Browsing by Author "Aslan, Cem Sinan"

Now showing 1 - 4 of 4

FUTBOLDA MERKEZ VE KENAR OYUNCULARININ FİZİKSEL VE MOTORİK ÖZELLİKLERİNİN KARŞILAŞTIRILMASI
(2019) Karakulak, İzzet; Eyuboğlu, Ender; Aslan, Cem Sinan
Bu çalışmada amaç; “merkez ve kenar oyuncusu” olarak ayrılmış bir grup amatör futbolcunun seçilmiş fiziksel ve motorik özelliklerini karşılaştırmaktır. Çalışmaya yaşları 18 ila 31 arasında değişen 55 erkek amatör futbolcu katılmıştır. Katılımcılar “merkez veya kenar oyuncusu” olarak genel bir mevkisel ayrıma tabii tutularak iki gruba ayrılmışlardır. Katılımcıların vücut kompozisyonları, alt ekstremite kuvvetleri, anaerobik güçleri, aerobik dayanıklılıkları, sürat ve esneklik değerleri saha testleri ile belirlenmiştir. Elde edilen veriler normal dağıldığından, grupların karşılaştırılmasında SPSS (Ver.14) programında yer alan Independent Sample t Test kullanılmış, yanılma düzeyi 0,05 olarak kabul edilmiştir. Gruplar arasında yaş açısından fark yokken, boy, vücut ağırlığı, vücut kitle indeksi ve vücut yağ oranında anlamlı fark çıkmıştır. Motorik özelliklerden bacak kuvveti, esneklik ve 10 m sprint değerleri arasında fark oluşmazken dikey sıçrama, anaerobik güç, 30 m sprint ve VO2maks değerlerinde anlamlı fark oluşmuştur. Karşılaştırma sonuçları değerlendirildiğinde; merkez oyuncular boy uzunluğu, vücut ağırlığı, vücut kitle indeksi ve vücut yağ oranında kenar oyuncularından daha yüksek değerlere sahiptir. Motorik özelliklerde ise; kenar oyuncuları dikey sıçrama, 30 m sprint ve VO2maks bakımından daha iyi değerlere sahipken, merkez oyuncularının anaerobik güçleri daha fazladır.
Citation - WoS: 7
Citation - Scopus: 10
Is There Any Effect of Non-Suitable Pull Technique in Back & Leg Dynamometers on the Leg Strength Test Results
(Carbone Editore, 2019) Aslan, Cem Sinan; Karakulak, Izzet; Sahin, Fatma Nese; Eyuboglu, Ender
Introduction: Dynamometers are valid and reliable test instruments that have been used for many years to measure strength. However, there are excessive differences in leg strength scores in different studies with similar groups. This situation suggests a non-conformity to testing procedures occurred during the practice of the tests. The purpose of this study was to determine the effect of non-suitable pulling technique on the leg strength test results. Materials and methods: A total of 127 healthy subjects (24 female athletes and 41 male athletes, 22 sedentary females and 40 sedentary males) were included in the study. A back & leg Dynamometer was used to determine the leg strength of the participants. The participants pulled up the dynamometer's grab handle with and without contact with their upper leg. Results: The results showed that there was a significant difference (p=0.000) between contacted and non-contact pulling trials of all participants. The percentage difference of leg strength between contacted and non-contact pull was 51.69% (43.25 kg) for female athletes, 54.78 (73.46 kg) for male athletes, 5631% (37.52 kg) for sedentary females, and 50.69% (65.55 kg) for sedentary males. Conclusion: There were significant differences between contacted and non-contact pull trials. It was determined that during the pulling phase if the dynamometer's grab-handle contacted the upper leg of a subject, the strength measurement's score increased considerably. In this case, it can be said that non-suitable pulling technique in the "back & leg dynamometers" affects the leg strength test scores.
Exercise, Addiction and Motivation: the Development of a Motivation Scale in Extreme Sports as a Sport of Challenge with Nature
(Frontiers Media S.A., 2025) Karakulak, Izzet; Yavas, Ozge; Bora, Mehmet Veysi; Eyuboglu, Ender; Aslan, Cem Sinan; Aydemir, Ahmet; Sahin, Fatma Nese
In the extant literature, the concepts of motivation and addiction have been employed to elucidate how a considerable number of unpleasant experiences for extreme sports participants can eventually become rewarding. The objective of this study was to develop a scale to measure the behavioral addiction levels of extreme sports athletes. A plethora of addiction and motivation scales (MS) exists; however, none of them are measurement tools that can assess emotional responses and simultaneously address motivation and addiction. Moreover, they are not specific to extreme sports participants. The present study comprised 1,073 participants engaged in extreme sports and incorporated psychometric analyses encompassing a literature review, expert review, exploratory and confirmatory factor analysis. The MS factor structure was determined using the Principal Axis Factoring (PAF) method. The analysis yielded a three-factor structure comprising 16 items, accounting for 63.00% of the total variance. In order to validate the structure, first- and second-order factor analysis was performed. The fit indices obtained at both levels were consistent with the acceptable limits specified in the literature. In the final results, 16 items related to three factors, namely "hedonic deprivation," "tolerance," and "hedonic opposition," were validated. Furthermore, the AVE, CR, and root AVE values were calculated. The analysis results indicated that each sub-dimension in the measurement model exhibited a distinct structure and fulfilled the established validity criteria. Cronbach's Alpha and Split-Half coefficients were calculated to ascertain the reliability of the measurement. The floor and ceiling effects of the MS were also examined. Finally, ROC analysis was employed to evaluate the measurement tool. The findings of this research indicate that the MS, which has been developed and comprises 16 items and a three-factor structure, is a valid and reliable instrument capable of simultaneously addressing motivation and addiction in the context of extreme sports. The scale is of significance as it is the inaugural quantitative measurement tool with the capacity to assess addiction. In conclusion, the MS provides a novel, theory-based contribution to the literature by integrating motivation and behavioral addiction within a single, psychometrically validated framework specific to extreme sports.
Citation - WoS: 12
Citation - Scopus: 10
Impact of Detraining Process Experienced During the Covid-19 Pandemic on the Selected Physical and Motor Features of Football Players
(Mattioli 1885, 2020) Korkmaz, Sezgin; Aslan, Cem Sinan; Eyuboglu, Ender; Celebi, Murat; Kir, Ridvan; Karakulak, Izzet; Geri, Serdar
Study Objectives: The purpose of this study was to examine the changes in the selected physical and physiological properties of football players in the long-term detraining stage during the pandemic period. Methods: In this study, 14 semi-professional football players (mean age: 22.21 +/- 3.29 years old and mean height: 177.86 +/- 5.35 cm) took part voluntarily. The participants had remained in detraining in the home environment for 89 days until the final measurements, following the decision of cessation of the leagues made by the Turkish Football Federation, except soft and irregular exercises they did with theirbody weight. The participants' body composition characteristics, anaerobic performance, flexibility, and speed performance were measured. The descriptive statistics for numeric variables were expressed as mean standard deviation. Since parametric test assumptions were provided as a result of examining the data acquired from the experimental subjects via the Shapiro-Wilk test, the repetitive measurements were evaluated using the "Paired-Sample t-test". In addition, the mathematical differences between the two measurements were indicated with percentage. The results were evaluated at the confidence interval of 95% and the value p <0.05 was accepted to be significant. Results: Comparing the pretest-posttest results of the participants; the difference between the two measurements was statistically insignificant in terms of body weight, BMI, 30 m speed, and fatigue index properties, while the difference in terms of body muscle mass, fat mass, fat ratio, waist-hip ratio, peak power, average power, minimum power and flexibility properties was significant. Conclusion: A long-term detraining process significantly damages the physical and motor performance of football players.