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Öğe Basal metabolic rates of Turkish women during pregnancy(KARGER, 1999) Çıkrıkcı, E; Gökbel, Hakkı; Bediz, C. S.The purpose of the present study was to investigate the basal metabolic rates (BMRs) of pregnant Turkish women a nd to co mpa re them with values from other countries. Twenty-four pregnant women (aged 24.8 +/- 5.7 years) were studied longitudinally from early pregnancy through to the end of pregnancy. BMR values were measured in the 1st, 2nd and 3rd trimesters by indirect calorimetry. While the measured BMR significantly increased (279 +/- 212 kcal/day between the 1st and 3rd trimesters), no change was found when BMR was expressed per unit of body weight. BMR in the 2nd and 3rd trimesters showed a significant correlation with body weight, The BMR increase in pregnant Turkish women was close to that reported in developed countries, and higher than that reported in developing countries. Knowing the metabolic changes of the pregnant women may contribute to dietary recommendations for them.Öğe A combined method for estimating ventilatory threshold(EDIZIONI MINERVA MEDICA, 1999) Kara, M; Gökbel, Hakkı; Bediz, C. S.Background. The aims of this study were to compare two new methods (D-max and CUSUM) for determination of the ventilatory threshold and to examine the consequences of estimation by application of these methods in combination. Methods. Experimental design: a comparative design was used, Setting: the study was performed in the Exercise Physiology Laboratory in the Faculty of Medicine, Self uh University, Participants: thirty-two untrained males (20.6+/-1.2 yrs) performed an incremental exercise test on a cycle ergometer, Interventions: there is no intervention. Measures: ventilatory and gas exchange variables were measured breath-by-breath. The ventilatory thresholds were detected by conventional linear regression, CUSUM, D-max and combined CUSUM-D-max methods. Results. The ventilatory thresholds determined by D-max method gave the highest r-values compared to the criterion method. There was no statistical difference between thresholds determined by all methods or by the same method using different variables, Ventilatory thresholds could not be determined by the conventional linear regression method in three subjects but were determined in all subjects by the other three methods. Conclusions. Although all methods presented in this study can be used in the determination of ventilatory threshold, the D-max method was found to be the most valid one, When using the CUSUM method, combining it with the D-max method increases the validity of the measurement.Öğe The effects of rHuEPO administration on pulmonary functions in haemodialysis patients(WICHTIG EDITORE, 1996) Uçok, K; Gökbel, Hakkı; Yeksan, M; Bediz, C. S.; Eser, C; Türk, S; Ergene, NThe aim of this study was to investigate the effects of erythropoietin therapy on pulmonary functions in haemodialysis patients. Thirteen patients with chronic renal failure on regular haemodialysis and in need of treatment for anaemia were treated with 45-60 U/kg erythropoietin three times a week. Thirteen haemodialysis patients constituted the control group. Patients receiving erythropoietin were given pulmonary function tests prior to the treatment and after Hb levels had reached 10 g/dl. The interval between first and second pulmonary function tests was similar for both the control group and the erythropoietin group. There was no significant difference between the results of the first and the second pulmonary function tests of the control group. However, in the erythropoietin group, the diffusing capacity, maximal voluntary ventilation, forced vital capacity and peak expiratory flow rate values increased significantly. The existence of a relationship between the diffusing capacity and anaemia is well known. Rises in other parameters following erythropoietin administration might be the result of a gain in respiratory muscle strength consequent to aneamia correction.Öğe Pulmonary Function of Workers in the Aluminum Industry(WILEY, 1998) San, L. N.; Uysal, H.; Gökbel, H.; Bediz, C. S.; Sayal, A.The effects of aluminum on the pulmonary function of aluminum workers were investigated in this study. Serum aluminum levels and spirometry were measured in 55 male workers and 30 male controls. The mean serum aluminum level of workers (72.7 +/- 9.9 ng/ml) was significantly high compared to that of controls, indicating aluminum toxicity. Spirometric parameters were significantly lower in workers than in controls and correlated negatively with both exposure time and serum aluminum levels. The impairment in pulmonary function may be due to exposure time and insufficient protection.Öğe A short communication regarding the article by M. Kara et al - Determination of the heart rate deflection point by the Dmax method - Reply(EDIZIONI MINERVA MEDICA, 1997) Gökbel, Hakkı; Kara, M; Bediz, C. S.[Abstract not Available]
