Browsing by Author "Gelen E."

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    Acute effects of different warm-up methods on free kick performance in amputee soccer players; [Effetti acuti dei diversi metodi di riscaldamento sul rendimento dei giocatori amputati nel battere i calci di punizione]
    (Edizioni Minerva Medica, 2018) Yildiz S.; Kayihan G.; Gelen E.; Çilli M.; Özkan A.
    BACKGROUND: There are studies documenting the detrimental effects of static stretching and useful effects of dynamic exercises. However, there is no study which has researched the acute effects of different warm-up exercises on free kick performances in amputee soccer. The purpose of this study was to compare the acute effects of static stretching and dynamic warm-up exercise on free kick performance in amputee soccer players. METHODS: Twelve amputee soccer players playing for the national team (mean age 28±7 years) were investigated in our study. This study was designed to determine the acute effects of 3 different warm-up (WU) methods static stretching (SS), dynamic exercises (DYN) and control (NS) on anaerobic performance (free kick speed performance) RESULTS: Although significant differences (P<0.001) were found for DYN and NS when the free kick speed levels of the soccer players were compared pre and post-test; no obvious difference (P>0.05) was found for SS. The data shows that there is a significant increase in free kick speed for DYN and NS according to pre and post-tests results. CONCLUSIONS: The results of this study suggest that it may be desirable for amputee soccer players to perform dynamic exercises before performing activities that require a high power output. © 2018 Edizioni Minerva Medica. All Rights Reserved.
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    The relationship between start speed, acceleration and speed performances in soccer
    (Horizon Research Publishing, 2018) Yıldız S.; Ateş O.; Gelen E.; Çırak E.; Bakicı D.; Sert V.; Kayıhan G.
    Start speed, acceleration, and speed performance are critical factors affecting directly football player’s performance. The aim of our study was to examine the relationship among these three abilities. 79 football players voluntarily participated in the study (height: 177,96 ± 5,4cm; weight 73,72 ± 7,85kg; training age: 10,59 ± 2,94 years; age: 21,90 ± 2,66 years). Participant’s tests have been taken on non-consecutive days in RT (visual reaction test, Lafayette, Moart Reaction and Movement), Speed (Total 15m; Fusion Sport, Smart Speed), Start speed (0-5m; Fusion Sport, Smart Speed), and acceleration (5-15 m; Fusion Sport, Smart Speed). The first 5m is start speed, 5-15m is acceleration phase and total 15m is speed. Significant correlation has been found between star speed and speed (p<0,01); training age and start speed (p<0,05); height and last 5m performance. Otherwise, the adverse correlation has been found between the second 5m and last 5m performances (p<0,01). There is no significant correlation between reaction time and 15m speed performance (p>0,05). There is significant correlation between acceleration and 15m speed (p<0,05), and between second 5m (p<0,01) and third 5m performances. The football players who have good rates of start speed times have good speed performance due to their physical capabilities. The rate of ground reaction forces is the most important factor that affects acceleration. Hence it’s recommended that activities including Olympic weightlifting be performed to increase the rate of ground reaction forces. © 2018 by authors. All rights reserved.
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    Effects of 8-week functional vs. traditional training on athletic performance and functional movement on prepubertal tennis players
    (NSCA National Strength and Conditioning Association, 2019) Yildiz S.; Pinar S.; Gelen E.
    In recent years, studies on functional training (FT) have gained importance among older adults and health care services, but there is a lack of research on the athletic performance of children. Fundamental movement skills are basic skills that need to be improved by the age of 10, and these skills are fundamental to every sport. While developing these basic movement skills, some athletic abilities of children should not be neglected and will be a basis for the future. In this way, children will have the ability to perform their sport-specific movement skills easily when the age of specialization comes. Our hypothesis is that increased functional movement will enhance athletic performance of child tennis players. Question of the study is “will increased functional movement enhance athletic performance of child tennis players?” The purpose of this study is to investigate the effects of the FT model on the athletic performance of young athletes. This study included 28 young tennis players (mean age: 9.6 ± 0.7, height: 134.1 ± 6.8, body mass: 31.3 ± 4.1, and fitness age: 3.1 ± 1.1) who have an 80% or more dominant side based on the lateralization test and a functional movement screen (FMS) score below 75%. Ten subjects were included in each of the FT group (FTG) and the traditional training group (TTG), 8 subjects were included in the control group (CG). The training program was implemented on 3 nonconsecutive days in a week for 8 weeks. All subjects performed CG exercises; FTG performed additional exercises based on the FT model, and TTG performed additional exercises based on the TT model. Flexibility, vertical jump, acceleration, agility, balance, and FMS tests were conducted before the training program, at the end of the fourth and the eighth week. The Friedman test analysis method bearing intragroup repeated measurements was used to evaluate the effects of the training program on the dependent variables among weeks (beginning the fourth week and the eighth week) since groups display distribution in nonparametric order. The differences between the averages were tested with Wilcoxon post hoc analyses. The Kruskal-Wallis Test analyses method was used to evaluate the effects of the training program on dependent variables among the groups (CG, TTG, and FTG). The differences between the averages were tested with Mann-Whitney U post hoc analyses. Intraclass correlation coefficient (ICC) values were calculated to determine the test-retest reliability of all measurements. According to the data, there was no difference in performance measurements between CG, TTG, and FTG before the exercise program (p > 0.05), but the differences between the groups were significant (p < 0.01) after 4 weeks and 8 weeks. A significant decrease was found in FMS score in CG (p < 0.01), while no difference was found in other parameters (p > 0.05). In TTG, FMS score significantly decreased (p < 0.01), dynamic right balance (p < 0.01) and dynamic left balance (p < 0.05) increased. But, no statistically significant difference was found in other parameters (p > 0.05) in TTG. In FTG, all parameters improved, and differences were statistically significant (p ≤ 0.001). Based on these results, the FT model seems to be more effective than the TT model in terms of increasing athletic performance. © 2018 National Strength and Conditioning Association.
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    The relationship between reaction time, agility and speed performance in high-level soccer players
    (A. CARBONE Editore, 2020) Yildiz S.; Ates O.; Gelen E.; Cirak E.; Bakici D.; Sert V.; Kayihan G.; Ozkan A.
    Purpose: In soccer, reaction time (RT), speed and agility are important athletic skills that affect the performance of athletes. The aim of our study was to examine the relationship between these three athletic skills. Materials and methods: In this study, 73 high-level, active soccer players having at least 5 years of game experience (training age 10.72.9 years) participated voluntarily. The physical characteristics of the soccer players were: height (177.85.5 cm), weight (73.68.1 kg), and age (22.02.7 years). The participant's tests which were taken on non-consecutive days measured RT (Visual reaction test, Lafayette, Multi-Operational Apparatus for Reaction Time (MOART) system), speed (15 m, Fusion Sport, Smart Speed) and agility (open skills (OS) and closed skills (CS), Fusion Sport, Smart Speed). Results: A significant correlation was found between agility (CS) and speed (p0.05) however, there was no significant relationship between reaction time and agility (OS and CS) (p0.05). Conclusion: The important athletic skills of speed and quick change of direction were shown to have an effect on each other. It may be of benefit to add change of direction drills to training programs in order to improve the speed performance of the athletes. © 2020 A. CARBONE Editore. All rights reserved.
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    Acute effects of static stretching and massage on flexibility and jumping performance
    (International Society of Musculoskeletal and Neuronal Interactions, 2020) Yildiz S.; Gelen E.; Çilli M.; Karaca H.; Kayihan G.; Ozkan A.; Sayaca C.
    Objective: The purpose of this study was to evaluate the effects of static stretching and the application of massage on flexibility and jump performance. Methods: Thirty-five athletes studying Physical Education at University (mean age 23.6±1.3 years, mean height 177.8±6.3 cm and mean weight 72.2±6.7 kg) performed one of three different warm-up protocols on non-consecutive days. Protocols included static stretching [SS], combined static stretching and massage [SSM], and neither stretching nor massage [CONT]. The athletes performed flexibility, countermovement jump (CMJ) and squat jump (SJ) tests. Results: SS and SSM protocols demonstrated 12% (p<0.05) and 16% (p<0.05) respectively greater flexibility than the CONT protocol. SJ and CMJ performances were significantly decreased 10.4% (p<0.05) and 5.5% (p<0.05) respectively after the SS protocol. There was no significant difference between SSM and CONT protocol in terms of SJ and CMJ performance. Conclusion: This research indicates that whereas static stretching increases the flexibility it decreases the jumping performance of the athletes. On the other hand, the application of massage immediately following static stretching increases flexibility but does not reduce jumping performance. Considering the known negative acute effects of static stretching on performance, the application of massage is thought to be beneficial in alleviating such effects. © 2020, International Society of Musculoskeletal and Neuronal Interactions. All rights reserved.