Browsing by Author "Seyhan S."

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    Investigation of the protective effects of acetyl L-carnitine on cisplatin-induced uterus toxicity
    (Gazi Universitesi, 2018) Seyhan S.; Saribas G.S.; Akcay N.C.; Gurgen S.G.; Akyol S.N.; Goktas G.; Hirfanoğlu I.M.; Erdogan D.; Ozogul C.
    Objective: The aim of the study was to investigate the prophylactic effects of acetyl L-carnitine against to uterus induced by cisplatin. Methods: Twenty-four female Wistar albino rats were divided into four groups: group I (control) was administered with saline; group II was administered with acetyl L-carnitine; group III was administered with cisplatin; group IV was pretreated with acetyl L-carnitine before cisplatin intraperitoneal injection. After 72h of cisplatin injection uterine tissue was removed. Histological and immunohistochemical investigations were performed, respectively. Results: We found that the number of TUNEL and caspases positive cells were increased in the endometrial epithelium, subepithelial connective tissue, endometrial glands and stroma in group III compare to the other groups. Furthermore inflammation and edema were observed in uterus of rats in group III. Conclusion: We can concluded that pretreatment of acetyl L-carnitine administration has protective effect on histological alteration of uterus caused by cisplatin. ©Copyright 2018 by Gazi University Medical Faculty.
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    Obesity prevalence and physical fitness in school-aged children
    (Horizon Research Publishing, 2019) Dinç N.; Güzel P.; Özbey S.; Beşikçi T.; Seyhan S.; Kalkan N.; Gezer G.
    The purpose of this study is to determine the overweight and obesity prevalence among students studying in primary school by ages and to reveal the relation with physical activity. 1946 students aged between 7 and 11 and receiving primary education in a district of Manisa province have participated in this study. There are 885 female students and 1061 male students. Height measurements, body composition measurements, vertical jump test and 30mt tests of the participants were performed respectively. SPSS 22 program was used for statistical analysis. Frequency distributions and percentage values were presented in statistical notations. Pearson correlation analysis was performed in data analysis. In conclusion, it is observed that 12% of female students are overweight, 9.5% are obese and 21.5% are both overweight and obese. 8.8% of male students are overweight, 11.3% are obese and 20.1% are both overweight and obese. There is also a statistically correlation between obesity and age and parameters of physical fitness. In order to reduce the prevalence of overweight and obesity in children, school and community-based programs must be planned to encourage children to do physical activity and exercise and to prefer low calorie intake. The content and importance of these programs should be made applicable by parents and local governments. © 2019 by authors, all rights reserved.
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    Effects of 8-Week Strength Training on the Vertical Jump Performance of the Traceurs
    (Sciedu Press, 2019) Seyhan S.
    The parkour is a physical activity that contains special technique applications and requires a great number of jumps. The purpose of this study was to investigate the effects of 8-week strength training on the jump heights of the traceurs (parkour practitioners). A total of 12 traceurs, including 6 individuals as the control group and 6 individuals as the strength group, were included in the study. The control group was provided with parkour training sessions twice a week, and the other group provided with both strength and parkour training sessions twice a week. Each participant's vertical jumps were recorded with the high-speed camera in the validated My Jump 2 application. The mean age of the traceurs control group was 19±.89 years, 173.67±4.63 cm, body mass 66.5±5.32 kg; experimental group was 19.5±1.05 years, 175.83±8.86 cm, and body mass 67.67±7.20 kg. Also according to the results, it can be said that a significant increase was observed in countermovement jump (CMJ) vertical jump heights (p=0.028) of the study group at the end of the 8-week strength trainings compared to the control group and that the strength training provided a positive contribution to vertical jump heights. On the other hand, there was no significant difference (p=0.075) in the control group. At the same time, the CMJ height values of the participants who performed strength training increased 4.97±0.09%. Learning of the vertical jump heights, which is an important parameter for successful performance in traceurs, can enable the coaches and athletes to prepare a better training program. © 2019 Journal of Curriculum and Teaching. All rights reserved.
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    Super High-Intensity Continuous Training: A New Approach to Aerobic Training with Huge Effects on Elite Team Handball Players
    (Springer, 2023) Milosevic M.; Dopsaj M.; Jourkesh M.; Milosevic M.; Seyhan S.
    The purpose of this study was to examine and evaluate the effectiveness of Super High-Intensity Continuous Training (SHCT) on elite team handball players. SHCT is a new approach of aerobic training that combines the advantages of both continuous and interval training methods. The study included 14 professional handball players who are members of the first national handball league team. The participants were trained five times a week over eight weeks using the SHCT method. The training intensity for each athlete was tailored to their individual oxygen consumption. Significant (P < 0.001) improvements were obtained in all measured and evaluated indicators of aerobic abilities, including maximal oxygen uptake (VO2max), maximum relative oxygen uptake (VO2rel), running speed at which maximum oxygen uptake occurs (VO2max), when comparing the pre-, intermediate, and post-tests, as well as a huge positive effect (η 2G reaching from 0.19 to 0.49 and η 2p of 0.91). These effects from short cycles of aerobic training have not been previously obtained in studies involving elite and and recreational athletes, whether using continuous or interval training approaches. In addition to the above,SHCT showed several other positive features. As such, we recommend further research into SHCT and encourage its integration into athletic training practices. © 2023, Beijing Sport University.
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    Investigation of Foot Biomechanics in 5-15 Years Old Children Performing Gymnastics; [5-15 Yaş Arası Cimnastik Yapan Çocuklarda Ayak Biyomekaniğinin İncelenmesi]
    (Ataturk Universitesi, 2024) Seyhan S.; Açar G.; Yaşasin Y.; Üzümcü B.; Sinen H.
    Gymnastics is a basic sport branch consisting of eight disciplines and is recommended to be taught to children at an early age. Our study aimed to evaluate the foot biomechanics and static plantar pressure of children aged 5-15 years who were performing rhythmic and artistic gymnastics. The study included 58 (19 Men/39 Women) child gymnasts and aged 5-15 years. Sociodemographic form, static plantar pressure analysis in bipedal position with pedobarography device, hallux valgus angle measurement (HVA), navicular drop test (NDT) and subtalar pronation angle measurement were performed respectively. The measurements were performed in the same way by an experienced expert. IBM Statistical Package for Social Sciences Version 26.0 (SPSS inc, Chicago, IL, USA) statistical programme was used. Tests were analyzed pairwise with Pearson correlation (p≤.05). The mean age was 7.43±2.37 years, height 124.68±16.97 cm, weight 27.39±11.39 kg and body mass index (BMI) 16.99±3.22 kg/m2. There was no significant difference between weighted and unweighted in NDT results. In pedobarography analysis, hindfoot percentages were higher than forefoot percentages in static bipedal positions. A positive correlation was found between HVA and subtalar angles (p=0.00). In children performing artistic and rhythmic gymnastics, lateral ankle sprain may be observed due to a pronation tendency in subtalar angles. In addition, in the static bipedal position, distortions occurred in the bipedal static force center because the percentage of hindfoot pressure in plantar pressures was higher than the forefoot. Studies with foot-ankle exercises are needed for these. © 2024, Ataturk Universitesi. All rights reserved.
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    The Effect of Biomechanical and Viscoelastic Properties of Gastrocnemius (Lateral-Medial) Muscle and Achilles Tendon on Jumping Performance in Professional Soccer Players
    (Nevzat Demirci, 2024) Seyhan S.
    Anaerobic performance (vertical jumps) is an important indicator in determining athletic performance in soccer. The aim of this study was to investigate the effects of biomechanical and viscoelastic properties of lateral and medial gastrocnemius (LG&MG) muscle and achilles tendon (AT) on jumping performance of professional soccer players. A total of 21 male professional soccer players with a mean age of 18.19±0.40 years, a mean height of 180.48±6.25 cm, a mean body weight of 70.71±7.82 kg, and a mean BMI of 21.66±1.65 kg/m2were included in this study. LG and MG muscle, as well as AT biomechanical and viscoelastic properties were evaluated with Myoton Pro device. Measurements were performed in the prone position of the soccer players, LG and MG at 50° plantar flexion, and AT at 0° (neutral position) at an angle of 4 cm above the calcaneal tubercle. Counter movement jump (CMJ) were recorded with the high-speed camera in the validated My Jump 2 application. A significant correlation was observed between the LG (F) tension value and CMJ (P) value and between the MG (R&C) values and the CMJ (F&P) value of professional soccer players (p<0.05). There was no significant relationship between AT values and CMJ values (p>0.05). It should not be forgotten that training coaches on this subject and applying this information to soccer players by conscious coaches will bring about increases in the athletic performance of soccer players, and all these performance characteristics can be achieved with planned and programmed training. © 2024 Nevzat Demirci. All rights reserved.
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    Selective Activation of the Infraspinatus During External Rotation Exercises in Participants with Rounded Shoulder Posture: Comparison of Three Common Exercises and Muscle Architecture-Based Exercise
    (Multidisciplinary Digital Publishing Institute (MDPI), 2025) Soylu C.; Atalay E.S.; Haksever B.; Demir P.; Seyhan S.; Bıyıklı T.
    Background and Objectives: The infraspinatus muscle is critical for shoulder stability and external rotation, yet achieving selective activation during exercises remains challenging. This study explores the effectiveness of a novel muscle architecture-based position (MABER) compared to traditional exercises in individuals with rounded shoulder posture. Materials and Methods: This prospective, cross-sectional study evaluated the selective activation of the infraspinatus during external rotation exercises in participants with rounded shoulder posture. Thirty-two participants (17 males and 15 females) were recruited. Electromyographic (EMG) activity of the middle trapezius, posterior deltoid, and infraspinatus muscles in the dominant limb was recorded during four exercise positions: standing external rotation (SER), side-lying external rotation (SDER), scapular plane external rotation (SPER), and MABER. Results: MABER produced the highest infraspinatus activity (p < 0.001), while the lowest activity was observed during SPER (p < 0.001). The SER position generated higher posterior deltoid activity compared to other positions (p < 0.001). The SDER position demonstrated the highest infraspinatus/posterior deltoid activity ratio (p < 0.001). Conclusions: The MABER position can be used as an effective exercise to strengthen the infraspinatus muscle. This study contributes to the literature by comparing MABER with traditional exercises and highlights its potential benefits for individuals with rounded shoulder posture. © 2025 by the authors.
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    Test-Retest Reliability and Validity of TecnoBody D-Wall to Assess the Range of Motion During Overhead Squat in Healthy Individuals
    (Multidisciplinary Digital Publishing Institute (MDPI), 2025) Soylu C.; Acar G.; Uzumcu B.; Demir P.; Seyhan S.; Biyikli T.
    This study evaluated the validity and reliability of the TecnoBody D-Wall system in assessing joint range of motion (ROM) during overhead squat movements in healthy individuals, using Kinovea as a reference tool for data comparison. A total of 29 participants (16 males, 13 females) with a mean age of 28.41 ± 6.66 years were included. Measurements were conducted for hip and knee joint angles in the sagittal plane, with three repetitions per participant analyzed using both systems. The D-Wall system employed a 3D Kinect V2 camera and force platform, while Kinovea used 2D video-based motion analysis. The results demonstrated excellent agreement between the two systems, with intra-class correlation coefficients (ICC) ranging from 0.79 to 0.99. For the knee joint, the test-retest ICC values were 0.99 (95% CI: 0.97–0.99) for Kinovea and 0.98 (95% CI: 0.95–0.99) for the D-Wall on the right side, and 0.98 (95% CI: 0.97–0.99) for Kinovea and 0.88 (95% CI: 0.79–0.94) for the D-Wall on the left side. For the hip joint, test-retest ICC values were 0.99 (95% CI: 0.97–0.99) for Kinovea and 0.94 (95% CI: 0.88–0.97) for the D-Wall on the right side, and 0.98 (95% CI: 0.97–0.99) for Kinovea and 0.93 (95% CI: 0.87–0.97) for the D-Wall on the left side. Bland–Altman plots confirmed good agreement, with no significant systematic bias observed. Both systems showed statistically insignificant differences (p > 0.05) between measurements, and correlation values ranged from 0.83 to 0.99, indicating strong associations. These findings highlight the high validity and reliability of both TecnoBody D-Wall and Kinovea systems in measuring joint angles during dynamic movements. The comparable accuracy between systems suggests that either system can be effectively utilized in clinical or research settings, depending on specific needs and resource availability. © 2025 by the authors.