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Öğe The Effect of Glycerol Supplements on Aerobic and Anaerobic Performance of Athletes and Sedentary Subjects(ACAD PHYSICAL EDUCATION-KATOWICE, 2012) Patlar, Suleyman; Yalcin, Hasan; Boyali, EkremThe purpose of this study was to evaluate the effect of glycerol supplementation on aerobic and anaerobic exercise performance in sedentary subjects and athletes. The glycerol supplement treatments were as follows: 40 volunteers were selected and divided into two groups, sedentary and exercise groups. These two groups were further subdivided into two groups. The first group, the placebo (S), only consumed water; the second group (GS) consumed glycerol followed by water. Neither of these groups did any exercise for 20 days. The third and fourth groups consisted of the exercise group subjects; they were required to perform a 20-m shuttle run test every day for 20 days. The third group's subjects, the placebo (E), only consumed water. The last group (GE) consumed glycerol followed by water. The Astrand Cycle Ergometer Test (ACET) was performed, and the Cosmed K4b(2) portable gas analysis system was used to determine the aerobic capacity, while the Wingate Anaerobic Power Test (WAPT) was performed to determine the level of anaerobic power. The 20 Meter Shuttle Run Test (20MSRT) was performed after glycerol supplementation throughout the 20 days, and the exercise periods and distances were recorded. The glycerol supplement was found to have an increasing effect on aerobic and anaerobic performance in GS, E and GE. A similar effect was found for the covered distances and time in the same groups. However, an adverse effect was found on body weight.Öğe Effect of Vitamin A Supplementation on IFN-gamma, TNF-alpha, IL-2, and IL-6 Levels in Elite Taekwondo Players(KAMLA-RAJ ENTERPRISES, 2016) Boyali, EkremThis study aims to investigate the effects of vitamin A supplementation on cytokine release in 10 male elite taekwondo players. The subjects who were supplemented with 100 mg of vitamin A in daily tablet form for 4 weeks were exercised to exhaustion twice, before and after the supplementation. In the course of the four week study period, blood samples were collected from the subjects four times in exhaustion and at rest, before and after supplementation. The blood samples were analyzed for IFN gamma, TNF-alpha, IL-2, and IL-6 levels. Vitamin A supplementation resulted in a significant increase in serum IL-2 levels (p<0.05). However, vitamin A supplementation led to the inhibition of serum TNF-a levels, in comparison to pre-supplementation (exhaustion and resting) values (p<0.05). The results of the study indicate that vitamin A supplementation might cause changes in the release of cytokines independent of exercise.Öğe The Effect of Vitamin A Supplementation on Various Elements in Elite Taekwondo Players(HUMANA PRESS INC, 2011) Patlar, Suleyman; Boyali, Ekrem; Baltaci, Abdulkerim Kasim; Mogulkoc, RasimThe present study aims to examine the effects of both physical activity and vitamin A supplementation on trace element metabolism in individuals engaged in taekwondo. The study registered seven healthy male national taekwondo players whose mean age was 21.86 +/- 0.34 years and mean weight was 64.86 +/- 2.72 kg. The subjects were supplemented with oral administration of 100 mg vitamin A (retinol) for 6 weeks, and concurrently, they were subjected to taekwondo training 5 days a week. Before starting the vitamin A supplementation, blood samples were taken from the subjects twice, once at rest and once after exhaustion. Similarly, at the end of the 6-week vitamin A supplementation, two blood samples were taken from the subjects, once at rest and once after exhaustion, in order to determine (by atomic emission) and compare serum cobalt, molybdenum, calcium, cadmium, chromium, copper, manganese, sodium, nickel, phosphorus, sulfur, iron, boron, and zinc (mg/L) levels. Values of boron and nickel dropped significantly after 6-week vitamin A supplementation (p < 0.001). Reduced levels of boron and nickel we obtained in the present study are believed to result from the antioxidant effect of long-term vitamin A supplementation.Öğe Elements in Sera of Elite Taekwondo Athletes: Effects of Vitamin E Supplementation(HUMANA PRESS INC, 2011) Patlar, Suleyman; Boyali, Ekrem; Baltaci, Abdulkerim Kasim; Mogulkoc, Rasim; Gunay, MehmetMany researchers have emphasized the relation between nutrition and development and sustaining performance. Two methods are commonly employed to identify the interaction between physical activity and nutrition. The first consists of administering food with a variety of contents to people engaged in physical activity and observing their performance responses, and the other is concerned with determining the effects of physical activity on nutrition. Therefore, it can be said that there has been a growing interest in the explorations into the relation between exercise and vitamins, minerals, and elements. The present study reports the effects of 6 weeks administration of 300 mg/day vitamin E on the distribution of serum elements in elite taekwondo athletes. Seven male athletes, mean ages 22.1 +/- 0.5 years weighing on average 66.4 +/- 2.4 kg were included in the study. The athletes had been practicing taekwondo for 10-12 years. Resting blood samples were collected in duplicate before and after supplementation for determination of serum levels of cobalt, boron, cadmium, chromium, nickel, manganese, sulfur, copper, iron, zinc, phosphorus, sodium, potassium, and calcium. Supplementation resulted in significant increases of all elements relative to values before supplementation (p < 0.001), with the exception of boron and sulfur, which remained without change. The results of the present study demonstrate that vitamin E supplementation crucially influences the element and mineral metabolism in elite athletes.
