Browsing by Author "Kaynak H."

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    Comparison of ankle proprioception between blind and healthy athletes
    (SAGE Publications Ltd, 2014) Özer M.; Kaynak H.; Atik A.; Şilil M.K.; Altun M.; Akseki D.
    Objectives: The positive effect of the visual sensation on the proprioceptive quality is well known. Although other senses of the congenital blind individuals have been proven to be increased more than healthy ones, there has been no data about the proprioceptive quality of congenital blind persons. The aim of this study is to determine the quality of ankle proprioception in congenital blind athletes. Methods: 15 congenital blind athletes (10 males and 5 females) with a mean age of 24 ± 2.9 (ranging from 20 to 29), and 15 healthy athletes (10 males and 5 females) with a mean age of 24.6 ± 3.05 (ranging from 20 to 29), from the same athletic department, were included in the study. Proprioception was evaluated by using the technique of joint position sense, and absolut errors during the reproduction of six target angles (plantar flexion 100, dorsiflexion 50, inversion 100 and 200, eversion 100 and 200) were detected in dominant and nondominant ankles of both groups. Athletes were measured both eyes open and closed. Statistical analysis was done by using Mann-Whitney U and Wilcoxon Signed Ranks tests. Results: When dominant extremities were compared while eyes open, there was only a difference in 50 dorsiflexion measurements statistically in favor of blind ones (p<0.05). When dominant extremities were compared while eyes closed, blind athletes got less wrong in four of the six target angles statistically (p<0.01), when non-dominant extremities were compared while eyes closed, blind athletes got less wrong in all angles statistically (p<0.01). The ankle proprioception of the blind athletes were better then the normal athletes. The ankle propriceptions of the normal athletes further deteriorated when their eyes were closed. Conclusion: We found that the ankle proprioceptions of congenital blind athletes were better than the normal athletes. So additional closed-eyes exercises can help to reach a high proprioceptive level of athletes in a normal season which in terms may decrease accidental traumas. © The Author(s) 2014.
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    Prevalence of sleep disorders in the Turkish adult population epidemiology of sleep study
    (Springer, 2015) Demir A.U.; Ardic S.; Firat H.; Karadeniz D.; Aksu M.; Ucar Z.Z.; Sevim S.; Ozgen F.; Yilmaz H.; Itil O.; Peker Y.; Aygul F.; Kiran S.; Gelbal S.; Cepni Z.; Akozer M.; Neyal A.; Cilli A.; Ozsancak A.; Kutlu A.; Salepci B.; Baklan B.; Oktay B.; Tuncel D.; Levent E.; Ekinci E.; Eyuboglu F.; Yildiz F.; Kirbas G.; Kaynak H.; Aydin H.; Boyaci H.; Bora I.; Oztura I.; Aslan K.; Gunhan K.; Habesoglu M.A.; Unlu M.; Demet M.; Dursunoglu N.; Tascilar N.; Yavuz N.; Erdinc O.; Araz O.; Dogan O.T.; Yetkin O.; Celik P.; Alp R.; Altin R.; Bilgin S.; Ismailogullari S.; Gazioglu S.; Ozkurt S.; Velioglu S.; Yetkin S.; Kuyucu T.; Atay T.; Uygunoglu U.; Tutar U.; Celik Y.; Bulbul Y.
    Sleep disorders constitute an important public health problem. Prevalence of sleep disorders in Turkish adult population was investigated in a nationwide representative sample of 5021 Turkish adults (2598 women and 2423 men, response rate: 91%) by an interviewer-administered questionnaire. Insomnia was defined by the DSM-IV criteria, habitual snoring and risk for sleep-related breathing disorders (SDB) by the Berlin questionnaire, excessive daytime sleepiness (EDS) by the Epworth sleepiness scale score, and restless legs syndrome (RLS) by the complaints according to the International Restless Legs Syndrome Study Group criteria. Mean age of the participants was 40.7 ± 15.1 (range 18 to 90) years. Prevalence rates (men/women) were insomnia 15.3% (10.5%/20.2%; P < 0.001), high probability of SDB 13.7% (11.1%/20.2%; P < 0.001), EDS 5.4% (5.0%/5.7%; P: 0.09), RLS 5.2% (3.0%/7.3%; P < 0.001). Aging and female gender were associated with higher prevalence of sleep disorders except for habitual snoring. Prevalence rates of the sleep disorders among Turkish adults based on the widely used questionnaires were close to the lower end of the previous estimates reported from different parts of the world. These findings would help for the assessment of the health burden of sleep disorders and addressing the risk groups for planning and implementation of health care. Sleep and Biological Rhythms © 2015 Japanese Society of Sleep Research.
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    Effect of hot and cold applications on elbow proprioception
    (Edizioni Minerva Medica, 2019) Kaynak H.; Altun M.; Özer M.; Akseki D.
    BACKGROUND: Purpose of this study was to investigate the effects of cold application (CA) and hot application (HA) on elbow proprioception in healthy volunteers. CA and HA were applied locally during 15 minutes on the elbow joint and the effect was measured after that. METHODS: A repeated-measure design with 6 (2x3) randomly assigned test conditions: 1) no application on 30° angle; 2) after HA on 30° angle; 3) after CA on 30° angle; 4) no application on 60° angle; 5) after HA on 60o angle and 6) after CA on 60o angle. A total of 82 healthy volunteers (35 women, 47 men) whose ages ranged between 18 and 28 years (20.93±2.13) were included in the study. Proprioception of the elbow was measured by using a digital goniometer with the technique of active joint position sense at the beginning of the study. The tests were repeated at weekly intervals after applying cold or hot in mixed order. Two target angles were defined 30 and 60 degrees of elbow flexion. RESULTS: Reproduction errors were significantly decreased following HA in both target angles (P<0.017). Following CA, significantly increased reproduction error was found only in 30-degree target angle (P<0.017). CONCLUSIONS: We obtained increased elbow proprioception following HA, which means increased proprioceptive acuity of the elbow but a decrease following CA in healthy volunteers. These findings may be useful in prevention and treatment of sports injuries, if supported by future studies. © 2018 EDIZIONI MINERVA MEDICA.
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    Effect of Force Sense to Active Joint Position Sense and Relationships between Active Joint Position Sense, Force Sense, Jumping and Muscle Strength
    (Routledge, 2020) Kaynak H.; Altun M.; Tok S.
    We aimed to investigate the effect of external load on the joint position sense (JPS) accuracy and its relation to the target jump height. The present study also aimed to explore the relationship between force sense (FS) and maximum voluntary isometric contraction (MVIC). Participants’ MVIC levels were determined during the 45-degree knee extension task. Then, participants were asked to execute a knee JPS task with external load (EL-JPS) and with no-load (EL-JPS). To assess jumping accuracy participants were instructed to jump with their 50% of maximum jump height. Results indicated that EL-JPS error values were lower than NL-JPS. EL-JPS was correlated to jumping errors. However, the relationship between NL-JPS and jumping errors was not significant. A significant correlation was found between MVIC and FS errors. ©, Copyright © Taylor & Francis Group, LLC.