio evaluation. 

Studies concerning the effects of different invasion games on physical fitness in school children are scarce. Consequently, the purpose of this study was to examine the effects of the application of invasion games on physical fitness in primary school children. A total of 62 primary school children aged 10-12 years voluntarily participated in this study. They were divided into experimental (32) and control (30) group. Physical fitness of children was estimated by the following tests: Standing broad jump, Vertical jump, Bent-arm hang, Sit-ups, Push- ups, Medicine ball test and Andersen test. The experimental group had twice per week invasion games on non-consecutive days for 12 weeks. Participants in control group did not perform specific program but attended their regular PE class twice per week. Compared with initial measurement, there was a significant (p < 0.05) improvement in vertical jump test for both groups. Furthermore, the group that participated in the invasion games program made significantly greater gains compared to the control group (p < 0.05) in Standing broad jump (8.2%; ES=0.56 vs. 3%; ES=0.2) and Medicine ball test (8.2%; ES=0.6 vs. 3%; ES=0.3). There was a significant improvement in bent arm hang, sit ups and push-ups in experimental group. Compared with initial measurement, there was a significant (p < 0.05) improvement in Andersen test in invasion games group, which was not the case with control group (p>0.05). To conclude, invasion games were an effective way of improving physical fitness in primary school children, because the results of this study indicate that this method was more effective for physical fitness than traditional school program. 

The aim of this paper was to determine whether the high-intensity interval training (HIIT) training can improve aerobic fitness in regional-level soccer players. Billat method (30-30s and 15-15s; 6-12 min) was used twice a week for 8 weeks during a season. Twenty-Three National-level soccer team players, (years=25±8, height=183.28±5.93, weight=75.28±5.9), were recruited for this study. Pre- and post-experimental period, maximum oxygen uptake was measured thru pseudo-ramp test on treadmill until volitional fatigue. Obtained results showed improvement in aerobic fitness for post- vs premeasurement (initial measurement = 51.92±3.40, final measurement = 54.87±2.61, p<.001). It is likely that specific high intensity interval training is viable method for aerobic fitness improvements in national-level soccer players when conducted during season.

The aim of this study is to establish the effects of specially programmed circuit training on physical fitness in primary school children. A total of 58 (28 girls) primary school children aged 11-13 (experimental group 12.2±1.2, control group 12.4±1.1) years voluntarily participated in this study. Physical fitness of children is assessed based on motor skills, through the following tests: abdominal muscle endurance - Sit-ups test, upper body strength and muscular endurance - Bent-arm hang test, upper-body muscular endurance - Pushups test, muscular strength and power of the lower limbs - Standing broad jump test, agility and speed - 4x10m test and flexibility - Sit and reach test. During the regular classes of physical education, the experimental group conducted a circular training lasting 15-20 minutes, at the same time control group practiced exercises that were in accordance with the plan and program of teaching physical education for a particular teaching unit. The treatment lasted for 15 weeks, with two classes of physical education per week. The results for the standing broad jump indicated significant differences between groups following 15 weeks. Furthermore, the group that participated in the circuit training program made significantly greater gains compared to the control group (p<0.05) in bent-arm hang, sit-ups and sit and reach. The results for the 4x10m test indicated no significant differences in time, group and their interaction (p≥0.05). To conclude, circuit training appears to be an effective way of improving physical fitness in primary school children. The results of this study indicate that this method was more effective for performance than traditional school program. 

The aim of this study was to establish the genderrelated differences among children 6-6.5 years of age in anthropometric characteristics so as to observe their development and make more appropriate selection for participation in guided and organised physical activities. A battery of 7 anthropometric measurements was used on the representative sample of 175 subjects of both genders from Valjevo (M=45 aged 6 and M=83 aged 6.5; F = 44 aged 6 and F=43 aged 6.5). The multivariate analysis of variance showed the existence of statistically significant differences (p=0.00) in the anthropometric space of the two ages analysed regarding the gender. Through the individual analysis, the differences at age 6 were found in the Upper arm skin fold variable (p=0.03) and the Back-skin fold (p=0.00), whereas with the 6.5-year-old subjects, the differences were found in the Body height variable (p=0.03), Upper arm skin fold (p=0.00) and Back skin fold (p=0.02), both in favour of the boys. It can be assumed that the differences are the result of the endogenous and exogenous factors upon the children's organism in the period of childhood in a smaller urban community of the southwest Serbia.