The aim of this study was to establish whether there are differences between weight categories in different anthropometric measurements and handgrip strength between elite Serbian male and female sambo athletes divided into weight categories. A total of 70 elite Serbian sambo athletes participated in the study, who were participants of the World Cadet Sambo Championship held in Novi Sad. Athletes are classified into categories according to gender and official weight categories. Using anthropometry, we calculated somatotypes and hand-grip strength. For statistical analysis, we used a one-way analysis of variance and Tukey’s post hoc tests to compare group differences by weight categories. Somatotype analysis shows that a typical somatotype in male sambo athletes was endomorphic mesomorphs. In female groups, the most common somatotype in the lightest categories was mesomorphic ectomorphs, and in the heaviest categories were endomorphic mesomorphs. Examining the handgrip for both left and right hand, as well as in total, shows that there is a statistically significant difference between the categories. In total, the strength of the handgrip increases progressively in groups. In male categories, the difference exists between the first 4 groups and -78kg, as well as between -42kg and -46kg and the heaviest weight category. Differences between weight categories in female athletes were found between the lightest group and last six groups in total, in favor of the last six. Anthropometric measurements revealed a statistically significant difference between weight categories. Mesomorphy was the most dominant somatotype in male categories, while female athletes differed concerning weight category. The achieved results can serve as data to compare the somatotype and handgrip strength of elite sambo athletes on a national and international level. These findings suggest that the handgrip strength and somatotypes are the keys to success in relation to the weight category.

Abstract This study’s objective was to analyze the relationship between mental toughness and martial artists’ performance strategies. Two hundred athletes (male: 105, female: 95) with an age range of 18-36 years (mean:25.12, s=4.96) who competed at university to the national standard of martial arts participated in this study. Participants answered mental toughness questionnaires and performance strategies inventory. The Pearson correlation results showed a positive and significant relationship between mental toughness and automaticity, goal-setting, imagery, self-talk, and emotional control, and a negative and significant relationship between mental toughness and attentional control in practice. Furthermore, there is a positive and significant relationship between mental toughness and activation, relaxation, self-talk, imagery, goal-setting, and emotional control in the competition. The multiple linear regression analysis results showed that goal-setting and imagery in practice and competition, self-talk in practice, and relaxation in the competition could predict mental toughness. In analyzing the subscales of mental toughness, it was concluded that tough emotions could be loaded on eight subscales of performance strategies. In the Independent-Sample T-Test, the significant differences related to gender were that men reported higher levels of self-talk (t=3.24, p<0.001), automaticity (t=2.76, p<0.006), goal-setting (t=2.63, p<0.009), imagery (t=2.18, p<0.03) and relaxation (t=2.17, p<0.03) than women.

The evolution of basketball made the game faster, leading coaches to increase the use of pick and roll cooperation in offense. The purpose of this research was to investigate the performance time of the pick and roll every five minutes, the pair of players who participated in the pick and roll and the offensive action of the ball handler after the screen, in the European Men's Championship of 2017. The sample of the research was the sixteen games of the second round of the Championship. The instrument used for the analysis of the matches was the SportScout STA Version 3.2. Analysis with ꭓ2 (Chi-square) was used. In the results analysis, a total of 714 screens were found, of which 356 were successful (49.9%) and 358 (50.1%) failed. Most pick and rolls were performed in the second five-minute span of the third period of the games (14.8%) and in the first five-minute span of the first period (14.1%). Regarding the pairs of players participating in the action, most of them had the guard as the ball handler and the center as the screener (63.4%). In about 60% of the pick and rolls the ball handler chose to finish the action himself either by driving to the basket (31.8%) or with a shot (28.6%). The results of this study provide more information and directions to basketball coaches in order for them to better organize their training and maximize the offensive performance of their teams.

Background: The purpose of this research was to investigate the relationship between cognitive abilities and manual coordination and balance in preschool children. Methods: The sample consisted of 41 preschool children aged 6.4±0.8 on average, of both sexes (30 boys and 11 girls). On top of their regular preschool activities, the children attended a school of sports for preschool children - multisport activities and exercises, twice a week. The sample of measuring instruments comprised 4 motor tests (One-leg stand test, Mann’s test, Finger to nose, Front raises) and 2 cognitive tests (Raven's Colored Progressive Matrices, Cognitive Assessment System). Data was analyzed by applying Linear and Binary logistic regression analysis. Results: Based on the results of the research, one may conclude that there is a statistically significant relation between cognitive abilities and manual coordination in the tested sample of preschool children. The defined predictor system, which consisted of cognitive tests, showed a significant relationship with the hand coordination test, which was assessed by the Finger to Nose test with the eyes closed. A significant contribution to the established relation was given by the G factor estimated by Raven's colored progressive matrices. Conclusions: Physical activities contribute to the development of motor skills and thus to the development of some cognitive abilities in children, which is of great importance for their further development.

This study investigated the influence of maternal level of education and socioeconomic status on maternal knowledge of nutrition, physical activity, and children’s body weight of Nigerian school pupils. A total of four hundred and twelve (412) primary school pupils participated in this study. A structured questionnaire was used to assess the maternal level of education, material’s knowledge of nutrition, and physical activities. Body height and body weight were measured with a wall-mounted stadiometer in meters and a bathroom weighing scale in kg, respectively. The children’s body weight was determined using the formula weight (kg)/height (m2). The children were then categorized into different classes of body mass index based on the recommendation of Centers for Diseases Control and Prevention (2015), which is age and sex-specific for children and teens from two years old through 20 years. The differences in maternal educational qualification and children’s bodyweights were analyzed using the independent sample t-test. However, the influence of maternal SES on maternal knowledge of nutrition, physical activities, and children’s body weights were analyzed using ANOVA. Statistical significance was accepted for a p-value of <0.05. The outcome of this study showed that the educational qualification of mothers had a significant (p<0.05) influence on children’s bodyweights. It was also observed from this study that the maternal SES significantly (p<0.05) influenced maternal nutritional knowledge, maternal knowledge of physical activities, and children’s bodyweights. This study therefore concluded that the maternal level of education and SES do influence maternal knowledge of nutrition and physical activity as well as children’s bodyweights.