Background: Children and adolescents with autism spectrum disorders tend to participate in less physical activity. The purpose of this study was to identify barriers to physical activity participation in children and adolescents with autism spectrum disorder (ASD) based on parental reports. Methods: The sample comprised 370 children and adolescents with ASD, aged 8–20 years. Simple random sampling was selected. We designed a questionnaire and used the survey method for data collection. Data were analyzed using descriptive and inferential statistics. Results: The results revealed several barriers to physical activity participation: interpersonal barriers were the top priority, followed by friends and peers as well as psychological factors as the second and third priorities. Additionally, family, cognition, management and planning, social and cultural factors, and skills were identified as the fourth through eighth barriers, respectively. Conclusions: Understanding these barriers is crucial for developing effective school- and community-based strategies to promote physical activity participation.

Proper posture, characterized by the appropriate alignment of the cervical, thoracic, and lumbar segments of the spine, enables these regions to maintain their normal curvature. Body composition is recognized as one of the factors that can influence overall postural alignment of the spine. The objective of this study was to determine the influence of the parameters of body composition on the prevalence of postural disorders in the sagittal plane. The cross-sectional study was conducted on 152 children of both genders (78 boys), at a mean age of 11 years ± 6 months. In order to evaluate postural disorders, the Formetric 4D System, a tool manufactured by Diers, Schlangenbad, Germany was used. Based on its output data, the following variables were obtained: hyperkyphosis, hyperlordosis, kypholordosis, flatback, and normal alignment of the body in the sagittal plane. The evaluation of body composition parameters was conducted using the InBody 770 device. To determine how body composition influences the postural status of the spinal column, a discriminant analysis was employed. The results showed that approximately 65.8% of children exhibit various types of postural disorders when assessing the alignment of the spine in the sagittal plane. The most prevalent disorder observed was hyperkyphosis, affecting 34.2% of the subjects, followed by kypholordosis at 16.4%. Moreover, the results demonstrated that body composition significantly influences body posture (p = 0.004). An increase in fat mass corresponds to a deviation from normal body posture, whereas an increase in the percentage of skeletal muscle mass and fat-free mass is associated with a reduction in postural abnormalities in the sagittal plane. Considering the results, it is clear that body composition parameters serve as more reliable predictors of the influence on body posture compared to simply calculating the body mass index. Furthermore, it can be concluded that there are consistent patterns of influence by specific body composition parameters, including fat mass, percentage of skeletal muscle, and fat-free mass, on body posture among children from various climates. These results underscore the significance of implementing strength exercises in children, particularly during periods of rapid growth and development, as a means of preventing and correcting postural disorders.

Background/Objectives: Today’s high school students often engage in sedentary behavior by choosing passive activities during leisure time. Increasing research shows that regular physical activity (PA) provides benefits beyond physical health, especially important during childhood and adolescence. Our study investigated the association between physical activity levels and academic performance (AP) in Serbian adolescents. Methods: We selected a sample of 836 fourth-grade high school students (avg. 17.9 ± 0.7 years old) who completed the IPAQ (short-version) and the Academic Performance Scale. Data analysis was conducted using IBM SPSS 21.0. Due to non-normal data distribution, Spearman’s correlation was used and hierarchical regression analysis to assess the association between PA and AP. Results: The findings revealed significant correlations between vigorous, moderate and light PA, as well as overall units of metabolic equivalent of task (METs), with AP (p-values: 0.000, 0.005, 0.021, 0.004, respectively), although with weak correlation coefficients (0.127, 0.098, 0.080, 0.181, respectively). Vigorous PA influenced AP by 10.1%, moderate PA by 8.2%, and light PA by 11.4%. Conclusions: These results suggest that adolescents engaging in higher PA levels tend to have better AP. This finding indicates a substantial association between PA levels and AP, with both moderate and vigorous PA showing a positive correlation and influence. Further investigation is necessary to comprehensively grasp the link between light PA and AP.

The aim of this study was to implement a familiarization protocol and to determine the constructive validity of four different non-reactive agility tests on a sample of professional female basketball players (n = 12; age: 18.17 ± 1.90 years). Following the protocol, the participants performed standardized tests three times (the Agility t-test and the Sprint 9-3-6-3-9 m with 180° Turns), while the lateral agility, universal agility, frontal agility, and semicircular agility tests were repeated five times each, with a three-minute rest period between each repetition. A single-factor analysis of variance for repeated measures (ANOVA) determined significant differences between a series of test repetitions for familiarization. Hierarchical cluster analysis grouped the samples based on the results of the standardized tests into two groups. A t-test for independent samples determined a significant difference between these groups (p < 0.05) on all four tests (lateral, universal, frontal, and semicircular agility). Pearson’s linear correlation determined a correlation between the results of the standardized agility tests and the lateral, universal, frontal, and semicircular agility tests, with correlation coefficients ranging from r = 0.936 to r = 0.987. A high value was observed for the discriminant analysis (0.821), while the maximum value was observed for the Kendall coefficient of concordance (W = 1). The study confirmed the validity of the applied tests and determined that the results are influenced by the number of series performed during the preparation for testing. In practice, it is necessary to perform two series of universal and frontal agility tests, i.e., four series of repetitions of lateral and semicircular agility tests in professional women’s basketball.

Keeping the head in a forward position can, in the long run, cause a postural disorder termed upper crossed syndrome - UCS. Upper crossed syndrome is defined as overactivity, or tightening, of the upper trapezius, major pectoralis and levator scapulae, combined with a weakened rhomboid, serratus anterior, middle and lower trapezius, as well as deep cervical flexors. This posture can result in neck pain, as well as upper back pain. The syndrome has been exacerbated with technological advancement, and the ever-increasing use of computers and smartphones. It affects school-age children, university students, as well as employees who work in an incorrect position or repeat the same actions throughout their working day. Physical exercise, namely, strength and stretching exercises, is one of the possible methods of correcting this postural disorder. Therefore, the objective of this study is to conduct a systematic review of studies to date in order to determine the effects of implementing different exercise programs on the treatment of upper crossed syndrome. The analyzed scientific papers were collected by searching online databases of electronic academic journals: Google Scholar, PubMed, Wolters Kluwer. The review focused on papers published between 2000 and 2019. Key words used for searching the databases included: upper crossed syndrome, effects, exercise program. Studies were included based on meeting the following criteria: examining the effects of different exercise programs on upper crossed syndrome, as well as on reducing neck and upper back pain, and improving functional ability. Based on the criteria set, a total of 15 studies were included in the final analysis. The final analysis established that upper crossed syndrome was affected most favorably by programs containing strength and stretching exercises, when these were administered over a 4-week period, with a minimum weekly frequency of 3 practice sessions

(1) Background: Research examining the combined influence of anthropometric characteristics, chronological age, and training age on motor performance in handball is limited. Given the sport’s demands and the participation of both adolescent and adult athletes, understanding these relationships is essential for talent identification, personalized training, and long-term athlete development. This study aimed to explore how these variables affect motor performance indicators such as speed, agility, and explosive power. (2) Methods: A cross-sectional study was conducted involving 29 male handball players. Anthropometric data (height and body weight), chronological age, and training age were collected. Motor performance was assessed using a 30 m sprint, a vertical jump test, and an agility test. (3) Results: Chronological age showed a strong positive correlation with training age (r = 0.819), and moderate correlations with height, body weight, vertical jump, agility, and sprint time. Training age was moderately correlated with vertical jump (r = 0.465) and agility (r = 0.439). Height and body weight were positively associated with sprint time. BMI exhibited low but consistent correlations with all motor tests. Regression analysis revealed that height significantly predicted sprint performance (β = 0.401, p = 0.033), while BMI was not a significant predictor. No significant regression models were found for agility or vertical jump performance. (4) Conclusions: The results suggest that both chronological and training age influence certain aspects of motor performance in handball players. Height may serve as a useful predictor of sprint ability, but anthropometric indicators such as BMI appear insufficient for explaining performance in agility or explosive power tasks. These findings support the use of multidimensional and individualized approaches in athletic assessment and training design.