ABSTRACT
Intense exercise increases heart susceptibility to the disorder in this physiological factor.The purpose of this study is to study the effect of sprint interval training on plasma levels of apelin, blood pressure and heart rate in elite female runner. Plasma levels of apelin, Heart rate [HR] and blood pressure [BP], analyzed before, after and 24 hours after exercise. 15 elite female runner, whom were playing in Shiraz track and field league, selected for this study. They all were homogenized according to any kind of disease. Rast exercise made plasma level of Apelin decrease after exercise compared with plasma level before exercise and this decrease was significant [p=0.001]. Also, plasma level of apelin increased significantly 24 hrs after finishing exercise [p=0.001], but there were no significant differences before exercise [p=0.375]. Systolic blood pressure and heart rate increased immediately after exercise and decreased significantly after 24 hrs [p=0.001]. However, significant difference was not observed in diastolic pressure before and after exercise [p=0.338]. The finding of this study shows that sprint interval training decreases plasma levels of apelin, so we can say that apelin and blood pressure must be in balance in natural position. With knowing the role of apelin, changes in this peptide during exercise can be an alarm to cardiovascular risk factor, during or after exercise in elite athletes
ABSTRACT
Physical activities can lead to the release of free radicals through oxidation pressure, and can also result in the decrease of free radicals in the body by producing antioxidation enzymes. However the key question is which type of exercise? The aim of this study was to analyze the effects of two kinds of physical activities, Eccentric and Concentric on some oxidation and anti-oxidation factors in the plasma of women involved in physical education. Twenty-four female student volunteers were randomly divided into 3 groups, the control group, the eccentric exercise group, and the concentric exercise group. Blood samples were taken from the test group twice [an hour before and again one hour after the training] in order to analyze the non-enzyme oxidation [GSH], oxidation pressure index [MDA] and absolute anti-oxidation capacity [ATC]. Data was analysed using SPSS, version 13, through the analysis of variance test with 95% confidence [p<0.05]. Results showed that the amount of TAC, MDA, and GSH plasma after eccentric and concentric physical activities showed meaningful increases compared to before the activities. Also the amounts of GSH, MDA plasma after the eccentric and concentric activities had significant increase in comparison to the control group. It seems that severe eccentric and concentric physical activities are important stimulants causing considerable changes in the body's oxidation system and these activities can improve anti-oxidation capacity
ABSTRACT
The aim of this study was to assess antioxidant status in elite alpine ski racers during six weeks intensive training. 5 years] who underwent 6 weeks +/- Subjects included 12 male alpine ski racers [20 of intensive training. For red blood cells glutathione content, plasma uric acid and total anti oxidant determination, blood samples were collected before and 1.4 mg/dL, +/- just after training. Plasma Uric acid concentration [6.5 1.7 mg/dL] and total antioxidant capacity after six weeks intensive training +/- 8.3 0.3 mM]. Red blood +/- 0.2 mM, 2.7 +/- showed statistically significant increases [2.1 0.7 and +/- cell glutathione content also increased after period of training [5.4 0.9 nmol/mg Hb]. Intensive alpine ski training after six weeks 6.1 can increase total antioxidant capacity of plasma probably by increasing through uric acid and RBC glutathione content