The aim of the research was to determine, based on a systematic review of published studies that dealt with barriers to physical activity in adolescents, which are the most common barriers that stop adolescents from engaging in physical activity. Within the research original scientific studies are included, the ones that had male and female adolescents as a sample of respondents, studies related to the analysis of barriers that occur in adolescents, in which assessments were made on the basis of a questionnaire related to barriers. The research included studies from January 1, 2003 to July 2020. The final analysis, based on the set criteria, included 11 studies that were processed and presented. Most studies have shown that more internal barriers than external ones occur in girls comparing to boys, while external barriers are more common causes of not engaging in physical activity in boys. The three most common barriers among boys were: lack of company, lack of time and school obligations. Among girls, the most commonly reported barrier was "I'd rather do some other activities" and reporting a lack of time. The significance of this research is that it provides information on barriers in respondents who are adolescents, ie the reasons why their physical activity is reduced or they do not engage in physical activity at all. The significance of this research is that it provides information on barriers in respondents who are adolescents, ie the reasons why their physical activity is reduced or they do not engage in physical activity at all.

Background. Law enforcement officers may experience unique physical demands while on duty, including pursuing a suspect on foot, clearing obstacles, rapidly moving between covers, and engaging in physical confrontations with violent offenders. Several different change of direction speed (CODS) assessments are routinely used to simulate these demands. However, the relationship between these assessments has not been fully explored. Thus, this study investigated the association of shorter and longer distance sprint running with CODS performance. Methods. 15 police students ran the 20-m sprint test, 300-yard shuttle run, and Illinois Agility Test (IAT). Correlation and regression analyses were used to investigate associations. The effect size analysis provided the magnitude of associations. Results. Correlation analysis determined moderate association between 0-10 m, 10-20 m, and 0-20 m sprint performance with the IAT. The regression analysis determined strong linear association of IAT with sprint 0-10 m (R 2 = 0.488, F = 12.385, p = 0.004), sprint 10-20 m (R 2 = 0.496, F = 12.775, p = 0.003), sprint 0-20 m (R 2 = 0.573, F = 17.468, p = 0.001), and no linear association with the 300-yard shuttle run. Conclusions. The current study found a significant positive association between short sprints and IAT performance, suggesting that linear sprinting speed determines a significant proportion of CODS performance. Therefore, police students and officers should include sprint training in their physical fitness routine.

Regular physical activity can bring significant health benefits to people of all ages, and the need for physical activity does not decrease with age, but it has been proven that it can prolong a healthier and more independent life, prevent disability and significantly contribute to improving the lives of the elderly. In addition to the fact that each type of physical activity to a certain extent improves motor skills (strength, coordination, balance, agility, ...), mental health (self-esteem, quality of life) and reduces the risk of cardiovascular and all other causes of death, regular participation in exercise promotes mobility and functional independence in adults. A fall is an event in which a participant without their own intention comes to a lying position on the ground or at a lower level. Regardless of the health status of the individual, falls are associated with insufficient movement, reduced opportunities to perform daily activities (dressing, bathing, housework, ...) and the risk of being admitted to institutions where the care of dependent persons is taken. Arthritis, depression, cognitive impairment, vision, problems with balance and unbalanced gait, decreased muscle mass, as well as excessive use of medication increase the risk of falling. The total volume and type of physical activity needed by the elderly is not very well defined. However, it can be concluded that the combination of physical activity (strength training, endurance training, exercises for the development of balance and mobility, ...) and adequate nutrition (sufficient intake of essential amino acids/protein sources) is of crucial importance for preserving physical condition, motor skills and the health status of persons of the third age, and thus also in the prevention of falls. The aim of this study is to describe and find the best training programs for the prevention of falls in the elderly.

Cardiorespiratory endurance is associated with the development of cardiovascular and respiratory systems' ability to maintain and deliver oxygen to the engaged muscles during long-term physical activity, as well as the muscle ability to obtain required energy through aerobic processes. Physical activities of aerobic character give best results when performed 3-5 times a week. Training duration should be within 50-60 minutes. This way of exercising will surely lead to positive cardiorespiratory changes in both males and females. This paper uses introspection method to review relevant scientific literature concerning our topic of interest. We emphasize that physical activity has a significant influence on cardiorespiratory abilities, that is, it increases maximum oxygen uptake and personal fitness index, both of which are associated with the increased cardiorespiratory ability. Arterial blood pressure is significantly corrected; however, it is necessary to start engaging in physical activities on time for prevention purposes. Due to greater body engagement, physical activities represent one puzzle piece of crucial importance in maintaining cardiorespiratory health.

The development of fine motor skills of preschool children is extremely important, because this ability refers to the coordination of small muscle groups of the hands, which are used in performing tasks such as writing, coloring and cutting. The aim of this research is to determine the influence of phonetic gymnastics program on the development of fine motor skills of preschool children. The research was conducted on a sample of 30 respondents, children attending a younger educational group. The experimental program consisted of a phonetic gymnastics activities which consisted of three parts: introductory, main and final part of the activity, and was conducted for 12 weeks. The introductory part of the activity lasted for about five minutes and a complex of shaping exercises was conducted in it, followed by speaking exercises, e.g. imitating the blowing wind (whizz), the flying bee (buzz) and others. The main part of the activity lasted for 20 minutes, and in this part, various moving and speaking games and songs were used, in order to stimulate children's interest. For the purpose of this research, two subtests from the battery of BOT2 tests (Bruinkins – Oseretsky Test of Motor Proficiency, Second Edition) were applied: fine motor integration and manual dexterity. The obtained results confirmed the positive influence of programmed phonetic gymnastics on the fine motor skills of preschool children. The implementation of this type of treatment in preschool institutions would be of great benefit, especially because it is relatively short (about 30 minutes) and does not require special equipment and space.