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    Diurnal variation in Uchikomi fitness test performance: Influence of warm-up protocols
    (Frontiers Media Sa, 2022) Eken, Oezguer; Yagin, Fatma Hilal; Eken, Ismihan; Gabrys, Tomasz; Knappova, Vera; Bayrakdaroglu, Serdar; Akyildiz, Zeki
    Performance is judged using a variety of methods to ensure uniformity between competitions. Uchikomi Fitness Test (UFT) could accomplished between morning qualifying and evening finals. The purpose of this study is to investigate the impact of different warm-up protocols on UFT at different times of the day in female judokas. Ten volunteer women who had been practising judo on a regular basis for more than 5 years and actively competed in international tournaments took part in this study. Judokas completed UFT, either after no-warm-up (NWU), specific warm-up (SWU), and linear+lateral warm-up (FWU) protocols for two times a day in the morning: 09:00-11:00 and in the evening: 16:00-18:00, on non-consecutive days. In conclusion, there was a significant increase in UFT scores (F = 9.89; p = 0.002), a + b (F = 4.42; p = 0.04) and heart rate (F = 28.99; p < 0.001) in the early evening compared to the morning. Increases in UFT performance were observed in the SWU protocol compared to the NWU and FWU protocols (p < 0.05). However, the interaction between time of day and warm protocol was not significant (p > 0.05). The UFT performance revealed diurnal variation, and the judokas' performances may be favourably affected more in the late hours, particularly following SWU procedures.
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    Effects of low and high intensity interval training exercises on VO2max and components of neuromuscular and vascular system in male volunteers
    (Jmni, 2022) Eken, Oezguer; Kafkas, Muhammed Emin
    Objectives: To evaluate the effects of different intensity exercises on maximal oxygen consumption (VO2max and levels of components, namely brain-derived neurotrophic factor (BDNF), tyrosine kinase receptor B (TrKB), vascular endothelial growth factor (VEGF), peroxisome proliferator activated receptor-gamma coactivator (PGC-1 alpha), and irisin. Methods: Thirty-six male participants were divided into control (CNT), low-intensity (LIIT), and high-intensity interval training (HIIT) groups. LIIT and HIIT groups consisted of 8 exercises (20 s work and rest in each repetition, respectively) conducted for 4 weeks. VO2max and protein component levels were determined pre-and post-training. VO2max capacity was also determined using the Yo Yo Intermittent Recovery Test-1 (Yo Yo IR-1). Statistical analysis was conducted to determine significance of the differences observed. Results: According to the YoYo IR-1, VO2max, serum BDNF, VEGF, PGC1 alpha, irisin, and TrkB data obtained in the study, a statistically significant difference between the groups was observed (p < 0.05). While the interaction effect was found to be statistically significant in the study using PGC1 alpha, VEGF, and TrkB data (p < 0.05), it was not found to be statistically significant using YoYo IR-1, VO2max, serum BDNF, or irisin data (p > 0.05). Conclusion: HIIT and LIIT improved all study parameters, while HIIT showed a greater effect than LIIT.
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    Evaluation of electrocardiographic parameters in amputee football players
    (Frontiers Media Sa, 2023) Kurtoglu, Ahmet; Kurtoglu, Ertugrul; Akguemues, Alkame; Car, Bekir; Eken, Oezguer; Sarbu, Ioan; Ciongradi, Carmen Iulia
    ObjectiveThe present study aimed to compare electrocardiographic (ECG) parameters of amputee football players (AF) with football players without disability (FP) and sedentary individuals without disability (SI). MethodsA total of 32 participants (AF = 9, FP = 11, SI = 12) were included in the study. ECG parameters including P-wave amplitude, P-wave duration, PR interval, QRS duration, RR interval, QT interval, corrected-QT interval (QTc), ST segment duration, Tp-e duration, Tp-e/QT and Tp-e/QTc ratios were assessed in all the study participants by using a 12-lead ECG device. OneWay ANOVA Test was used for statistical analysis. ResultsOf all ECG parameters, P-wave amplitude and QTc were significantly higher in the AF group in comparison to FP and SI groups. QRS duration was found to be lower in the AF group when compared to FP and SI groups. Myocardial repolarization parameters including Tp-e duration, Tp-e/QT and Tp-e/QTc ratios were similar between groups, as were other parameters such as P-wave duration, PR interval, RR interval, QRS duration and QT interval. ConclusionIt was found that some ECG parameters of amputee football players differ from those with non-disabled players and non-disabled sedentary individuals. These different parameters were within normal limits.