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Öğe Cognitive Deterioration Following Strength Training in Adolescents(Wiley, 2019) Yargic, Melda Pelin; Aydin, Leyla; Erdagi, Kenan; Kiziltan, Erhan[Abstract Not Availabe]Öğe Comparison and Relationship of Quadriceps Femoris Angle, Muscle Strength, and Balance in Athletes and Non-Athletes(Springer Heidelberg, 2023) Unuvar, Bayram Sonmez; Torlak, Mustafa Savas; Gercek, Hasan; Tufekci, Osman; Erdagi, Kenan; Isik, BulentObjectiveQ-angle is an important parameter to assess quadriceps muscle's function and its effect on knee. The present study aims to investigate the potential relationships between Q-angle, muscle strength, and balance in both athlete and non-athlete populations.MethodsFifty-six athletes and non-athletes aged between 18 and 20 were included in this cross-sectional study. The Q-angle of each participant was measured using a universal goniometer. Muscle strength was evaluated using hand-held dynamometer, and static and dynamic balance were assessed using the one-leg stand test and Y balance test, respectively.ResultsOur findings revealed that athletes had a significantly smaller Q angle than non-athletes (p < 0.05). Furthermore, male participants had both higher muscle strength and better static balance with eyes closed than female participants (p < 0.05). Similarly, athletes had both higher muscle strength and better static balance than non-athletes (p < 0.05). Moreover, we found that the dominant limb had a significantly smaller Q angle than the non-dominant limb (p < 0.05). However, we did not observe a significant relationship between Q angle and dynamic balance (p > 0.05).ConclusionOur study suggests that individuals who participate in sports have lower Q angle values than those who do not participate in sports. Additionally, gender differences may exist in muscle strength and static balance. Furthermore, the Q angle was found to be lower in the non-dominant extremity compared to the dominant extremity. Finally, our study revealed a significant association between Q angle and knee muscle strength and static balance. Further research is needed to elucidate the underlying mechanisms of these relationships.Öğe The determination of the cross-sectional area of the lumbar erector spinae muscles of Olympic style weightlifting athletes by using MRI(Ios Press, 2020) Erdagi, Kenan; Poyraz, NecdetOBJECTIVE: The study aims to measure the cross-sectional area of the lumbar erector spinae muscles from L3-L4 intervertebral disc levels by using magnetic resonance images of Olympic style weightlifting athletes (male n = 15, female n = 15) and sedentary individuals (male n = 15, female n = 15). METHODS: A 1.5 Tesla device was used for the magnetic resonance imaging process of all participants. The images were then executed in ImageJ software and the cross-sectional area was measured after the required synchronization steps were conducted. RESULTS: On the images taken from L3-L4 intervertebral disc levels, we observed that right-left cross-sectional area measurements of erector spinae muscles of sedentary males and females in the control groups were smaller than those of male and female athletes in Olympic style weightlifting. We also found a symmetry between right-left cross-sectional area measurements of groups of athletes. CONCLUSIONS: From the study findings, we might conclude that trainings of Olympic style weightlifting possess a hypertrophic effect on the cross-sectional area of erector spinae muscles of Olympic style weightlifting athletes.Öğe The effects of acute moderate intensity training on hematological parameters in elite para-badminton athletes(Imr Press, 2022) Erdogdu, Murat; Yuksel, Mehmet Fatih; Isik, Bulent; Boyali, Ekrem; Erdagi, Kenan; Sevindi, TarikBackground and objective: The knowledge on the effects of para-badminton sport on physiological parameters is relatively limited in the literature. This study aims to examine the effects of moderate intensity badminton training on the hematological parameters of elite para-badminton athletes. Methods: A total of 12 para-badminton athletes, 6 female and 6 male, with international competitive experience in the Turkish Para-Badminton National Team, participated in the study. A 90-minute badminton training was applied to the athletes for their technical and tactical development. A 4 mL blood sample was taken before and after the training. Hematological parameters were analyzed from these blood samples. White blood cells, red blood cells, platelets count, and their particular subgroups such as hemoglobin, hematocrit, granulocytes, and lymphocytes were examined as the hematological parameters in this study. Results: The findings revealed that the female para-badminton athletes exhibited a significant increase in white blood cells, granulocytes percentage, red blood cells, hemoglobin, hematocrit, platelets values after training compared to pre-training. It was determined that there were significant increases in white blood cells, granulocytes, granulocytes percentage, red blood cells, and hematocrit values for male para-badminton athletes after training compared to pre-training, and significant decreases in lymphocytes percentage values. Conclusion: In conclusion, the present study showed that a single 90-minute moderate-intensity badminton training session leads to physiological changes on the blood parameters of elite parabadminton athletes. These changes, which differ by gender, can affect the health and performance of the athlete.Öğe The effects of the presence or the absence of flexor digitorum superficialis tendon of the little finger on the handgrip strength of athletes(Ios Press, 2020) Erdagi, KenanBACKGROUND: Many daily functions and sporting events need high activity level of the flexor muscles of the forearms and hands. Handgrip strength is measured by a handheld dynamometer which is a reliable, safe and inexpensive device. OBJECTIVES: The study aims to find out whether the presence or absence of flexor digitorum superficialis tendon of the fifth (little) fingers (FDS-V) affects handgrip strength of athletes from different types of sports. METHODS: The effect of presence or absence of the FDS-V in a total number of 788 fingers of athletes (male n = 200, female n = 194) was assessed using isometric handgrip strength. RESULTS: No statistically significant difference existed in handgrip strength of the participants with and without the FDS-V of the little finger (p > 0.025). CONCLUSION: The presence or absence of FDS-V of the little finger in athletes has no effect on handgrip strength.Öğe Improved Pinch Force Sense in Adolescent Female Weightlifters(Wiley, 2019) Erdagi, Kenan; Yargic, Melda Pelin; Aydin, Leyla[Abstract Not Availabe]Öğe QUADRICEPS FEMORIS ANGLE OF ELITE AND NON-ELITE ATHLETES IN OLYMPIC STYLE WEIGHTLIFTING(Khyber Medical Univ, 2022) Erdagi, Kenan; Altunok, Mehmet Kaan; Tufekci, Osman; Ozel, Raif; Isik, Bulent; Unuvar, Sonmez BayramOBJECTIVE: To find out the quadriceps femoris angle (Q-angle) values of elite and non-elite athletes in Olympic style weightlifting. METHODS: This study included 22 male elite athletes that won medals in international Olympic style weightlifting championships and 22 male non-elite athletes who won medals in national Olympic style weightlifting championships. A goniometer was used to determine the angle of the quadriceps femoris muscle while the athletes were in supine position and the muscle was inactivated. Anthropometric measurements of right-left thigh and lower leg length, right-left thigh and calf girth, and pelvic width of athletes were obtained. One repetition maximum of snatch, clean and jerk and leg strength of the athletes was recorded. To study demographic characteristics and some anthropometric values of lower extremity of the athletes, t-Test was conducted for independent groups. To compare anthropometric measurements of rightleft lower extremity and right-left Q-angle values, paired sample t-Test was used. Right-left Q-angle values and relations among other variables were studied by Pearson correlation analysis. SPSS was used for all analyses. RESULTS: Mean age was 19.73 +/- 2.97 years and 18.73 +/- 1.55 years for of elite and non-elite athletes respectively. No significant difference was observed in demographic characteristics and in some anthropometric values of lower extremity of elite and non-elite athletes (p>0.05). However, right-left Q-angle o ovalues of non-elite athletes (10.14 +/- 1.55 degrees and 10.14 +/- 1.52 degrees, respectively) were ohigher than the right-left Q-angle values of elite athletes (8.32 +/- 1.39 degrees and o8.32 +/- 1.32 degrees, respectively) [p<0.003]. CONCLUSIONS: Olympic style weightlifting, which is maintained in elite level, affects the quadriceps femoris angle.Öğe The study of the correlations between handgrip strength and some anthropometric characteristics of upper extremity of elite and subelite olympic style weightlifting athletes(Natl Olympic Committee Ukraine, Kharkov Regional Branch, 2020) Erdagi, KenanPurpose: Handgrip strength is widely used as a functionality parameter of the upper extremity and general health. The measurement of handgrip strength by dynamometry is a low cost, noninvasive method of simple applicability. The study aims to find out handgrip strength and its correlation with some anthropometric characteristics of the upper extremity and weightlifting performance of elite (international medalists) and sub-elite (national medalists) Olympic style weightlifting athletes. Material: We obtained anthropometric measurements of upper extremity of elite athletes (n=25 male, n= 20 female) and sub-elite athletes (n=25 male, n=29 female) in the study. Dominant and non-dominant handgrip strength measurements of the groups were obtained by a Jamar dynamometer, according to the recommendations of the American Association of Hand Therapists. Results: No statistically significant difference was observed in non-dominant handgrip strength of male elite and subelite weightlifting athletes. Similarly, no significant difference was observed in between some anthropometric characteristics of upper extremity and dominant and non-dominant handgrip strength of female elite and sub-elite weightlifting athletes. We didn't find any asymmetry between dominant and non-dominant handgrip strength of study groups. We found a significant correlation between dominant and non-dominant handgrip strength of male and female elite athletes and their height, body weight, BMI and weightlifting performance. Conclusions: Consequently, we might explain that adding special exercises into the general trainings of athletes to develop handgrip strength might contribute to the weightlifting performance of the athletes.Öğe The study of the correlations between handgrip strength and some anthropometric characteristics of upper extremity of elite and subelite olympic style weightlifting athletes(Natl Olympic Committee Ukraine, Kharkov Regional Branch, 2020) Erdagi, KenanPurpose: Handgrip strength is widely used as a functionality parameter of the upper extremity and general health. The measurement of handgrip strength by dynamometry is a low cost, noninvasive method of simple applicability. The study aims to find out handgrip strength and its correlation with some anthropometric characteristics of the upper extremity and weightlifting performance of elite (international medalists) and sub-elite (national medalists) Olympic style weightlifting athletes. Material: We obtained anthropometric measurements of upper extremity of elite athletes (n=25 male, n= 20 female) and sub-elite athletes (n=25 male, n=29 female) in the study. Dominant and non-dominant handgrip strength measurements of the groups were obtained by a Jamar dynamometer, according to the recommendations of the American Association of Hand Therapists. Results: No statistically significant difference was observed in non-dominant handgrip strength of male elite and subelite weightlifting athletes. Similarly, no significant difference was observed in between some anthropometric characteristics of upper extremity and dominant and non-dominant handgrip strength of female elite and sub-elite weightlifting athletes. We didn't find any asymmetry between dominant and non-dominant handgrip strength of study groups. We found a significant correlation between dominant and non-dominant handgrip strength of male and female elite athletes and their height, body weight, BMI and weightlifting performance. Conclusions: Consequently, we might explain that adding special exercises into the general trainings of athletes to develop handgrip strength might contribute to the weightlifting performance of the athletes.Öğe Study on the cross-sectional area of the multifidus muscle at the L4-L5 level on ultrasound images of Olympic-style weightlifting and judo athletes(Ios Press, 2021) Erdagi, Kenan; Poyraz, NecdetBACKGROUND: The multifidus muscle is located near the spine and controls the erection of the spine and stabilization during movements of the spine and extremities, and assists in all other spinal movements. Differences in paraspinal muscles between sides and levels, particularly in he multifidus, have been proposed as possible indicators of low back pain or spinal pathology. OBJECTIVE: This study aims to examine the cross-sectional area of the lumbar multifidus muscle at L4-L5 vertebral levels on ultrasound images of athletes in Olympic-style weightlifting, judo athletes and sedentary individuals. METHODS: This study included asymptomatic male athletes (athletes in Olympic-style weightlifting, n = 17, age: 19.24 +/- 1.88, judo athletes, n = 17, age: 19.18 +/- 1.23) and sedentary individuals (n = 17, age: 19.88 +/- 1.31). The cross-sectional area of lumbar multifidus muscles was assessed bilaterally at the L4-L5 segments level in prone and using ultrasound imaging. RESULTS: Lumbar multifidus muscle cross-sectional areas of athletes in Olympic-style weightlifting and judo athletes were larger than those of sedentary individuals (p < 0.004). No asymmetric development was observed in cross-sectional areas of right-left lumbar multifidus muscle at L4-L5 levels of athletes in Olympic-style weightlifting and sedentary individuals (p > 0.008). The cross-sectional areas of the right and left lumbar multifidus muscle at L5 segment of individuals in judo athletes was found to be asymmetrical (p < 0.008). CONCLUSION: Our study shows that the cross-sectional areas of athletes in Olympic-style weightlifting and judo athletes are larger than that of sedentary individuals. The difference in the cross-sectional area of the lumbar multifidus muscle of athlete and sedentary groups might be said to result from hypertrophic effect of trainings of these athletes on the cross-sectional area of the lumbar multifidus muscle.Öğe A study on the determination of handgrip strength of Olympic style weightlifting athletes(Iermakov S S, 2020) Erdagi, Kenan; Tufekci, Osman; Yeseri, Mustafa; Yuksel, Mehmet F.; Turgut, Nimet; Eroglu, Burak E.Purpose: Handgrip strength is widely accepted as a functionality parameter to assess upper extremity performance. The measurement of hand grip strength by dynamometry is a low cost, non-invasive method of simple applicability.The present study is based on the association of dominant and non-dominant handgrip strength with demographic and anthropometric characteristics; height, body weight, body mass index, upper arm length, forearm length, hand length, forearm circumference, upper arm circumference. Material: The study included 70 male athletes in olympic style weightlifting (age: 18.06 +/- 2.18, height:1.74 +/-.06 m, body weight: 76.09 +/- 13.04 kg). A total of 70 sedentary individuals as a control group (age 18.11 +/-.18, height:1.75 +/-.04 m, body weight: 74.01 +/- 13.94 kg) were also taken to compare study findings.The data obtained was analyzed by SPPS for Windows, version 25. Handgrip strength measurements were obtained by a Jamar dynamometer, according to the recommendations of the American Association of Hand Therapists. Results: It was found that the values of dominant and non-dominant handgrip strength, upper arm circumference and forearm circumference length of the weightlifting athletes were higher than those of sedentary individuals (p<.001). No asymmetry was observed in dominant and non-dominant handgrip strength values of the athletes and sedentary individuals. The correlations were noted between dominant and non-dominant handgrip strength values of weightlifting athletes and demographic characteristics, some anthropometric characteristics of upper extremity and weightlifting performance. Conclusions: The variability of handgrip strength might largely be explained by some anthropometric characteristics of upper extremity.Öğe A study on the determination of handgrip strength of Olympic style weightlifting athletes(Iermakov S S, 2020) Erdagi, Kenan; Tufekci, Osman; Yeseri, Mustafa; Yuksel, Mehmet F.; Turgut, Nimet; Eroglu, Burak E.Purpose: Handgrip strength is widely accepted as a functionality parameter to assess upper extremity performance. The measurement of hand grip strength by dynamometry is a low cost, non-invasive method of simple applicability.The present study is based on the association of dominant and non-dominant handgrip strength with demographic and anthropometric characteristics; height, body weight, body mass index, upper arm length, forearm length, hand length, forearm circumference, upper arm circumference. Material: The study included 70 male athletes in olympic style weightlifting (age: 18.06 +/- 2.18, height:1.74 +/-.06 m, body weight: 76.09 +/- 13.04 kg). A total of 70 sedentary individuals as a control group (age 18.11 +/-.18, height:1.75 +/-.04 m, body weight: 74.01 +/- 13.94 kg) were also taken to compare study findings.The data obtained was analyzed by SPPS for Windows, version 25. Handgrip strength measurements were obtained by a Jamar dynamometer, according to the recommendations of the American Association of Hand Therapists. Results: It was found that the values of dominant and non-dominant handgrip strength, upper arm circumference and forearm circumference length of the weightlifting athletes were higher than those of sedentary individuals (p<.001). No asymmetry was observed in dominant and non-dominant handgrip strength values of the athletes and sedentary individuals. The correlations were noted between dominant and non-dominant handgrip strength values of weightlifting athletes and demographic characteristics, some anthropometric characteristics of upper extremity and weightlifting performance. Conclusions: The variability of handgrip strength might largely be explained by some anthropometric characteristics of upper extremity.Öğe THE USE OF COMPUTER BASED TEST BATTERY FOR THE ASSESSMENT OF COGNITIVE FUNCTIONS IN ELITE-LEVEL STRENGTH TRAINING(IEEE, 2019) Yargic, Melda Pelin; Erdagi, Kenan; Aydin, Leyla; Kiziltan, ErhanThe aim of this study was to propose a standard test battery consisting of necessary tools for measuring and comparing the various aspects of cognitive outcomes. The battery was used to determine whether adolescent women performing regular elite-level strength training differed from their sedentary peers in terms of cognition, and also to determine how a single session of strength training affects cognition in highly trained adolescents. Motor functions, ability of sustaining attention and executive functions of 25 elite female weightlifters and 22 sedentary females were evaluated through finger tapping performance, visual reaction time (VRT) and recognition visual reaction time (R-VRT) data. Weightlifters were tested before and after a training session, sedentary controls were tested only during resting. There was a significant increase in mean complex R-VRT of weightlifters after training (p<0.01). In R-VRT tests, rate of false answers increased significantly after training (p<0.05). Mean VRT of weightlifters (during rest) and sedentary peers were not different in any of the tests (p>0.05). Total number of taps and mean inter-tap intervals did not show any difference in the weightlifter group before and after training, also between weightlifters and sedentary controls (p>0.05). Elite level strength training does not improve cognition in adolescence. Adolescent weightlifters' executive functions are deteriorated following a single training session however, this effect is temporary.
