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    Determination by priority weight of motoric function in children by age groups
    (Mattioli 1885, 2021) Keles, Ali; Deliceoglu, Gokhan
    This study is to investigate the relationship between certain physical and motoric skills, and results of physical and motoric tests of male and female athletes from sports schools in Ankara province, and priority weights of the applied tests with respect to age groups. Research group at the Ankara sports schools serves as the basketball and volleyball training variable between the ages of aged 6-15 82 boys and girls to 103 total 185 created the voluntary athlete. Research, motorik features children according to age groups include the determination of the the weight of importance. To identify physical and motoric skills of athletes, height, weight, sit and reach test, flamingo test, right hand grip strength test, left hand grip strength test, pro-agility test, 30 meter sprint test, 30-s continuous jump test, vertical jump test, was used.Priority weights of physical and motoric tests are obtained by using computational model.Mean and standard deviation values of height, weight, sit and reach test, flamingo test, grip tests, agility test, sprint test, 30-s continuous jump test and vertical jump are computed by using IBM SPSS 20 for windows. Priority weights of the physical and motoric tests are computed by using Microsoft Office Excel 2007. In conclusion, for children in the age group over 10 who participated to research, priority weights of agility, speed, flexibility, and take-off parameters observed to stagnate and strength competence is observed to decreasing continuously.Therefore, a conclusion of, performance of the motoric skills are preserved after the age 10 in the development cycle of the children, is made.
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    The effect of acute L-arginine supplementation on repeated sprint ability performance
    (Mattioli 1885, 2019) Birol, Abdulkadir; Kilinc, Fatma Nisanci; Deliceoglu, Gokhan; Keskin, Esra Dilek
    Aim: The aim of this study is to determine the effect of acute L-arginine supplementation on repeated sprint ability performance in football players aged between 18-21 years. Methods: The study was conducted on 20 volunteer healthy male football players playing in the under-21 football team in the 1st league of Turkey. General characteristics of football players were questioned and their anthropometric measurements were taken. The study was performed as a double-blind placebo-controlled design. Players were randomly given 0.15 g/kg/day relative dosage L-arginine or placebo with 500 ml of water 1 hour before repeated sprint ability test (RSAT). The 12x20m RSAT protocol was applied in the synthetic turf football field with a recovery interval of 30 seconds between each sprint and the photocell system was used to determine running time. Results: The mean age of the arginine group is 18.30 +/- 0.48 years and the mean age of placebo group is 18.33 +/- 0.50 years. 85% of the players never used L-arginine, and any dietary supplements. Only the ninth sprint time of the 12 sprints performed after the supplementation was 5.24% faster than the placebo group in the arginine group (p<0.05). However, no difference was detected between the groups in terms of sprint decrement score, total sprint time, blood pressure and heart rate (HR) (p>0.05). Conclusion: In this study, the supplementation of acute L-arginine administered to players had no significant effect on HR, blood pressure and RSAT total sprint time and sprint decrement score.
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    The examination of some anthropometric and motoric characteristics of students aged eight years according to their maturation level
    (GDANSK UNIV PHYSICAL EDUCATION & SPORT, 2020) Ari, Erdal; Deliceoglu, Gokhan
    Background: Maturation is an important factor for exercise. The maturation effect on some anthropometric and motoric characteristics of students aged eight years was examined in this study. Material and methods: 535 primary education students voluntarily participated in this study. Anthropometric measurements (weight, height, sitting height, stroke length, stroke rate, leg length and body mass index), flexibility, handgrip strength, vertical jump (squat and countermovement jump), tapping (skipping) test paramaters (step frequency, flight times and contact times to ground of right and left foot, step/speed ratio), postural sway (anterior-posterior, medial lateral and total postural sway), visual reaction and reaction time, 20 meters sprint time, agility values were measured. The test parameters were compared in terms of gender and maturation level (early, normal and delayed maturation) by parametric (independent samples T-test, one way ANOVA) and non-parametric (Mann Whitney-U and Kruskal Wallis-H) tests. Results: A significant difference was indicated between boy and girl students in most of the test parameters (p < 0.05). The analysis results indicated that students at early maturation level had better test values (p < 0.05). Conclusions: The maturation factor positively affected some anthropometric and motoric parameters of students aged eight years.
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    Is there any predictive equation to determine resting metabolic rate in ultra-endurance athletes?
    (Mattioli 1885, 2019) Devrim-Lanpir, Asli; Kocahan, Tugba; Deliceoglu, Gokhan; Tortu, Erkan; Bilgic, Pelin
    Background/aims: Only a few studies determined some equations to predict resting metabolic rate (RMR) in endurance athletes, however the validity in ultra-endurance athletes, such as triathletes and ultra-marathoners, had not been examined previously. The aim of this study was to assess the accuracy of commonly used RMR predictive equations (Harris-Benedict, Mifflin-St. Jeor, Cunningham, WHO/FAO/UNU (calculated by using body mass and height and body mass alone), Wang, and Sabounchi (Structure 4, 5, and 11) equations) comparing with measured RMR in ultra-endurance athletes. Methods: Male (n=15) and female (n=15) ultra-endurance athletes age 23 to 55 years from Ankyra Sports Club were included. The Bland-Altman plot was performed to determine mean bias and limits of agreement between measured and predicted RMRs. Linear regression analysis was used to determine the accuracy of each predictive equation by computing the standard en-or of estimate and root-mean-squared prediction error (RMSPE). Results: Mifflin-St. Jeor equation was found to be the best predictive equation with lowest RMSPE (275.85 kcal/day for men and 388.34 kcal/day for women) and mean difference (3.04 +/- 285.51 kcal/day for men and 185.57 +/- 353.10 for women) in ultra-endurance athletes. The Cunningham equation could be used in estimating RMR in male athletes (RMSPE, 310.77 kcal/day, the bias between measured vs. predicted RMR, 147.68 +/- 283.04 kcal/day). Conclusions: The Mifflin- St. Jeor and Cunningham equations for men and the Mifflin-St. Jeor equation in women could be used with caution in the absence of indirect calorimetry in ultra-endurance athletes. All other predictions significantly underestimated RMR for both sexes.
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    Screen Time Differences among Turkish University Students as an Indicator of Sedentary Lifestyle and Inactivity
    (Fac Teacher Education, 2017) Caglar, Emine; Bilgili, Naile; Karaca, Ayda; Deliceoglu, Gokhan
    The aim of the present study was to examine the screen time differences as an indicator of sedentary lifestyle in terms of some socio-demographic variables among university students. A total of 2209 university student (M-age = 20.80, SD = 1.61 years) participated in this study. The demographic information and screen time data were collected by using a survey form. The screen time refers to the combined time spent on watching TV/video, watching/playing/working on a computer, and playing video games. Two x three factorial ANOVA revealed significant gender and socioeconomic status differences in the screen time. The male students and those with a high socio-economic status had higher screen time. In addition, one-way ANOVA showed significant screen time differences in terms of parental education level and place of residence (p < .001). The students living in dormitories and those whose parents had lower education level had lower screen time. Also, the students who had an opportunity to access technological devices in their place of residence and in their bedrooms had higher screen time than the students who did not have these facilities (p<.001). The screen time as a sedentary behavior among university students is quite high and these findings can be taken into account as a warning indicating increases in the sedentary lifestyle of these young adults.
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    Skeletal muscle fatigue does not affect shooting accuracy of handball players
    (Ios Press, 2019) Akyuz, Beyza; Avsar, Pinar Arpinar; Bilge, Murat; Deliceoglu, Gokhan; Korkusuz, Feza
    BACKGROUND: Shooting accuracy and ball speed are important factors relating to scoring in handball that could be affected by skeletal muscle fatigue. OBJECTIVE: To explore the effects of muscle fatigue on male handball players' shooting accuracy and ball speed. METHODS: Sixteen elite handball players (M-age = 17.1 +/- 1.7 years) participated in the laboratory and the field-testing sessions. Running speeds equal to 75% of participants' maximal oxygen uptake (VO2max) values from laboratory tests were used as the initial velocity for the 30-15 intermittent fitness test (30-15(IFT)) in the fatigue protocol. Participants shot to the target at random visual signals placed behind the target before and after fatigue. In order to measure wrist acceleration and ball speed, an accelerometer and a radar gun are used respectively and numbers of accurate and inaccurate shots also recorded. RESULTS: There were no significant differences between pre-fatigue and post-fatigue protocols in terms of accurate and inaccurate shots, and ball speed. Only wrist acceleration in the Y axis (M-pre(-fatigue) = 33.12, SD = 1.17msec; M-post - fatigue = 34.50, SD = 1.21msec) was affected by the fatigue protocol in inaccurate shots (p = 0.042). CONCLUSIONS: Muscular fatigue does not affect shooting accuracy and ball speed in male handball players.
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    Total Dietary Antioxidant Intake Including Polyphenol Content: Is It Capable to Fight against Increased Oxidants within the Body of Ultra-Endurance Athletes?
    (MDPI, 2020) Devrim-Lanpir, Asli; Bilgic, Pelin; Kocahan, Tugba; Deliceoglu, Gokhan; Rosemann, Thomas; Knechtle, Beat
    The role of dietary antioxidants on exhaustive exercise-induced oxidative stress has been well investigated. However, the contribution of total dietary antioxidant capacity on exogenous antioxidant defense and exercise performance has commonly been disregarded. The aims of the present investigation were to examine (i) the effects of dietary total antioxidant intake on body antioxidant mechanisms, and (ii) an exhaustive exercise-induced oxidative damage in ultra-endurance athletes. The study included 24 ultra-marathon runners and long-distance triathletes (12 male and 12 female) who underwent an acute exhaustive exercise test (a cycle ergometer (45 min at 65% VO(2)max) immediately followed by a treadmill test (75% VO(2)max to exhaustion). Oxidative stress-related biomarkers (8-isoprostaglandin F2alpha (8-iso PGF2a), total oxidant status (TOS, total antioxidant status (TAS)) in plasma were collected before and after exercise. Oxidative stress index was calculated to assess the aspect of redox balance. Blood lactate concentrations and heart rate were measured at the 3rd and 6th min after exercise. Dietary antioxidant intake was calculated using the ferric reducing ability of plasma (FRAP) assay. Dietary total antioxidant intake of the subjects was negatively correlated with pre-exercise TOS concentrations (rs = -0.641 in male, and rs = -0.741 in females) and post- vs. pre- ( increment ) 8-iso PGF2a levels (rs = -0.702 in male;p= 0.016, and rs = -0.682 in females;p= 0.024), and positively correlated with increment TAS concentrations (rs = 0.893 in males;p= 0.001, and rs = 0.769 in females;p= 0.002) and post- exercise lactate concentrations (rs = 0.795 for males;p= 0.006, and rs = 0.642 for females;p= 0.024). A positive meaningful (p= 0.013) interaction was observed between time at exhaustion and dietary antioxidant intake (rs = 0.692) in males, but not in females. In conclusion, the determination of total dietary antioxidant intake in ultra-endurance athletes may be crucial for gaining a better perspective on body antioxidant defense against exhaustive exercise-induced oxidative stress. However, the effects of dietary antioxidant on exercise performance and recovery rate needs further investigation.