<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> A soccer player with good ball control is the one who is able to perform complex coordinated situational motor actions in a certain space and in as short time period as possible. The analysis included variations in the angle of the knee joint of the leg receiving a ball (AKLR), angle of the knee joint of the supporting leg (AKLS), angle between thighs (ABT), trunk bending angle (TBA), hip joint point height (HPH), and ball distance after controlling the ball (BDAC) between effective and ineffective passing in soccer.
<bold>Material and Methods.</bold> A total of 12 university soccer players (age: 20.8 ± .83 years old, experience: 4.7 ±.78 years) voluntarily participated in the study. The players made five attempts to control the ball with the inside foot. The best attempt was analysed for each case (effective and ineffective).
<bold>Results.</bold> The degrees of AKLR, AKLS, ABT, TBA and HPH were significantly greater in effective passing than those in ineffective passing; the observed effect sizes were 4.87, 2.53, 1.77, 3.98, and 3.40, respectively. BDAC was meaningfully greater at ineffective passing (effect size: 2.03).
<bold>Conclusions.</bold> There were significant differences in the values of kinematic variables used to test ball control by effective and ineffective passes (p &lt; 0.05). The research sample, in terms of the values of kinematic variables, achieved noticeable progress during the performance of ball control for effective passing, which showed its effectiveness in reducing the distance after controlling the ball.
</abstract>

Department of Physical Education and Sports Sciences

Relationship Between Passing and Ball Control in Soccer: Analysis of Variations of Kinematic Measures

<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> This was a cross-sectional study aiming to test the reliability of a new reactive agility test designed for youth volleyball players to improve both reaction time and hand-eye coordination.
<bold>Material and methods.</bold> Twenty-four youth volleyball athletes (15 girls and 9 boys) were recruited to participate in this study (age: 11.58 ± 2.20 years old). This study used a FitLight Trainer (FITLIGHT Sport Corp., Ontario, Canada), a wireless system using interconnected light-powered sensors, to measure reaction time and hand-eye coordination. The subjects performed the hand-eye coordination test twice, exactly one week apart, for 30 seconds, with three trials performed for each test. Repeated measures ANOVA was used to test the variation of the six trials performed during the two sessions.
<bold>Results.</bold> The analysis comparing the sessions revealed significantly longer reaction time in session 1 than in session 2 (mean difference: 47.85 [95% CI: 10.86 to 84.84]; p &lt; 0.012; ES = 0.128). Across the different trials, the greatest single ICC measure (ICC = 0.645) and average ICC measure (ICC = 0.784) were achieved in trial 3. Across the sessions, the greatest single ICC measure (ICC = 0.951) and average ICC measure (ICC = 0.863) were achieved in session 2.
<bold>Conclusions</bold>. FitLight Trainer is a valid and reliable tool for developing reaction times of youth volleyball athletes.
</abstract>

Department of Physical Education and Sport, UPV-EHU

Reliability of a Reactive Agility Test for Youth Volleyball Players

<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> Addiction is a chronic disease that needs time-consuming treatment. The medicines used to stop or reduce the tendency have not been successful so far. The purpose of this study was to investigate the effect of six weeks of aerobic training (morning and afternoon) on some brain neurotransmitters, brain-derived neurotrophic factor and quality of life in addicted females.
<bold>Material and Methods.</bold> Thirty subjects were selected and divided into intervention (n = 15) and control (n = 15) groups. The aerobic training program consisted of six weeks of aerobic training, 3 sessions per week, and each session lasted for 45 to 60 minutes with a maximum intensity of 50-70% of the maximum heart rate. Paired sample t-test and ANCOVA were used to compare between- and within-group variance changes.
<bold>Results.</bold> Weight levels, body mass index and body fat percentage significantly decreased (p &lt; 0.05), while the serum levels of serotonin, dopamine and brain-derived neurotrophic factor (BDNF) increased significantly. The maximum oxygen consumption and quality of life increased significantly at the end of the period. Changes in intra-group mean in weight, body mass index, body fat percentage, dopamine, BDNF, maximum oxygen consumption, physical limitation, general health, vitality, social activity, physical and emotional function and life satisfaction are significantly different between experimental and control groups (p &lt; 0.05).
<bold>Conclusions.</bold> Six-week aerobic training performed in the morning and afternoon reduces body composition indicators and increases brain neurotransmitters, quality of life and maximum oxygen consumption in addicted females. Therefore, it can be effective in improving physical and mental health.
</abstract>

Department of Sport Sciences, Bojnourd Branch

Department of Physical Education and Sport Sciences

The Impact of Aerobic Training on Some Brain Neurotransmitters and Brain-Derived Neurotrophic Factor in Addicted Women

<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> Core muscle activity is a necessary requirement in most sports. However, its role in archers has not been studied. Therefore, this study sought to determine muscle activity of Transversus abdominis (TA) and Multifidus (MF) and co-contraction index (CCI) using surface electromyography (s EMG) during different phases of shots in archers with different levels of training.
<bold>Material and Methods.</bold> It was an observational study with a cross-sectional design. Twenty-eight healthy male archers were recruited and grouped according to their level of training: Group A (Beginners (n = 9)), Group B (Trained (n = 10)), Group C (Elite (n = 9)). The muscle activation (%MVIC) for MF and TA for 10 successive archery shots (distance: 10 meters in 200 seconds) was recorded using s EMG for all the phases of the shots along with CCI.
<bold>Results.</bold> Three-way ANOVA revealed a significant difference for TA activity within groups (p ≤ 0.001) and phases (p = 0.002), A significant difference for MF activity was found within groups (p ≤ 0.001). A significant difference for CCI was found between groups (p ≤ 0.001) and in the interaction between phase × shot (p = 0.001).
<bold>Conclusions.</bold> The findings of the study showed that elite archers had more activity of the core muscles (TA and MF) and their CCI was found to be much higher with respect to the trained and beginner archers. Therefore, it is essential to incorporate dynamic stabilization exercises into archery training.
</abstract>

Jamia Millia Islamia University, Centre for Physiotherapy and Rehabilitation Sciences

EMG Activity of Transversus Abdominis, Multifidus and Co-Contraction Index in Different Phases Amongst Varied Level Archers: A Cross-Sectional Study

<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> Alpine skiing is one of the most dangerous winter sports that entails a high number of injuries, most commonly affecting the knee. Kinesiophobia is a condition in which an individual experiences fear of physical movement and activity as a result of feeling susceptible to injuries or recurrent injuries. The objective was to examine the level of kinesiophobia in skiers who have sustained knee injuries.
<bold>Material and methods.</bold> The sample consisted of 22 female and 11 male professional skiers, with the average age of 24 ± 7.391 years. For the purpose of the assessment, the Tampa scale for kinesiophobia (TSK) was employed.
<bold>Results.</bold> The number of knee injuries in skiers totals at least 1 and 11 at most, on average 2.45, most commonly involving the anterior cruciate ligament and meniscus. There were no significant differences between the left and the right knee or bilateral injuries. The average score in the TSK totals 36 points, which is close to the critical threshold of 37 points. 36% of the participants possess a high level of kinesiophobia. With respect to the general level of kinesiophobia, no significant differences were found in relation to gender, with regard to the number of surgeries or whether one or both knees were affected by injuries. Older skiers have also been found to have significantly lower fear of recurrent injuries.
<bold>Conclusions.</bold> The number of knee injuries in skiing is high and aggravating, in such a way that almost one third of skiers that have sustained knee injuries experience a critical level of kinesiophobia, and that requires intervention. During rehabilitation, psychological support should also be provided to athletes in order to prevent or reduce kinesiophobia and thus prevent recurrent or new injuries.
</abstract>

Kinesiophobia in Skiers with Knee Injuries

<abstract xmlns="http://www.w3.org/1999/xhtml">

<bold>Introduction.</bold> Tourism enterprises operating in a dynamic environment mitigate the erosion of competitive advantages by introducing new products, processes or marketing activities. Universities may serve as one of the essential sources of knowledge, enabling tourism enterprises to implement innovations. The article aims to identify the importance of cooperation with universities in driving innovation in tourism enterprises.
<bold>Material and methods.</bold> To achieve the aim of the paper, an empirical study was carried out on a sample of 383 hotels and tour operators.
<bold>Results.</bold> As a result, it was found that universities play a relatively minor role in innovation implementation and for inspiring innovative activity. However, the role of universities is highly diversified. For almost one-third of the entities, universities are important for innovative activities – they play a greater role in large entities, belonging to chains and operating longer on the market. It has also been identified that incremental and marketing innovations are most frequently created due to cooperation.
<bold>Conclusions.</bold> Results indicate that for increased universities’ role in innovation, companies’ resources and absorption capacity are required. The article also suggests further directions of research on relations between universities and tourism enterprises.
</abstract>

Effect of Cooperation with Universities on the Innovativeness of Tourism Enterprises

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Polish Journal of Sport and Tourism

The Polish Journal of Sport and Tourism (ISSN: 1899-1998, e-ISSN: 2082-8799) publishes manuscripts in Polish and English encompassing external various fields of medical and health sciences, physical culture and natural sciences linked with sport, physical education, sports medicine as well as tourism and physical recreation.  The journal publishes the following types of papers:    original research papers (maximum 12 standard pages of typescript, including tables, figures, references and abstract),  review papers commissioned by the Editor (maximum 20 standard pages of typescript, including documentation),  short communications (maximum 3 standard pages of typescript plus one table or figure and up to 5 references),  letters to the Editor expressing an opinion on previously published manuscripts or a comment connected with the journal’s issues (maximum 2 standard pages of typescript),  news (information on conferences, abstracts of Ph.D. thesis and Post-Doc. thesis, book reviews, biographical notes),  advertisements that may be printed on separate pages of the periodical (prices are subject to individual negotiations).   Why subscribe and read   High standard of contents;  Good publishing quality available in both forms, electronic and printed;  The journal presents the views of all scientific disciplines dealing with physical education, recreation, tourism, health and fitness, and sport science;   Why submit   Indexed in abstracting databases and evaluated by Polish Ministry of Science and Higher Education;  Fair and constructive peer review by experts in the field;  The journal is developing very rapidly;   The journal does not have article processing charges (APCs) nor article submission charges;   Rejection Rate   80%   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.  