Sürdürülebilir Kalkınma Amaçları

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Araştırmacılar(4)

• Akcan, İbrahim Orkun
• Kaya, Fatih
• Tetik Dündar, Sibel
• Yilmaz, Duygu Sevinc

• ArticleAçık Erişim2026/r/ebyu/19296
  Eğitsel oyunların adölesanlarda fiziksel performans üzerindeki rolü: yerle temas süresi, havada kalış süresi ve teknik yetenek

  Aydemir, Burakhan; Yılmaz, Duygu Sevinç

  Çalışmanın amacı, eğitsel oyunların adolesan kadın taekwondocularda yerle temas süresi, havada kalış süresi ve teknik yetenek üzerine etkisini incelemektir. Çalışmada deney ve kontrol grupları için nicel araştırma yöntemlerinden ön-son test deneysel tasarım kullanıldı. Bu model ile dikey sıçrama, havada kalış süresi, yerle temas süresi ve taekwondoya özgü teknik değerleri ölçüldü. Çalışmada deney ve kontrol grupları için nicel araştırma yöntemlerinden ön-son test deneysel tasarım kullanıldı. Çalışmaya gönüllü olarak adolesan dönemde 50 kadın taekwondo sporcusu katıldı (n=50). Random (yansız) yöntemle deney (n=25) ve kontrol (n=25) grupları oluşturuldu. Çalışmada örneklem büyüklüğünün yeterliliğini belirlemek amacıyla G*Power (Sürüm 3.1.9.6, (Germany) analizi yapıldı. Belirlenen parametreler doğrultusunda hesaplanan etki büyüklüğü analizi Cohen’in formülüne göre yapıldı (p = 0.6; α = 0.05; 1-β = 0.8). Elde edilen sonuca göre 42 katılımcı çalışma için yeterli olarak bulundu. DeepSport, standart kameralardan yapay zekâ destekli görüntü işleme kullanıldı. Bu model ile katılımcıların havada kalış süresi, yerle temas süresi ve taekwondoya özgü teknik değerleri ölçüldü. Katılımcıların tekme gücünü tespit etmek için, Daedo Elektronik Sistem kullanıldı Katılımcılardan 3 ölçüm alındı ve en iyi skor kaydedildi. Tekme frekansını tespit etmek için daha önce geçerlik ve güvenirliği yapılmış Taekwondo tekme frekans performans testi kullanıldı. Sonuçlar, eğitsel oyun temelli programın dikey sıçrama, havada kalış süresi, yerle temas süresi, tekme frekansı ve tekme vuruşlarında anlamlı düzeyde gelişmeler gösterdi (p<0.05).

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• ArticleAçık Erişim2026/r/ebyu/19231
  Kafeinin ağızda çalkalanmasının aralıklı koşu performansı üzerine etkisi: gün zamanı

  Akcan, İbrahim Orkun; Karayigit, Raci; Kayabaş, Oğulhan

  Kafeinin ağızda çalkalanmasının (KAÇ) aralıklı koşu performansı iyileştirdiğine yönelik çalışmalar literatürde yer almaktadır. Bununla birlikte, bu iyileştirme etkisinin günün farklı zamanlarında nasıl bir etki göstereceği tam olarak bilinmemektedir. Bu araştırmanın amacı, benzer sirkadiyen ritme sahip sporcularda farklı gün zamanı dilimlerinde KAÇ uygulamasının aralıklı koşu performansına etkisini incelemektir. Araştırmaya 14 sağlıklı ve kronotipleri ara tip olan amatör sporcu katılmıştır. Katılımcılar 4 farklı test protokolüne randomize bir şekilde dağıtılmış, çift kör ve çapraz döngülü bir çalışma dizaynında, sabah (10.00) ve akşam (18.00) olmak üzere 25 ml plasebo ve kafein (300 mg) solüsyonlarını 8 kez ve 5’er saniye çalkalayarak aralıklı koşu testini (Yo-Yo IRT1) tamamlamışlardır. Her bir katılımcı, sabah plasebo ve kafein çalkalama, akşam plasebo ve kafein çalkalama testlerini gerçekleştirmiştir. Testlerin sonunda katılımcıların zirve kalp atım hızları (KAH) ve algılanan zorluk dereceleri (RPE) ölçülmüştür. Koşu testlerinin sonucunda, KAÇ uygulamasının plaseboya kıyasla koşu performansı süresini artırdığı (%10) (p0.05). KAH ve RPE ölçümlerinde testler arasında anlamlı bir farklılık olmadığı da tespit edilmiştir (p>0.05). Sonuç olarak, KAÇ uygulaması plaseboya kıyasla koşu performansını artırırken, iki farklı gün zamanı arasında istatistiksel olarak anlamlı bir farklılık yaratmamaktadır. Özellikle ara tip kronotipe sahip olan amatör sporcularda, KAÇ uygulamasının faydasını farklı gün zamanlarında görebilmek mümkün olabilmektedir.

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• ArticleAçık Erişim2026/r/ebyu/19021
  The Impact of Joint Position Sense and Hand–Eye Coordination on Defensive Performance: A Study of Elite Adolescent Taekwondo Athletes

  Özkara, Abdullah Bora; Senocak, Emre; Aydemir, Burakhan; Yılmaz, Duygu Sevinç; Kırkbir, Fatih

  In this study examining the effects of joint position sense, reaction time, and hand–eye coordination on upper-extremity blocking performance in adolescent taekwondo athletes, 11 licensed athletes from the Trabzon Metropolitan Municipality Sports Club volunteered to participate. First, measurements of hand–eye coordination, joint position sense, and reaction time were obtained. Then, a competition simulation was conducted in which participants defended against a sequence of 20 attacks; the number of successful blocks was recorded on video. The video recordings were reviewed and scored by coaches with at least 10 years of experience. According to the Pearson correlation analyses, there was a strong positive association between the number of successful upper-extremity blocks and reaction time (r = 0.64, p = 0.03), and a strong negative association between joint position sense and block count (r = −0.61, p = 0.04). No relationship was found between hand–eye coordination and block count. Multiple regression results showed that joint position sense and reaction time together explained 45% of the variance in block performance, although neither variable alone was a significant independent predictor. These findings indicate that taekwondo blocking success is supported by a holistic set of factors. To improve defensive performance, training programs should be designed using sport-specific assessment methods, and it is recommended to incorporate light-based reaction drills to enhance reaction speed.

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• ArticleAçık Erişim2025/r/ebyu/19172
  Effects of Anxiety and Intolerance to Uncertainty on Life Satisfaction Among Active Athletes During Covid-19 Period

  Yılmaz, Duygu Sevinç; Seçer, Emrah

  This study aims to examine the impact of anxiety and intolerance of uncertainty on life satisfaction among individuals who continued engaging in active sports during the COVID-19 period. This study, which utilized the correlational survey model from quantitative research methods, included 269 individuals (91 women and 178 men) who continued active sports at a private gym. Data were collected using a “Personal Information Form,” “State Anxiety Scale”, “Intolerance of Uncertainty Scale,” and “Life Satisfaction Scale.” For data analysis, after normality tests, parametric tests including the independent samples t-test, Pearson correlation analysis, and multiple linear regression analysis were conducted. According to the study, there were no significant differences in state anxiety, intolerance of uncertainty, and life satisfaction based on gender, sports branch, or information reliability. However, it was found that individuals lacking sufficient information experienced higher levels of anxiety. The study identified a positive relationship between state anxiety and intolerance of uncertainty, whereas negative significant relationships were observed between state anxiety and life satisfaction, and between intolerance of uncertainty and life satisfaction. The findings indicate that state anxiety and intolerance of uncertainty are significant predictors of life satisfaction. It was determined that state anxiety and intolerance of uncertainty significantly predict life satisfaction and explain a substantial portion, approximately 20.5%, of the variance in life satisfaction.

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• ArticleAçık Erişim2023/r/ebyu/19898
  Examination of the Relationship Between Irrational Performance Beliefs and Levels of Anxiety of Elite Athletes in Sports

  Ölmez, Cengiz; Şar, Halit; Akcan, İbrahim Orkun; Yılmaz, Pınar

  The aim of this study is to examine the relationship between irrational performance beliefs and anxiety levels in elite athletes. The research was conducted with the voluntary participation of 285 male and female elite athletes between the ages of 15 and 55, During the research process, athletes' irrational performance beliefs and anxiety levels in sports were investigated. For this purpose, the Irrational Performance Beliefs inventory-2 and the Sport Anxiety Scale-2 were used. Athletes' anxiety levels and irrational performance beliefs were examined considering gender and sport type variables. One-way ANOVA test was used for comparative analysis, and Pearson Correlation analysis was employed for relational examinations. The findings revealed that female athletes were more anxious. Furthermore, in the examination conducted based on sports disciplines, it was found that the differences between athletes' anxiety levels and irrational performance beliefs varied depending on the sport type. in the overall examination, significant relationships were found between athletes' anxiety levels and irrational performance beliefs. in conclusion, athletes' anxiety levels affect their irrational performance beliefs, and this relationship differs among genders and sports disciplines.

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• ArticleAçık Erişim2022/r/ebyu/18712
  Effect Of Combined Training On Anaerobic Power And Motor Skills Of Korfball And Basketball Players

  Erzeybek, Mustafa Said; Yüksel, Oguzhan; Kaya, Fatih; Önen, Mert Eray

  In this study, the effects of eight-week combined training program on the development of anaerobic power and some isometric forces of korfball and basketball players are examined. 29 male (10 basketball players, 9 korfball players and 10 control group) university students, whose age range is 19-24 years, participated in the study. While basketball and korfball players were included in the training program, the participants in the control group continued their routine daily activities. Mean power (watts), peak power (watts), relative power (kg / watts), vertical jump (cm), right hand and left hand paw force (kg) and leg force (kg) were measured before and after the training program. Eight-week training program (3 days a week) consisted of resistance exercises (60-IRM), plyometric exercises (30 cm, 40 cm and 50 cm safes), common and intensive intervals (60-80% HR max), coordination and technical-tactical exercises. Statistically significant increase are determined in the peak power, relative power, vertical jump and leg force values of the basketball group and vertical jump, right hand, left hand and leg force values of the korfball group (p<0.05). In the light of the data obtained, it is seen that the increase in the performance values of basketball players is higher than the korfball players. Anaerobic power and vertical jump in basketball are more dominant than the korfball branch and the game progress is faster than the korfball. These reflect the effects of the training. As a result, it was observed that the combined training program used in this study contributes to improving the performance of basketball players, while different training models should be used for korfball players.

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• ArticleAçık Erişim2022/r/ebyu/20112
  Taekwondocularda bosu ball denge egzersizleri ve pnf germe çalışmasının dollyo chagi tekniğine etkileri

  Marangoz, Irfan; Var, Sevde Mavi; Yılmaz, Duygu Sevinç

  Bu araştırmada sporculara 8 hafta boyunca bosu ball üzerinde denge çalışması ve PNF germe çalışması yaptırılarak dollyo chagi tekniğinin gelişimi üzerinde etkileri incelenmiştir. Çalışmaya 14 kadın, 26 erkek olmak üzere toplam 40 elit altı taekwondocu gönüllü olarak katılmıştır. 40 sporcu rasgele kontrol ve deney grubu olmak üzere iki gruba ayrılmış ve deney grubuna 8 hafta PNF germe çalışma programı ile bosu ball ile denge çalışma programı uygulatılmıştır. Ön test, ara test ve son test alınarak 3 ayrı zamanda sporcuların esneklik, denge ve dollyo chagi tekniğinin 1. (kendi kafa bölgesi seviyesi), 2. (kendi seviyesinin 10 cm yukarısı) ve 3. (kendi seviyesinin 20 cm yukarısı) seviyelerine yapılan vuruşlar ölçülmüştür. Bu çalışmadan elde edilen verilerin analizi için SPSS 22.0 programı kullanılmıştır. Araştırmadan elde edilen bulgular incelendiğinde erkeklerde ara test kendi seviyesinde (p&lt;0,05), ara test 10 cm yukarı seviye (p&lt;0,01) ve ara test 20 cm yukarı seviye (p&lt;0,001) istatistiksel olarak anlamlı bulgular elde edilmiştir. Kadınlarda ise ön test kendi seviyesinde (p&lt;0,05), ön test 10 cm yukarı seviyede (p&lt;0,001) düzeyinde anlamlı bulgulara rastlanmıştır. Ayrıca kadınlarda da erkeklerde de son test kendi seviyesi, 10 cm yukarı seviye ve 20 cm yukarı seviye değişkenlerinde dollyo chagi tekniğinin 3 seviyesinde de istatistiksel anlamlı sonuçlara rastlanmıştır. Elde edilen bu bulgular değerlendirildiğinde kadınlarda da erkeklerde de 8 haftalık bosu ball denge egzersizleri ve PNF germe çalışmasının dollyo chagi tekniği üzerinde iyileştirici etkileri olduğu söylenebilmektedir.

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• ArticleYalnız künye2021/r/ebyu/18489
  REPETITIVE SPRINT OR CALISTHENICS TRAINING: WHICH IS MORE SUCCESSFUL FOR ATHLETIC PERFORMANCE?

  Ölmez, Cengiz; Akcan, Ibrahim Orkun

  This study aims to compare the effects of repetitive sprint and calisthenics training methods on athletic performance improvement. The study was carried out with the voluntary participation of 20 international level kickboxers. Athletes were randomly assigned into two groups as Repetitive Sprint Training Group (RSTG) (n=10; age: 20, 20 +/- 1,32 years) and Calisthenics Training Group (CTG) (n=10; age: 21,20 +/- 1,23 years). Athletes participated in the training of their groups for six weeks, three times a week, every other day. The effects of training methods on the performance improvement of athletes were examined by measurements and tests performed at the pre-test (T1), interim-test (T2), and post-test (T3) stages. Athletes' height, body composition (body weight, body mass index, body fat mass), aerobic endurance (VO2max), peak anaerobic power, and isometric leg (knee, flexion-extension) strength values (60 degrees/sec- 90 degrees/sec) has been examined. At the end of the study, the data were analyzed at a 95% significance level. The results of the study revealed that the repetitive sprint and calisthenics training methods were effective on body composition, aerobic endurance, anaerobic power, and isokinetic strength parameters (p1<0.05), but the effect level was similar in both training methods (p2>0.05). Repetitive sprint and calisthenics training methods are both effective in regulating the body composition of athletes and accelerating aerobic endurance, power, and strength progress, but when designed at similar training intensity, both methods have similar effects.

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• Review ArticleYalnız künye2021/r/ebyu/20740
  The Effect of Core Exercises on Sporsal Performance: Taekwondo Example Mini Compilation

  Yılmaz, Duygu Sevinç

  Most competitive athletes try a variety of training methods for athletic performance. Insufficiently exercised core muscle groups can adversely affect performance. In every sport branch, basic motoric features (strength, balance, flexibility, etc.), technical-tactical development must be studied according to the relevant branch. In the Taekwondo branch, in addition to the basic motor properties, good balance, flexibility, explosive leg strength and fast recovery are required. Core muscles play a major role in the development of the properties required for this branch. Strengthening the core muscles and stability exercises have become indispensable for not only taekwondo athletes but also athletes of all levels and branches. The core muscles act as bridges between the upper and lower limbs. Strong and stable core muscles kinetically help generate and transfer power. The purpose of this review is to examine core training methods that can be useful for taekwondo athletes. It is thought that giving intensity to the training of core muscle groups in Taekwondo will greatly help improve spine movements and athlete performance. In addition, the applied core training can help improve recovery, flexibility, balance and explosive power during the competition. According to the current literature, the sample group and performance status should be determined well in order for core studies to be useful. In parallel with this, we can say that the adjustment of the number of set-repetitions, the auxiliary materials used, and the variety of movement according to the characteristics of the sample group may be beneficial for performance improvement.

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• ArticleYalnız künye2020/r/ebyu/21999
  The Effect of High Intensity Interval Training in Different Forms Applied to Combat Athletes on Body Composition and Muscular Strength

  Akgül, Mustafa Şakir; Aydos, Latif; Akcan, İbrahim Orkun

  The aim of this study was to investigate effects of two different high intensity interval program for 3 weeks on bodycomposition and strength of combat sport athletes. Twenty-nine combat sport athletes (karate, judo, taekwondo, wrestling) (age21.41±1.50 years) voluntarily participated in this study. Participants were randomly assigned to two groups; Tabata protocoland running based high intensity interval protocol. Both methods were applied to participants 3 days per week for 3 weeks.Body composition, leg strength, back strength and hand grip strength of the participants were measured before and after theapplication. Paired Sample T Test was used to determine intragroup changes while Independent Sample t-test as used todetermine intergroup changes. There was no significant difference between groups during the first measurement (p>0.05). Nosignificant change was found in the variables between two measurements. When groups were compared, there was differencein back strength in favour of Tabata group.

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