hasan ulas yavuz

Aims: The purpose of this study was to analyze and compare the prevalence, motivation for use, information and purchase sources of supplements among male competitive team sports athletes and recreational gym users in North Cyprus.Study Design: The sample size was calculated based on the total population size according to the reports obtained from the gyms and the records of the related federations (soccer, basketball, volleyball) of TRNC. For a confidence level of 95% and a confidence interval of 2.5%; the required sample size was calculated as 804. The study covered more participants to ensure the statistical power to remain over 80%. Calculations were performed with G* Power (for Mac Version 3.1. 9.3). Place and Duration of Study: 8 gyms located in 6 different districts in Northern Cyprus between june2020 and July 2020.Methodology: A structured questionnaire measuring prevalence and patterns of supplements was administered to 902 participants (329 gym attendants, 562 team sports athletes, 18-40 years old, men). Statistical differences between sex, age group and sports participation were done by using a Chi-square analysis. Differences were considered significant at a p-value< 0.05. Results: Overall, 54% of all subjects reported use of dietary supplements, showing a significantly higher percentage among gym attendants (62%) compared to team sport athletes (50%). The most popular dietary supplement among all subjects was protein (46.9%), followed by amino acids

ObjectiveThis study aimed to compare the anxiety and narcissism levels of different performance groups in female handball players.MethodsA total of 59 athletes between the ages of 15 and 37 participated in the study, taking the first 4 places from the Turkish Republic of Northern Cyprus senior women handball 1st league in the 2017–2018 season. Wingate peak power (WPP), Wingate average power (WAP), handball agility test (HAST), 10 m speed (10S), 20 m speed (20S), 20m shuttle run (SR), hands on waist vertical jump (HEVJ), hands free vertical jumping (HFVJ) test, Beck anxiety scale (BAI), 5-factor narcissism scale—short form (FFNI-SF), and sociodemographic data form were used. The athletes were divided into upper performance (UPG) and lower performance groups (LPG) using the median value according to the results of the physical measurement tests (FST).ResultsIt was determined that the anxiety …

Children have been participating in sports with the increasing numbers day by day. With the increasing rivalry, they are trying to find the ways to improve their performance to the best possible. As a result, the number of children who are adding resistance training to their training routines is also increasing. This raises myths about the harmful and risky nature of resistance training on children with many questions about its safety and effectiveness. Recent studies can remove doubts about the risk of injury, uselessness and ineffectiveness. With the proves from many studies for some decades, it is now accepted that properly controlled and supervised resistance training during childhood is not only safe and effective but also recommended by the world's leading healthcare and sports organizations for improving health and athletic performance. In the light of the scientific data, possible benefits, risks and application areas of resistance training for child athletes are discussed in this review.

Amaç Bu çalışmanın amacı, kadın hentbolcularda farklı performans gruplarının anksiyete ve narsisizm düzeylerinin karşılaştırılmasıdır. Yöntem Çalışmaya KKTC Büyük Kadınlar Hentbol 1. Liginden 2017-2018 sezonunda ilk dört sırayı almış, 15-37 yaşları arasında, 59 sporcu katılmıştır. Sporculara Wingate Zirve Güç, Wingate Ortalama Güç, Hentbol Çeviklik Testi, 10 m Sürat, 20 m Sürat (20SR), Mekik Koşusu, Eller Belde Dikey Sıçrama (EBDS), Eller Serbest Dikey Sıçrama (ESDS) testi, Beck Anksiyete Ölçeği, Beş Faktör Narsisizm Ölçeği-Kısa Form ve Sosyodemografik Veri Formu uygulanmıştır. Sporcular Fiziksel Ölçüm Testleri sonuçlarına göre ortanca değer bulunarak üst performans (ÜPG) ve alt performans gruplarına (APG) ayrılmıştır. Çalışmada ki-kare testi, t-testi, Pearson Korelasyon analizi ve çoklu regresyon analizi istatistik yöntemleri kullanılmıştır. Bulgular Çalışmada APG’deki katılımcıların anksiyete düzeyinin ÜPG’ye göre daha yüksek olduğu saptanmıştır. ÜPG’deki katılımcıların narsisizm düzeyinin ise APG’ye göre daha yüksek olduğu bulunmuştur. ÜPG’deki sporcularda, onay arayıcılık, kibir, lider/otorite, güvensizlik, hak iddia etme, teşhircilik, umursamazlık, empati eksikliği ve maceraperestlik puanlarının APG’ye göre yüksek olduğu saptanmıştır. Korelasyon analizinde anksiyete ile 20SR arasında pozitif ve düşük düzeyde ilişki, EBDS arasında negatif ve düşük düzeyde anlamlı bir ilişki bulunmuştur. Narsisizm ile WPP, ESDS ve EBDS arasında pozitif yönde düşük düzeyde anlamlı ilişki bulunmuştur. Anksiyete ve narsisizm değişkenlerinin fiziksel performans ortalama puanı üzerinde yordayıcı etkisinin olduğu ortaya konmuştur. Sonuç …

BACKGROUND/AIMSThe use of dietary supplements is common among adolescents in many countries. This study aimed to determine the prevalence and underlying reasons of usage and sources of information about dietary supplements among public high school students in North Cyprus.

Machine learning models are implemented to perform tasks that human beings have difficulty completing. The analysis and prediction of players' performance of specific athletic tasks have increasing importance in both game and training planning. The diversity and complexity of specific types of athletic performance and the mostly nonlinear relationships between them make analysis and prediction tasks complicated when using conventional methods. Therefore, the use of effective machine learning models may contribute to the ability to achieve high accuracy predictions of players' athletic performance. The aim of this study was to evaluate different machine learning models for predicting particular types of athletic performance in female handball players and to determine the significant factors influencing predicted performances by using the superior model. Linear regression, decision tree, support vector …