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Araştırmacılar(29)

• Abış, Selmani
• Albayrak, Ahmet Yılmaz
• Altunbaş, Adem
• Ateş, Zeynep Hazal
• Aydın, Elif
• Aydın, Mustafa
• Bayrakdaroğlu, Serdar
• Bayrakdaroğlu, Yeşim
• Can, İbrahim
• Demir, Salih
• İşbilir, Emine
• Karakuş, Ebru
• Koç, Haluk
• Koç, Mine
• Koç, Mustafa
• Kusan, Osman
• Menteş, Görkem
• Menteş, Kem
• Peker, Alper Tunga
• Sahin, Oktay
• Sever, Mehmet Onur
• Sever, Mehmet Onur
• Somoğlu, Mustafa Barış
• Tezcan, Efecan
• Turkay, Hikmet
• Türker, Üstün
• Türkmen, Muhammed Uhud
• Türkmen, Muhammet Uhud
• Zambak, Ömer

• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10503
  Effects of psychological skills training on self-control, perceived physical self-defense capacity, and mental toughness in elite female wrestlers: a randomized controlled trial

  Tutal, Varol; Demir, Okan; Sahin, Oktay; Albayrak, Ahmet Yilmaz; Bayansalduz, Mehmet; Uzun, Recep Nur; Öz, Faik; Sahinler, Yunus; Ceylan, Levent; Yilmaz, Coskun

  Background Self-control, self-defense self-efficacy, and mental resilience are fundamental psychological determinants of performance and competitive endurance in combat sports. However, scientific evidence on structured, evidence-based psychological intervention programs for professional female wrestlers remains limited. This study examined the effects of a psychological skills training (PST)-based intervention on self-control, self-defense self-efficacy, and mental resilience in professional female wrestlers. Methods A randomized controlled pre-test-post-test design was employed. Thirty-six professional female wrestlers (aged 18-25) were randomly assigned to a PST group (n = 18) or a control group (CG; n = 18). The PST group completed an 8-week structured psychological intervention alongside regular training, while the CG continued routine training only. Self-control, self-defense self-efficacy, and mental resilience were assessed pre-and post-intervention using valid and reliable psychometric scales. Data were analyzed via repeated-measures ANOVA, with effect sizes calculated. Results Significant group & times; time interactions were observed across multiple outcomes. A highly significant interaction emerged for perceived physical self-defense capacity (SP; F(1,34) = 56.525, p < 0.001, eta p(2) = 0.624) and for DP scores (F (1,34) = 9.360, p = 0.004, eta p(2) = 0.216). Among self-control subscales, significant interactions were found for inhibition (F (1,34) = 8.172, p = 0.007, eta p(2) = 0.194) and, more strongly, for initiation (F (1,34) = 14.157, p < 0.001, eta p(2) = 0.294). For mental resilience, highly significant interactions were detected for confidence (F (1,34) = 59.976, p < 0.001, eta p(2) = 0.638), control (F (1,34) = 32.486, p < 0.001, eta p(2) = 0.489), and persistence (F (1,34) = 32.709, p < 0.001, eta p(2) = 0.490). Overall, the intervention demonstrated medium-to-high effect sizes across psychological performance indicators. Conclusion These findings suggest that PST may serve as a useful complementary approach for enhancing self-control, perceived physical self-defense capacity, and mental toughness in professional female wrestlers. However, results should not be interpreted as evidence of improved competitive wrestling performance, technical success, or objectively measured physical self-defense ability, as these outcomes were not directly assessed in this study.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/16456
  The mediating role of physical self-perception and the moderating effect of gender in the association between physical activity and psychological well-being among young recreational participants

  Ekizoglu, Ozlem; Tetik, Sibel; Zambak, Omer; Temur, Canan Sayin; Can, Yusuf; Isik, Utku; Koc, Mustafa Can

  Background/objective Psychological well-being disorders are increasingly prevalent among young people. While physical activity is known to benefit psychological well-being, the mechanisms-particularly the role of physical self-perception and gender in recreational context remain underexplored. Grounded in the Conservation of Resources (COR) Theory, this study investigates the mediating role of physical self-perception in the relationship between recreational physical activity and psychological well-being and examines whether gender moderates this mediation among youth aged 15-24.Methods A descriptive-relational survey design was employed. The sample comprised 468 young adults (58.5% male, 41.5% female; M_age = 20.08) who regularly participated in recreational physical activities. Data were collected using the International Physical Activity Questionnaire-Short Form (IPAQ-SF), the Physical Self-Perception Profile (PSPP), and the Warwick-Edinburgh Mental Well-being Scale (WEMWBS). Mediation and moderation analyses were conducted using PROCESS macro-Models 4 and 7.Results The direct effect of physical activity on psychological well-being was not significant. However, physical self-perception fully mediated the relationship between physical activity and psychological well-being (indirect effect: beta = 0.219, 95% CI [0.151, 0.290]). Among the sub-dimensions of physical self-perception, body attractiveness had the strongest mediating effect. Moderation analysis revealed that gender did not significantly moderate the mediation pathways (a path: p = 0.156; b path: p = 0.954). The mediation mechanism operated with similar strength in both males and females.Conclusion Recreational physical activity improves psychological well-being entirely through the enhancement of physical self-perception, supporting the COR theory that physical activity acts as a resource investment. This mechanism is universal across genders in recreational settings. Interventions aiming to improve youth psychological well-being should not only promote physical activity but specifically focus on fostering positive physical self-perception and body image in inclusive, non-judgmental environments.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10515
  Effects of Halotherapy as an Adjunct to Preseason Training on Respiratory and Aerobic Outcomes in Elite Female Football Players: A Randomized Controlled Trial

  Sarisik, Derya Cetin; Aydin, Ahmet Serhat; Söyler, Mehmet; Zileli, Raif; Özkurt, Ali; Yilmaz, Coskun; Küçük, Hamza; Karatas, Mevlut

  Background: Aerobic capacity and respiratory efficiency are critical determinants of performance in elite female football, characterized by repeated high-intensity efforts and rapid recovery demands. Halotherapy, involving the inhalation of dry salt aerosol, has been shown to improve pulmonary health; however, its effects on exercise-related outcomes in athletic populations remain insufficiently investigated. This study aimed to examine the effects of a 12-week post-training halotherapy intervention on respiratory muscle strength, pulmonary function, and aerobic performance in elite female football players. Methods: Twenty-eight elite female football players competing in the Turkish Women's First League were randomly assigned to a halotherapy group (HG, n = 14) or a control group (CG, n = 14). Both groups completed an identical preseason training program, while the HG additionally performed 45 min halotherapy sessions three times per week in a controlled halochamber. Pre-and post-intervention assessments included maximal inspiratory and expiratory pressures (MIP, MEP), spirometric parameters (FVC, FEV1, PEF, MVV), and maximal oxygen uptake (VO(2)max) estimated using the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IRT1), along with total distance covered. A 2 & times; 2 mixed-model ANOVA was used to assess time and group & times; time interaction effects. Results: Significant group & times; time interactions were observed for MIP, MEP, VO(2)max, FEV1, PEF, MVV, and Yo-Yo IRT1 performance (p < 0.05), with large effect sizes (eta p(2) = 0.269-0.924), favoring the halotherapy group. Forced vital capacity (FVC) increased over time in both groups (p = 0.141), with no significant interaction effect. Changes in the control group were comparatively smaller across most outcomes. Conclusion: Post-training halotherapy was associated with improvements in respiratory muscle strength, ventilatory function, aerobic capacity, and intermittent running performance in elite female football players. These findings suggest that halotherapy may be considered as a complementary, non-invasive strategy to support respiratory and aerobic adaptations. Further research is required to confirm these findings and to clarify the underlying physiological mechanisms. Trial registration: NCT07406386; 6 February 2026.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10619
  YOLOv8 computer vision for automated offside detection in professional football validated through supervised learning

  Abdel-Fattah, Abdul-Rahman; Belhaouari, Samir Brahim; Ceylan, Halil Ibrahim; Bayrakdaroglu, Serdar; Muntean, Raul Ioan; Dhahbi, Wissem; Dergaa, Ismail; Omri, Abdelfatteh El

  Offside calls are integral to maintaining fairness and competitive integrity in football, yet current officiating processes are constrained by limitations in accuracy despite technological advancements. This investigation developed and validated an automated offside detection system using YOLOv8 object detection architecture to address documented limitations of Video Assistant Referee (VAR) systems in offside decision accuracy. Supervised learning validation employed 400 annotated instances from professional match footage. The YOLOv8 medium variant was configured for four-class detection, with a focus on extreme player positions, reducing computational complexity by approximately 70% relative to comprehensive player tracking while accepting accuracy trade-offs in marginal scenarios. The system was optimized for computational efficiency through highly accurate tracking of player positions. Data were partitioned into 40% (n = 160) for training and 60% (n = 240) for testing, with 5-fold cross-validation. The automated system achieved robust performance metrics across 240 test instances: overall accuracy of 83.0%, precision of 85.0%, recall of 87.0%, and F1-score of 86.0%. Confusion matrix analysis revealed true positives (n = 130), true negatives (n = 70), false positives (n = 22), and false negatives (n = 18). Individual case analysis demonstrated 80% agreement with ground truth classifications. System performance significantly exceeded the random classification baseline (p < 0.001). The strategic extreme player tracking approach achieved substantial computational efficiency while maintaining decision accuracy across diverse match scenarios. A YOLOv8-based offside detection system demonstrates proof-of-concept feasibility for decision-support applications in football officiating. Performance (83% accuracy, 95% CI: 79-87%) on 240 test instances remains below professional benchmarks (> 93%), with single-camera constraints and limited dataset size restricting generalizability to proof-of-concept validation rather than operational deployment.

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• MakaleYalnız künye2026Scopus SJRQ4/r/gumushane/10437
  The Effect of Match Running on Team Success in Professional Soccer

  Tokul, Erdi; Mülazimoglu, Olcay; Özkara, Abdullah Bora; Özçilingir, Ozgun Mirac; Somoglu, Mustafa Baris; Turan, Cagatay; Baskaya, Gizem; Erdem, Kamil

  This study aimed to examine match running performance (RP) in professional soccer teams in terms of success variables. A total of 626 observations obtained via a multicamera tracking system (InStat Ltd.) from a total of 323 matches played by 19 teams in the Turkish Super League (TSL) during a season were analyzed. The success of the teams was examined as two different independent variables: i) according to the endof-season final table ranking (1st rank: the first five teams that have qualified for the European League; 2nd rank: the second rank five teams; 3rd rank: the third rank five teams; and 4th rank: the four relegated teams). ii) According to the match outcome (win, draw, loss). The RP variables included total distance (TD), covered distance in five speed zones (walking, jogging, running, high-speed running (HSR) and sprinting), high-intensity acceleration (HIA) and maximum acceleration. ANOVA and post hoc tests revealed that 1strank teams were significantly more common in running, HSR, sprinting and acceleration (p < .05). There was no difference between the TD groups (p > .05). The TD, walking sprinting and max. acceleration values of the winning teams were greater (p < .05). The short-term success goal for teams is to win a match or score a point, and the long-term goal is to be at the top of the final table in the season. Therefore, the current research revealed that high-intensity RPs and high intensity acceleration in matches are especially decisive in the success of teams.

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• MakaleYalnız künye2026/r/gumushane/16322
  Comparative Tactical Paradigmsin Football: Insights FromScandinavian, Baltic, and TurkishCoaching Models

  Eroglu, Seref; Toktas, Sermet; Çaglar, Esin Cagla; Ünlü, Cisem; ÇevIker, Abdulkerim; Zambak, Omer

  The goal of this study was to compare the tactics expertise paradigms and game-reading skills of elite football coaches with different geographical and cultural back-grounds, based on empirical data. In total, ten elite football coaches participated in the study. All participants had at least 10 years of coaching experience and had either UEFA Pro or A license. Coaches came from the following football federations: Scandinavian (n = 4) , Baltic (n = 3) , and Turkish (n = 3) In order to gather empirical data regarding the knowledge of coaches about theory and methods in cri-sis situation (tacit knowledge), we used the interview form comprising of 25 ques-tions. The Kruskal-Wallis H test results indicated significant differences between groups (p < 0.05) in all aspects of tacti-cal expertise paradigm examined: strate-gic planning, offensive organization, de-fensive transitions, crisis management, and methodological fidelity. Effect sizes calcu-lated for each aspect proved that the mem-bership of the coaches' group (geographi-cal and cultural school) accounted for sig-nificant percentage of variance in their tac-tical expertise (n(2) = 0.777 - 0.86) The results obtained showed that Scandinavian School of coaching prioritized struc-tural discipline and collective intelligence principles, obtaining the highest ratings in strategic planning (4.43) and method-ological fidelity (4.77). Turkish School demonstrated its advantage in crisis man-agement (4.59); however, Turkish coaches were characterized by the lowest rate in methodological fidelity (2.94). As the re-sult, ability of Turkish coaches in tactical improvisation and intuitive expertise con-flicts with system-oriented approach. De-spite obtaining the best score in defen-sive transitions (4.76), the Baltic School demonstrated its reactivity in regards to offensive organization and strategic plan-ning. To conclude, this study showed that tactical expertise is not only a set of tech-nical knowledge, but also the specific cog-nitive scheme that includes geographic and cultural code elements. It can be concluded that distinctive feature of Scandinavian ra-tionalism and Turkish dynamism provides useful theoretical background for hybrid coach models in contemporary football.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10656
  Comparison of plyometric repeated sprint and plyometric aerobic training on physical performance in youth soccer players

  Selmi, Mohamed Amin; Hammami, Raouf; Ceylan, Halil Ibrahim; Duncan, Michael; Sassi, Radhouane Haj; Morgans, Ryland; Bayrakdaroglu, Serdar; Bragazzi, Nicola Luigi

  High-intensity interval training (HIIT) and repeated-sprint sets (RSS) are established conditioning methods in soccer, yet their integration with plyometric training among highly trained youth soccer players remains underexplored. This study investigated the effects of an 8-week program combining plyometric training with either RSS (PLYO-RSS) or HIIT (PLYO-HIIT) on physical fitness in young soccer players. Twenty-nine male players (14-15 years) were randomly assigned to PLYO-RSS (n = 14) or PLYO-HIIT (n = 15). Both interventions lasted 20 minutes per session and replaced part of regular soccer training. Physical fitness assessments included countermovement jump (CMJ), 15-s repeated vertical jumps (15''RJ), five-jump test (5JT), 10 m and 30 m sprint, maximal aerobic speed (MAS), VO2max, and repeated sprint performance (total sprint time, best sprint, fatigue index). Physiological markers (lactate, rating of perceived exertion, and HRmax) were also monitored. Significant improvements over time were observed in muscle power, sprint speed, aerobic capacity, and repeated-sprint ability (p <= 0.001; eta & sup2;p = 0.339-0.489). However, no main effects or group & times; time interaction effects were observed, indicating no evidence of differential responses between the two training modes. In conclusion, integrating plyometric training with either RSS or HIIT effectively enhances physical fitness in highly trained youth soccer players, offering flexible options for training prescription.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10617
  Short-Term Inspiratory Muscle Training Enhances Functional and Metabolic Health in Older Adults

  Konca, Erkan; Yilmaz, Coskun; Bayrakdaroglu, Serdar; Ceylan, Halil Ibrahim; Arslan, Ayla; Ocak, Hakan; Karakulak, Izzet; Sari, Rifat; Uzun, Recep Nur; Soylu, Hakan Huseyin

  Background: Age-related declines in respiratory muscle strength and ventilatory efficiency can impair functional capacity and metabolic health in older adults. Inspiratory muscle training (IMT) has been proposed as a practical intervention to counteract these changes, yet its systemic effects remain unclear. This study aimed to examine the effects of short-term IMT on functional capacity, diaphragm thickness, and liver tissue characteristics in healthy elderly men. Methods: Thirty community-dwelling men aged 60-80 years were randomly assigned to an IMT or control group. The IMT group performed four weeks of breathing exercises using a POWERbreathe (R) device at 40% of maximal inspiratory pressure, with a weekly 10% increase in pressure. Pre- and post-intervention assessments included the six-minute walk test (6MWT), diaphragm thickness and liver density via computed tomography, and quality of life (QoL; SF-12). Results: Four weeks of inspiratory muscle training significantly improved diaphragm thickness (11.7%), fatty liver density (FLD) (+16.7%), and six-minute walk performance (+5.3%), with large time x group effects favoring the IMT group. While the physical quality of life showed modest, comparable improvements, mental health outcomes demonstrated a moderate, time-dependent improvement without a significant group-by-time interaction. Conclusions: Short-term IMT improved diaphragmatic function and functional capacity in older men and was associated with favorable changes in a liver-related biomarker; however, given that only a single liver-related metric was assessed, these findings should not be interpreted as evidence of overall improvements in liver health.

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• MakaleAçık Erişim2026Scopus SJRQ1/r/gumushane/10594
  Effects of wrestling training on psychological well-being, anxiety, and resilience in adolescent boys

  Özkan, Ridvan; Yilmaz, Coskun; Uzun, Recep Nur; Bayrakdaroglu, Serdar; Akar, Ozge Orhan; Öz, Faik; Çiçekli, Atif; Çiçekli, Aylin; Dal, Suzan; Ursu, Vasile Emil

  Background Wrestling is a physically and mentally demanding combat sport that requires discipline, focus, and emotional control. Although its physiological effects are well documented, its psychological benefits in adolescents remain underexplored. This study aimed to examine whether a short-term, non-competitive wrestling program could enhance psychological well-being, reduce sport anxiety, and strengthen resilience in adolescent boys. Methods Thirty sedentary male adolescents (aged 12-15 years) were randomly assigned to a wrestling training group (n = 15) or a control group (n = 15). The intervention consisted of six weeks of supervised wrestling sessions performed three times per week. Psychological well-being (WHO-5), sport anxiety (SAS-2), and resilience (BPRS) were assessed before and after the intervention using the validated Turkish versions of the scales. Two-way repeated-measures ANOVA was used to analyze group & times; time interactions. Results Participants in the wrestling group demonstrated significant improvements in well-being (p < 0.001) and resilience (p < 0.001), alongside marked reductions in total sport anxiety and its subdimensions (p < 0.001), compared with the control group. All effects were large (eta p & sup2; = 0.52-0.94). Conclusion A structured six-week wrestling program produced meaningful psychological benefits in adolescent boys. Regular participation in non-competitive wrestling may serve as an effective approach to promote well-being, emotional stability, and adaptive coping skills during early adolescence, supporting the preventive and developmental role of combat sports in youth mental health.

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• MakaleAçık Erişim2026Scopus SJRQ2/r/gumushane/10499
  Multi-joint isokinetic strength profiling as a predictor of vertical jump performance in elite freestyle wrestlers A cross-sectional principal component analysis

  Sever, Ozan; Ceylan, Halil Ibrahim; Dhahbi, Wissem; Yilmaz, Hasan Huseyin; Özdemir, Kubra; Yazici, Ahmet Gokhan; Jalalov, Ferhad; Günay, Ahmet Rahmi; Bayrakdaroglu, Serdar; Stefanica, Valentina

  Wrestling requires coordinated lower-limb strength for explosive techniques. While isokinetic testing isolates joint-specific strength and countermovement jumps assess functional power, comprehensive multi-joint assessments with advanced factor analysis remain unexplored in elite wrestlers. Twenty-one national-level male freestyle wrestlers (22.3 +/- 2.8 years; 76.2 +/- 14.7 kg) completed cross-sectional neuromuscular assessments. Isokinetic concentric strength testing at 60 degrees/s evaluated hip, knee, and ankle joint functions bilaterally using an Isomed 2000 dynamometer. Vertical jump power was assessed through countermovement jumps under bilateral and unilateral conditions using the Optojump system. All strength and power variables were normalized to fat-free mass determined via air displacement plethysmography. Statistical analyses included Pearson correlations with Benjamini-Hochberg correction, stepwise multiple regression, and principal component analysis. Bilateral jump performance correlated strongly with knee extension (R = 0.798, P <.001) and hip extension strength (R = 0.664, P =.001), with combined predictors explaining 68.8% of variance (F-2,F-18 = 19.8, P <.001). Principal component analysis identified a primary extensor factor (hip and knee extension, 52.6% variance) and an auxiliary factor (ankle plantar flexion and hip adduction, 19.0% variance). Unilateral jump models demonstrated lower explanatory power (dominant: 39.8%, non-dominant: 25.7%). Multi-joint isokinetic strength assessment, particularly hip and knee extension capacity, provides a robust prediction of vertical jump performance in elite wrestlers. The identified primary extensor strength factor represents a fundamental neuromuscular capacity underlying explosive lower-limb function, supporting targeted strength development strategies for wrestling-specific performance enhancement.

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