درخت حوزه‌های تخصصی

This study examines whether the geographic distribution of lacrosse talent, as indicated by NCAA Division I All-American awards, has shifted from traditional hotbed states Maryland and New York to other regions over the past 25 years. Data on NCAA Division I All-American lacrosse players from 2000 to 2024 were collected and divided into five periods: 2000-2004, 2005-2009, 2010-2014, 2015-2019, and 2020-2024. The number and percentage of award winners from each state were calculated, and the number of states represented each year was tracked. This was compared with the growth in high school lacrosse participation. Maryland and New York's dominance decreased from 75.0% of All-American winners in 2000-2004 to 39.1% in 2020-2024. Concurrently, high school lacrosse participation grew from 46,206 in 2002-2003 to 107,865 in 2021-2022. The number of states represented increased from 8 in 2002 to 16 in 2024, indicating broader talent distribution. The decreased dominance of Maryland and New York suggests a diversification of lacrosse talent, aligning with nationwide participation growth and more states producing All-American players. This diversification highlights the successful expansion of the sport, ensuring a more inclusive talent pool and reflecting the positive impact of increased access to lacrosse across the country. Lacrosse development programs and recruitment strategies should expand beyond traditional hotbeds to support emerging regions, fostering a more inclusive and diverse talent pool, and enhancing the sport's growth at all levels.

The purpose of this study is to investigate the factors affecting sport tourism marketing mix. The research method was descriptive – correlation and the statistical sample consisted of 265 sport tourists attended at Azadi stadium in Tehran for watching a football game between Esteghlal and Persepolis that were selected through clustering technique. The research instrument was a questionnaire developed by Shonk (2006). The face and content validity was approved by sport management experts and the reliability was verified by Cronbach’s alpha (α=0/89). The SPSS16 was used for description of variables, and LISREL software was used for conducting Confirmatory Factor Analysis. The result showed that “product” had the most effect on sport tourism marketing mix. “Physical evidences” was the next important variable influencing sport tourism marketing mix. Moreover, “promotion”, “people”, “process”, “price”, and “place” had significant effects on sport tourism marketing mix. According to the results it can be concluded that according to sport tourists’ view point, “product” and “physical evidences” had more importance. Product includes quality of sport contests and its’ related components, and physical evidence refers to the quality of sport stadium and its’ related factors. Also, other variables such as promotion, people, process, price and place had significant effect on the sport tourism marketing mix that should be taken in granted in sport tourism management context.

Background: High-velocity low-intensity actions result in reduced hemodynamic responses. Additionally, eccentric actions are associated with reduced hemodynamic and metabolic responses. Aim: This study aimed to investigate acute hemodynamic, hematological, and electrocardiographic responses to high-velocity low-intensity concentric resistance exercise (HVLICRE) and low-velocity high-intensity eccentric resistance exercise (LVHIERE) in healthy young adults. Materials and Methods: In this study, 16 healthy young men were divided into two groups (HVLICRE: 40% 1RM, LVHIERE: 80% 1RM). The exercise protocol consisted of five sets of 10 repetitions, with 90 sec of rest between the sets and a two-second interval between actions. For data analysis, repeated measures ANOVA, one-way ANOVA, and Bonferroni's post hoc test were performed at a significance level of P ≤0.05. Results: LVHIERE led to greater RPE ( P ≤0.05), compared to HVLICRE. Also, LVHIERE was associated with a significant increase in the activity of the sympathetic nervous system and a significant decrease in the parasympathetic nervous system as compared to HVLICRE ( P ≤0.05). Conclusion: HVLICRE and LVHIERE produced similar effects on blood glucose, serum lactate, hematocrit, systolic and diastolic blood pressure and heart rate. LVHIERE can be investigated as part of the strategy of rehabilitation programs in future studies.

The purpose of the current research was to investigate and prioritize the promoting and inhibiting factors in the development of women's professional basketball in Khorasan Razavi, Iran. This is a mixed study conducted with an exploratory-analytical approach. In the qualitative part of the research, the interviewees included sports management professors, prominent basketball pioneers in Khorasan Razavi province, professional female basketball players, as well basketball boards’ managers and representatives. In the quantitative phase, the statistical population included professional female basketball players, coaches, and basketball pioneers in Khorasan Razavi. In general, 8 interviews and 134 questionnaires were collected in the research process. The qualitative data was analyzed through the content analysis method while the quantitative data analysis process was completed by using SPSS software (v. 22) and exploratory factor analysis, as well as Friedman's ranking tests. The findings of the research revealed that out of 48 items obtained as effective factors on the development of women's professional basketball in Khorasan Razavi province, 25 items were considered as promoting factors and 23 items were found as inhibiting factors. Also, based on the results of the exploratory factor analysis test, 6 promoting factors ("socio-cultural factors", "technical level", "basic factors", "expert human resources", "competition and event", and "scientific indicators") and 5 inhibiting factors ("financial issues", "motivational supportive factors", "facilities factor", "club ownership" and "management perspective”) were identified. "

Purpose: Haematological, hormonal, biochemical and physical performance parameters were altered after long-term soccer training in professional soccer players. These alterations can be influenced by different contextual factors such as playing surface, training load, duration of training and competition. The purpose of this study was to investigate the changes in the haematological, inflammatory, antioxidant and physical performance of beach soccer players during the competitive season of the beach soccer. Method: The study examined 15 elite beach soccer players in Iranian beach soccer primer league (age 24.64 ± 4.01 y, weight 75.08 ± 8.15 kg, height 181.00 ± 5.17 cm, body mass index 22.76 ± 2.36) from the pre-season, mid-season and end-season. Measurements of haematological, inflammatory, antioxidants indices and aerobic / anaerobic power were repeated in the pre-season, mid-season and end-season. Repeated-measures analysis of variance was used to examine indicators change during league season. Results: Significant decrease in SOD (p = 0.001), TAC (p = 0.043) and anaerobic power (p ≤ 0.048) and significant increase in GPx (p = 0.001), ALT (p = 0.022) was observed from pre-season to the end of the season. LDH levels showed a significant increase in the mid-season compared to the pre-season (p = 0.042) and a significant decrease at the end of the season compared to the mid-season(p = 0.014). However, no significant changes were observed in other indices during the competition season(p ≥ 0.05). Conclusions: It is suggested that some physical and physiological fatigue markers ar increase during mid-season. Therefore, beach soccer players may be  monitored  continuously during the competition season in order to be able to provide the best training, nutrition and recovery systems for performance optimization. Coaches may use the interplay between biomarker alterations and physical performance changes to better manage workload and monitor fatigue during beach soccer training and competition.

Purpose: This study was conducted aiming to investigate the effect of selected TRX and Pilates training on balance parameters, fatigue index, and quality of life in female patients of multiple sclerosis. Method: In this study, 30 female patients with MS in Isfahan city with an average age of 37.41 ± 7.57 years and a history of MS of 11.31 ± 3.77 years and an Expanded Disability Status Scale of 0.84 ± 1.81 were placed in three groups including control, TRX and Pilates groups. The training program consisted of eight weeks including 3 sessions of 60 minutes of exercise per week. In order to investigate balance, fatigue, and quality of life, the Berg test, Fatigue Severity Scale, and Multiple Sclerosis Quality of Life were used respectively. SPSS version 25 software was used for statistical analysis. Results: The results of this study have shown that both exercise programs have led to a significant improvement in the mean parameters of balance (P < 0.005), fatigue (P < 0.005), and quality of life (P < 0.001). Conclusions: Considering the noticeable impact of these training protocols on the quality of life, balance and fatigue, these interventions can be considered as an efficient and cost-effective methods to improve health condition in MS patients.

Abstract Introduction: This study aimed to investigate the predictive role of psychological factors in the incidence of sports injuries (musculoskeletal) of elite male volleyball players. Methods: This was a descriptive-correlational research study design. The study was conducted with 150 elite male volleyball players in the Premier League of Khorasan Razavi province in 2020. In order to collect data, three standard questionnaires including, Sports Injuries Questionnaire (Esmaeili, 2014), Personality Traits Questionnaire (Eysink, 1975), and Competitive State Anxiety Questionnaire (CSAI-2) Rainer and Martens (1990) were used. In order to analyze the data in this study, SPSS software version 23 was used. Results: The results show that competitive anxiety can explain sports injuries (musculoskeletal) in the first model.. In the second model, when the somatic anxiety variable is added; Competitive anxiety and somatic anxiety variables can explain sports injuries. In the final model, the factors of competitive anxiety, somatic anxiety, self-confidence, risk-taking, excitement, and aggression can explain sports injuries. Conclusion: Therefore, it can be said that psychological factors play a role in the incidence of sports injuries (skeletal-muscular) of elite male volleyball players

Purpose: The objective of this study is to analyse various articles on the effect of various types of exercise on the angiopoietins family and angiopoietin-like proteins (ANGPTLs). Methods: PubMed, Science Direct, Scopus and Google Scholar databases were searched from 2000 to September 2020. After screening the articles, 19 articles that met the inclusion criteria were studied and analysed. Results: In our body, four types of angiopoietin and eight types of angiopoietin-like proteins have been identified, the functional method of some of them which are still not entirely understood. Angiopoietin-1 and angiopoietin-2 are essential regulators of vascular formation and maintenance. Angiopoietin-1 is found in perivascular and vascular cells within and around smooth muscle cells and plays an important role in growth, vascular stability, and pathological angiogenesis. On the other hand, angiopoietin-2 and angiopoietin-3 are mainly involved in inducing vascular regression, cell death, and inflammation. Angiopoietin-4, like angiopoietin-1, is responsible for the maturation, stabilization, and stasis of blood vessels. Conclusion: Studies show that exercise has a significant effect on increasing capillary density in the human body by increasing angiopoietin as one of the angiogenesis factors. In addition, there are many other benefits such as contribution to fat burning and treatment of coronary artery disease, cancer, asthma, and ischemia. More research is needed on the effects of different types of exercise training on angiopoietins.