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    Analysis of anger expression style - continuous anger and personality types of professional soccer players [Analiza stila ekspresije ljutnje - kontinuirana ljutnja i tipovi osobnosti profesionalnih nogometaša]
    (2011) Yildiz M.; Şahan H.; Tekin M.; Ulukan M.; Mehtap B.
    The purpose of this study was to analyse the anger expression styles, the continuous anger and personality types of players who play football in the professional league. The research group consisted of 133 soccer players who are playing in sports teams in the Turkish Super League: Ankara Sport Club, Gençlerbirli{eth}i Sports Club and Hacettepe Sports Club in the first league, Turk Telekom sports in the second league, and Keçiören Gücü Sports and Ankarademir Sports playing in the third league in the 2008-2009 football season. The Eysenck personality inventory was modified to Turkish by Bayar in 1983 1, having been developed by Eysenck and Eysenck in 1975 2 and the continuous anger - anger style scale (SOTO) was modified to Turkish by Özer in 1994 3. The state trait anger scale (STAS) was originally developed by Spielberger in 1983 4. All these were used on soccer players participating in the study to determine the continuous anger and anger styles in this study. In the interpretation of data, a meaningfulness of p<0.05, was applied by using regression analysis, the Kruskal Wallis Test, the one-way variance analysis (ANOVA) test and the Tukey test to find the differences among the groups. The SPSS (Statistical Package for Social Sciences) programme was used to find the accounted values and to evaluate the data. According to the results of this study, regarding the education level variable, while there was a meaningful difference between the continuous anger sub-dimension and anger control sub-dimension than continuous anger - anger expression styles, no significant difference was found among personality type sub-dimensions (psychoticism, extrovert, neurotic, false). In addition, a significant relationship was found between psychoticism, extrovert, neurotic, and lie sub-dimensions and the personality type sub-dimensions of professional players' constant anger-anger expression styles.
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    Effect of dexmedetomidine on haemodynamic responses to laryngoscopy and intubation: Perioperative haemodynamics and anaesthetic requirements
    (2006) Yildiz M.; Tavlan A.; Tuncer S.; Reisli R.; Yosunkaya A.; Otelcioglu S.
    Background: Dexmedetomidine reduces the dose requirements for opioids and anaesthetic agents. The purpose of this study was to evaluate the effect of a single pre-induction intravenous dose of dexmedetomidine 1 ?g/kg on cardiovascular response resulting from laryngoscopy and endotracheal intubation, need for anaesthetic agent and perioperative haemodynamic stability. Methods: Fifty patients scheduled for elective minor surgery were randomised into two groups (dexmedetomidine group and placebo group, n = 25 in each group). During and after drug administration, the Ramsey sedation scale was applied every 5 minutes. Fentanyl 1 ?g/kg was administered to all patients and thiopental was given until lash reflex disappeared. Anaesthesia continuation was maintained with 50%:50%, oxygen:nitrous oxide. Sevoflurane concentration was adjusted to maintain systolic blood pressure within 20% of preoperative values. After extubation, the Steward awakening score was applied at 5 and 10 minutes. Haemodynamic parameters and adverse effects were recorded every 10 minutes for 1 hour after surgery. Results: During intubation the need for thiopental and sevoflurane concentration were decreased by 39% and 92%, respectively, in the dexmedetomidine group compared with the placebo group. In all groups, blood pressure and heart rate increased after tracheal intubation; both were significantly lower in the dexmedetomidine group than in the placebo group (p < 0.05). Fentanyl requirement during the operation was 74.20 ± 10.53?g in the dexmedetomidine group and 84.00 ± 27.04?g in the placebo group (p < 0.05). At 5 minutes, the Steward scores were >6 in 56% of the dexmedetomidine group and in 4% of the placebo group (p < 0.05). At 10 minutes, sedation scores were ?4 in all patients in the dexmedetomidine group (p < 0.05). Arterial blood pressure and heart rate in the postoperative period were significantly lower in the dexmedetomidine group compared with the placebo group (p < 0.05). Conclusion: Preoperative administration of a single dose of dexmedetomidine resulted in progressive increases in sedation, blunted the haemodynamic responses during laryngoscopy, and reduced opioid and anaesthetic requirements. Furthermore, dexmedetomidine decreased blood pressure and heart rate as well as the recovery time after the operation. © 2006 Adis Data Information BV. All rights reserved.
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    The favorable effects of vitamine e added on treatment of experimental acute organic phosphorus toxicity [Deneysel akut organik fosfor toksisitesi tedavisine eklenen e vitaminin olumlu etkileri]
    (2011) Bayir A.; Yildiz M.; Kara H.; Köylü O.; Kocabaş R.; Ak A.
    Objectives: Oxidative stress by increased production of reactive oxygen species has been implicated in the toxicity of many pesticides. The tissue levels of ROS are one of the most important indicator of tissue injury. The aim of this study was to examine the effects of vitamin E treatment in acute organophosphate poisoning (AOP) on choline esterase (CE) and Malondialdehit (MDA) levels in the liver tissue and blood and to compare with antidote treatment. Methods: Twenty New Zaeland type rabbits were divided into randomly three groups as sham (n=8), pralidoxime (PAM)+atropine (n=6), and vitamin E (n=6). blood samples were taken from each test subjects to measure plasma CE, serum and erythrocyte MDA values before toxicity. 50 mg/kg 2,2-dichlorovinyl dimethyl phosphate were given to all subjects orogastrically. The PAM-atropine group were given 30 mg/kg IV bolus, then 15 mg/kg PAM and 0.05 mg/kg atropine IV every 4 hours. The vitamin E group received 250 mg/kg vitamin E single dose IM in addition to same atropine and PAM treatment. Blood samples were obtained from the all subjects in the 12th and 24th hours followed by the initiation of treatment. The liver tissue samples were obtained to evaluate in order to evaluate same parameters. The test subjects were sacrificed by high dose IV anesthesia. Results: The erythrocyte MDA of vitamin E group was significantly lower than PAM-atropine group (p=0.003). Liver tissue CE level of vitamin E group was considerably higher than PAM-atropine group (p<0.001). Liver tissue MDA of vitamin E group was significantly lower than PAMatropine group (p<0.001). Conclusions: Included in the treatment of acute AOF toxicity, vitamin E has a curative effect on both erythrocyte and liver tissue lipid peroxidation and tissue CE activity.
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    Use of chest circumference signal as an input to models of respiration–HRV interaction
    (Springer Verlag, 2007) Yildiz M.; Ider Y.Z.
    Contributions of respiration to the genesis of Heart Rate Variability are well known. Respiration not only generates the HF (High Frequency) component of the power spectrum of HRV, called respiratory sinus arrhythmia, but also contributes to the formation of the LF (Low Frequency) peak. Therefore it is necessary that respiration is also recorded during an HRV test so that LF/HF ratio, which is the most important parameter extracted from HRV for assessing sympathovagal balance, is more properly evaluated. LF components of lung volume (VL), intrathoracic pressure (PT), and abdominal pressure (PA), are more significant especially when respiration is slightly irregular, and may directly contribute to HRV LF power. Models developed to study these interactions need respiratory signal inputs. Measurements of VL, PT, and PA in a clinical setting are either not possible or induce stress in the patient and thus alter HRV. On the other hand chest and abdominal circumference signals (CT and CA respectively) are easier to acquire without inducing stress. It is shown that by appropriately scaling and offsetting CT and CA one obtains signals representative of PT and PA which then can be used as inputs to the models. VL can also be derived from PT through a linear empirical formula published elsewhere. CT, CA, and VL from 5 volunteers are recorded together with ECG. It is shown that CT is linearly related to VL, and hence to PT. The derived PT and PA signals are then applied to a Respiration-Cardiovascular System model and HRV is derived. It is observed that model derived and real HRVs are temporally well correlated. It is also shown that in the presence of increased LF power of the circumference signals HRV LF power also increases. © International Federation for Medical and Biological Engineering 2007.