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Öğe Changes in serum creatine kinase, lactate dehydrogenase and aldolase activities following supramaximal exercise in athletes(1994) Oguz Karamizrak S.; Ergen E.; Ruhi Tore I.; Akgun N.While it is well known that prolonged intense exercise raises serum enzyme activities, the effects of short duration intense exercise on enzyme activity changes have not been clearly described. Three successive standard 30 s Wingate anaerobic cycle ergometer tests separated by 6-8 min rest intervals were performed by competitive male middle- and long-distance runners or cyclists (no. = 33), and matched healthy control subjects (no. = 30). Immediately before and 6 h after the tests, blood samples were taken to assess the effects of exercise on serum creatine kinase (CK), lactate dehydrogenase (LD) and aldolase (ALS) enzyme activities. Serum CK activities were found to be significantly higher in athletes than in the controls, both before and 6 hours after the test (p < 0.001), as were ALS activities (p < 0.01 before and p < 0.05 after the test), whereas LD activities were significantly higher (p < 0.05) in the athletes only after the test. Following the test, increases in LD activities (p < 0.01) were observed in athletes and rises in CK activities (p < 0.05) were seen in the controls. Significant correlations between pre- and post-exercise serum enzyme activities were established for both groups. In conclusion, following a supramaximal exercise test, increases in serum LD activities of athletes and in CK activities of controls appear to be more pronounced, and increases in serum CK, LD and ALS activities seem to depend more on the duration of exercise than on its intensity.Öğe Expiratory peak flow rate. Standard values for normal subjects from 8 to 40 years of age(1972) Akgun N.; Ozgonul H.[No abstract available]Öğe Öğe The relationship between the changes in physical fitness and in total blood volume in subjects having regular and measured training(1974) Akgun N.; Tartaroglu N.; Durusoy F.; Kocaturk E.The study was carried out on 9 male and 6 female medical students leading a regular life as an experimental group and the results have been compared statistically with those of the control group of 8 males and 7 females having similar physical characteristics and regular life. The following parameters have been measured; plasma volume, hemoglobin, hematocrit, maximal oxygen intake, basal heart rate, maximum voluntary ventilation, vital capacity, heart volume, maximal respiratory minute volume, and maximal working capacity. The measurements have been done before and after 2 mth of ergometric training period. Training consisted of 0.5 hr ergometric work daily. The results were: physical fitness as measured by maximal oxygen intake was improved significantly after training in both sexes; and total blood volume was increased significantly after training in both sexes. It is found that the increase in total blood volume was most likely the result of an increase in plasma volume. There was no significant correlation between physical fitness and total blood volume. It seems that these two changes occur independently during training.Öğe Teleroentgenologic investigations of champion turkish wrestlers(1960) Akgun N.; Ustun E.F.Cardiac transverse diameter, heart rate, and arterial blood pressure were studied in 17 champion Turkish wrestlers. The wrestlers' cardiac transverse diameters were compared with eight normal untrained Turkish people, the Ungerleider-Gubner nomogram, and other reported values. Bradycardia and low arterial blood pressure were found in wrestlers. The mean transverse diameter of wrestlers was significantly larger than that of controls, but the same as the values found in normal people by others. The mean transverse diameter of controls was slightly smaller than the predicted values. It was concluded that wrestlers' cardiac transverse diameters are at the upper limits of normal values. © 1960 Taylor & Francis Group, LLC.
