https://hdl.handle.net/11436/9425 2026-06-29T00:22:55Z https://hdl.handle.net/11436/10926 The effect of table tennis exercises on mindfulness and psychological resilience of children and adolescents Çakır, Gökhan; Erol, Taner; Kırcı, Dursun Aim of this study is to examine the effects of table tennis exercises on mindfulness and psychological resilience in children and adolescents. The sample of this study consists of a total of 30 participants, including 15 athletes aged 10-17 who regularly participate in table tennis training in Sakarya province, and 15 students who do not participate in any table tennis training. The participants were administered the Mindfulness Scale for Children and Adolescents and the Child and Adolescent Resilience Scale Short Form. A quasi-experimental research design with a control group was employed in this study. At the end of the 8th week, the same scales were re-administered. This design allowed for the observation of differences and changes in the levels of psychological resilience and mindfulness between the two groups, who either participated in or did not participate in table tennis exercises, over the course of 8 weeks. Data were analyzed using SPSS 27 software. For hypothesis testing, the Paired-T Test was applied for dependent groups, and the Independent T-Test was used for independent groups. According to the findings, individuals who participated in table tennis exercises had significantly higher levels of mindfulness and psychological resilience compared to those who did not participate. After 8 weeks of training, the experimental group's mindfulness significantly increased, while the control group's mindfulness decreased. The results suggest that table tennis exercises have a positive effect on the mental and emotional development of children and adolescents, demonstrating potential as a complementary tool for enhancing psychological resilience and mindfulness. 2025-01-01T00:00:00Z https://hdl.handle.net/11436/10837 Best table tennis rubber selection using decomposed Pythagorean fuzzy-CODAS method Çakır, Gökhan; Çakır, Süleyman The use of qualified and correct material contributes positively to the performance of athletes. Therefore, sports club managers and coaches need to choose the materials and suppliers that will provide the best performance for their athletes. The selection of sports material is a challenging task that requires choosing among multiple alternatives, considering multiple criteria that require trade-offs. Multi-Criteria Decision Making (MCDM) techniques are the most appropriate tool to be used for this purpose. Decomposed Fuzzy Sets (DFSs) and Pythagorean Fuzzy Sets (PFSs) are among the most recent innovations in the literature of fuzzy sets. This study proposes the Decomposed Pythagorean Fuzzy (DPF) - Combinative Distance-based Assessment (CODAS) method, which combines DPFs and PFS, to select the best table tennis rubber for a table tennis club. The decision problem was solved using three different MCDM methods in addition to the proposed method and the rankings were compared. The application results indicate that the presented approach is a robust and practical framework for handling material selection and other MCDM problems. 2025-01-01T00:00:00Z https://hdl.handle.net/11436/9868 Psychological health in male athletes: the effect of perceived coaching behaviors on male athletes' anger and aggression levels Havadar, Tarkan; Kalkavan, Arslan; Özen, Gökmen Coaches are the main people who have an impact on the mental and psychological performance of athletes as well as their physical performance. The purpose of this study is to investigate the effect of perceived coaching behaviors on the anger and aggression levels of male athletes. This study was conducted with 748 licensed male athletes who are over 18 years of age and participate in individual and team sports branches. In this study, the “Coaching Behavior Assessment Questionnaire” and the “Competitive Aggressiveness and Anger Scale” were used as data collection tools. The study results showed that athletes’ levels of evaluation of the coaching behaviors were high, while the levels of aggressiveness and anger in sports were low. It was determined that there is a negative lowlevel relationship between the athletes’ evaluation levels of the coaching behaviors and the aggressiveness and anger levels in sports and that the coach’s behaviors predict the anger and aggressiveness levels of the athletes by 9% and 6%, respectively. The results of this study show that the attitudes and behaviors of coaches can affect the emotional states of male athletes and have the potential to increase or decrease their anger and aggressiveness levels. Coaches who exhibit positive, supportive and modeling behaviors help create a healthy sports environment and help male athletes maintain emotional balance. 2024-01-01T00:00:00Z https://hdl.handle.net/11436/9645 Spor bilimlerinde görev yapan akademisyenlerin kurumsal körlük ve i̇ş performansları arasındaki i̇lişki Özman, Cemal; Mergan, Barış; Ceyhun, Serdar; Aktaş Üstün, Neslişah Amaç: Bu çalışma, spor bilimleri alanındaki akademisyenlerin kurumsal körlük ve iş performansları arasındaki ilişkiyi incelemeyi amaçlamaktadır. Gereç ve Yöntemler: Çalışma, devlet ve vakıf üniversitelerinde çalışan spor bilimleri akademisyenlerini içeren bir örneklem grubuyla gerçekleştirilmiştir. Betimsel tarama modeli kullanılarak nicel araştırma yöntemiyle veriler toplanmıştır. Araştırma için 'Bireysel İş Performansı' ölçeği ile 'Kurumsal Körlük Ölçeği' kullanılmıştır. Veri analizinde iç tutarlık katsayıları hesaplanmış ve hipotez testleri olarak bağımsız örneklem t testi ve tek yönlü varyans analizi kullanılmıştır. Bulgular: Kurumsal körlük ve iş performansı ölçeği alt boyutları ile cinsiyet, üniversite türü, idari görev durumu, akademik birim ve akademik unvan arasında anlamlı bir farklılık bulunmadığını göstermektedir. Ancak, bireysel iş performansı ile kurumsal körlük arasında negatif yönlü ilişkiler olduğu tespit edilmiştir. Sonuç: Kurumsal körlüğün bireysel iş performansı üzerinde zararlı bir etkiye sahip olabileceğini ve işe yönelik tutumları, bilgi paylaşımını ve kurumsal yaratıcılığı etkileyebileceğini öne sürmektedir. Kurumsal körlüğün tanınması ve ele alınması, kurumsal başarıyı teşvik etmek için önemlidir. 2024-01-01T00:00:00Z