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Öğe Acute effects of dynamic stretching exercises on vertical jump performance and flexibility(Springernature, 2024) Caylan Gurses, Kubra; Otag, Aynur; Gurses, Omer AlperenPurposeThis study was conducted to examine the acute effects of dynamic stretching exercises (DSE) on vertical jump height (VJH), muscle strength (MS), and flexibility in athletes and sedentary individuals.MethodsThe study included 28 athletes and 28 sedentary. Athlete and sedentary groups were equally distributed into two groups DSE group of 3 and 6 min. At the beginning of the trial, VJH, MS, and flexibility were measured. VJH was measured using the Vertimetric Vertical Jump, was assessed using the Lafayette Manual Muscle Tester, and flexibility was evaluated using a sit-and-reach bench. Both groups jogged for 5 min. One group performed a 3-min DSE, while the other group performed a 6-min DSE. Then, all measurements were repeated immediately after, at 5 min, 10 min, and 15 min (MS was measured only before and immediately after stretching sessions).ResultsIn our study comparing athletes and sedentary participants, athletes exhibited significant differences in flexibility and VJH, regardless of the duration of stretching. For the 3-min DSE group, flexibility increased immediately after stretching and remained consistent. In the 6-min DSE group, flexibility continued to increase for up to 5 min after DSE, and then it plateaued. When comparing the VJH of athletes in the 3-min and 6-min DSE groups, significant differences were found at 5 and 15 min after DSE.ConclusionsIt is thought that including DSE in warm-up protocols will positively affect VJH and flexibility. Six-minute DSE increased strength in sedentary but did not affect strength in athletes.Öğe Acute effects of dynamic stretching exercises on vertical jump performance and flexibility [2](Springer-Verlag Italia s.r.l., 2025) Caylan Gurses, Kubra; Otag, Aynur; Gurses, Omer AlperenPurpose: This study was conducted to examine the acute effects of dynamic stretching exercises (DSE) on vertical jump height (VJH), muscle strength (MS), and flexibility in athletes and sedentary individuals. Methods: The study included 28 athletes and 28 sedentary. Athlete and sedentary groups were equally distributed into two groups DSE group of 3 and 6 min. At the beginning of the trial, VJH, MS, and flexibility were measured. VJH was measured using the Vertimetric Vertical Jump, was assessed using the Lafayette Manual Muscle Tester, and flexibility was evaluated using a sit-and-reach bench. Both groups jogged for 5 min. One group performed a 3-min DSE, while the other group performed a 6-min DSE. Then, all measurements were repeated immediately after, at 5 min, 10 min, and 15 min (MS was measured only before and immediately after stretching sessions). Results: In our study comparing athletes and sedentary participants, athletes exhibited significant differences in flexibility and VJH, regardless of the duration of stretching. For the 3-min DSE group, flexibility increased immediately after stretching and remained consistent. In the 6-min DSE group, flexibility continued to increase for up to 5 min after DSE, and then it plateaued. When comparing the VJH of athletes in the 3-min and 6-min DSE groups, significant differences were found at 5 and 15 min after DSE. Conclusions: It is thought that including DSE in warm-up protocols will positively affect VJH and flexibility. Six-minute DSE increased strength in sedentary but did not affect strength in athletes. © The Author(s), under exclusive licence to Springer-Verlag Italia S.r.l., part of Springer Nature 2024.Öğe Effect of increasing maximal aerobic exercise on serum gonadal hormones and alpha-fetoprotein in the luteal phase of professional female soccer players(SOC PHYSICAL THERAPY SCIENCE, 2016) Otag, Aynur; Hazar, Muhsin; Otag, Ilhan; Beyleroglu, Malik[Purpose] The performance of female athletes during their menstrual period has attracted the attention of researchers for many years. It is known that the menstrual period changes with exercise. Alpha-fetoprotein (AFP) is an oncofetal protein. In this study, the effect of maximal aerobic exercise in the luteal phase on some hormones and AFP in female athletes was researched. [Subjects and Methods] Twelve volunteers and healthy female footballers with normal menstrual cycles volunteered for this study as subjects. All the participants performed a shuttle run test. Blood samples were taken before, after, and one hour after exercise. Serum AFP, estrogen, progesterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH) values were measured using an auto analyzer and original kits. Heart rate measurements were performed before and after the exercise. [Results] AFP activity had significantly decreased after 1 h of recovery from the exercise in the female soccer players, and estrogen and LH activity had significantly increased immediately after the exercise. Progesterone activity had significantly decreased immediately after the exercise. FSH values had significantly increased immediately after the exercise. [Conclusion] The results of the present study show there were significant decreases in the values of AFP, which is a cancer parameter, 1 hour after the exercise. This result may be valuable in future physiotherapy studies on the relationship between exercise and cancer.Öğe Estimation of the femur length from its proximal measurements in Anatolian Caucasians by artificial neural networks(TAYLOR & FRANCIS LTD, 2016) Otag, Ilhan; Otag, Aynur; Akkoyun, Serkan; Cimen, MehmetFemora are a well preserved section of the skeleton after death. Therefore, they are commonly used in the field of forensic sciences, physical anthropology and anatomy. In addition, femur morphometry is helpful in finding sex or side (left or right) differences. The femur also shows characteristics of certain populations. Femur length is important for calculation of individual stature. In this study, the artificial neural network method was used to estimate femur length. In total, 230 femora exemplar were used. The three input parameters of the method were the distance between trochanter major top point and trochanter minor bottom point, the diameter of caput femoris and the diameter of collum femoris. By using these parameters, the artificial neural network estimation on femur length was performed. The results show that the method is capable of performing this estimation. In addition, sex discrimination was performed and achieved with 82% accuracy. As well as the identification of sex or side differences, morphometry of the proximal femur is necessary and important for surgical procedures.Öğe Frontal Lobe Morphometry with MRI in a Normal Age Group of 6-17 Year Olds(KOWSAR PUBL, 2013) Kosar, M. Ilkay; Otag, Ilhan; Sabanciogullari, Vedat; Atalar, Mehmet; Tetiker, Hasan; Otag, Aynur; Cimen, MehmetBackground: Morphometric data of the frontal lobe are important for surgical planning of lesions in the frontal lobe and its surroundings. Magnetic resonance imaging (MRI) techniques provide suitable data for this purpose. Objectives: In our study, the morphometric data of mid-sagittal MRI of the frontal lobe in certain age and gender groups of children have been presented. Patients and Methods: In a normal age group of 6-17-year-old participants, the length of the line passing through predetermined different points, including the frontal pole (FP), commissura anterior (AC), commissura posterior (PC), the outermost point of corpus callosum genu (AGCC), the innermost point of corpus callosum genu (IGCC), tuberculum sella (TS), AGCC and IGCC points parallel to AC-PC line and the point such line crosses at the frontal lobe surface (FCS) were measured in three age groups (6-9, 10-13 and 14-17 years) for each gender. Results: The frontal lobe morphometric data were higher in males than females. Frontal lobe measurements peak at the age group of 10-13 in the male and at the age group of 6-13 in the female. In boys, the length of FP-AC increases 4.1% in the 10-13 age group compared with the 6-9-year-old group, while this increase is 2.3% in girls. Conclusion: Differences in age and gender groups were determined. While the length of AGCC-IGCC increases 10.4% in adults, in children aged 6-17, the length of AC-PC is 11.5% greater than adults. These data will contribute to the preliminary assessment for developing a surgical plan in fine interventions in the frontal lobe and its surroundings in children.Öğe Geometric analysis of medio-lateral position of patella: A new measuring tool(MEDKNOW PUBLICATIONS & MEDIA PVT LTD, 2014) Otag, Aynur; Otag, Ilhan; Sabanciogullari, Vedat; Cimen, MehmetBackground: Evaluation of medio-lateral position of patella is necessary for diagnosis and treatment of patellofemoral diseases. Objective: In the present study, we aimed to evaluate medio-lateral patellar position differences and to define a new practical measuring tool which enables us to analyze relationships of the points at the knee. Materials and Methods: Total of 120 healthy volunteers (60 men and 60 women) were included in our study and both of their knees were measured. In the research, the gender groups and right-left differences were evaluated. In the measurements, a four-lever measuring tool designed for this study was used. The four anatomic points of the knee which are center of patella, epicondylus lateralis, epicondylus medialis and middle point of tuberositas tibiae were used. Results: While patella is 76% lateral in the right knee, it is 90% lateral in the left knee in men. As for woman, while it is 50% lateral in the right-knee, it is 30% lateral in the left-knee. In medio-lateral patellar position, while bilateral asymmetry is 28% in men, it is 50% in women. In measurements of knees of women and men, significant differences were detected both in the right and left knees (P < 0.05 and P < 0.001). Conclusion: The patellofemoral order differences between men and women can explain anatomic reasons of patellofemoral diseases, which are encountered more in women than men.Öğe Responses of trace elements to aerobic maximal exercise in elite sportsmen.(2014) Otag, Aynur; Hazar, Muhsin; Otag, Ilhan; Gürkan, Alper Cenk; Okan, IlyasTrace elements are chemical elements needed in minute quantities for the proper growth, development, and physiology of the organism. In biochemistry, a trace element is also referred to as a micronutrient. Trace elements, such as nickel, cadmium, aluminum, silver, chromium, molybdenum, germanium, tin, titanium, tungsten, scandium, are found naturally in the environment and human exposure derives from a variety of sources, including air, drinking water and food. The Purpose of this study was investigated the effect of aerobic maximal intensity endurance exercise on serum trace elements as well-trained individuals of 28 wrestlers (age (year) 19.64±1.13, weight (Kg) 70.07 ± 15.69, height (cm) 176.97 ± 6.69) during and after a 2000 meter Ergometer test protocol was used to perform aerobic (75 %) maximal endurance exercise. Trace element serum levels were analyzed from blood samples taken before, immediately after and one hour after the exercise. While an increase was detected in Chromium (Cr), Nickel (Ni), Molybdenum (Mo) and Titanium (Ti) serum levels immediately after the exercise, a decrease was detected in Aluminum (Al), Scandium (Sc) and Tungsten (W) serum levels. Except for aluminum, the trace elements we worked on showed statistically meaningful responses (P < 0.05 and P < 0.001). According to the responses of trace elements to the exercise showed us the selection and application of the convenient sport is important not only in terms of sportsman performance but also in terms of future healthy life plans and clinically.Öğe A way in determination of patellar position: Ligamentum patellae angle and a neural network application(PWN-POLISH SCIENTIFIC PUBL, 2014) Otag, Ilhan; Otag, Aynur; Akkoyun, Serkan; Cimen, MehmetThe patients may show various patellar order samples. Patellofemoral disorders are defined in all cases with patellofemoral pain syndrome. Right and left knees belonging to the 60 men and 60 women volunteers were measured. By using the distances from the measurements, ligamentum patellae (LP) angle was estimated by artificial neural network (ANN) method. According to the results, one can confidently say that the method is capable for estimating this angle. The related root mean square error belonging to the test data of ANN is between 0.48 degrees and 1.18 degrees. These angles for women are two times larger than men's. Eventually, the risk of patellofemoral disorders is greater for women than men. (C) 2014 Nalecz Institute of Biocybemetics and Biomedical Engineering. Published by Elsevier Urban & Partner Sp. z o.o. All rights reserved.
