Background: The aim of the current research was the effect of 8 weeks of increasing resistance training and a period of non-training after that on the left ventricular LVEVD index of sedentary women. Method: In this semi-experimental research that was conducted in a field-laboratory manner, 32 sedentary women who were able to regularly participate in the exercise protocol were selected by simple random sampling and randomly divided into 2 groups: 1- Resistance exercise group (16 people ), 2- control group (16 people). In the present study, before the implementation of the training program, all the anthropometric characteristics, body composition and structural and functional indicators of the left ventricle of the subjects were measured and recorded in three stages under the same conditions. Variable left ventricular end-diastolic volume (LVEDV), by a cardiologist with echocardiography using M-Mode, Spectral Doppler, Color Doppler (2-D) methods and in a special echocardiography room in 3 stages (before exercise, after the end of 8 weeks The resistance training program was measured after 4 weeks of non-training after training. It was also measured before echocardiography. All training programs including 3 training days per week and every day for 90 minutes were implemented in the sports hall of Azad University, Yazd branch. This program was implemented for 8 weeks from low to high intensity, taking into account the principle of overload and increasing the intensity of training. Results: the results showed that eight weeks of increasing resistance training was significant on the left ventricular end-diastolic volume (LVEDV) of sedentary women Conclusion: Increasing resistance training reduced the positive effects of increasing resistance training on the left ventricular end-diastolic volume. پرونده مقاله

Background: Considering the need of athletes to reach normal conditions and prepare for the next activities, the methods of removing lactic acid and reducing the heart rate are very important. The need of athletes to recover and to prepare for the next activities, methods of disposal lactic acid are important. Method: The purpose of this study was to compare of active and passive recovery after one exhausting exercise (Bruce) in blood lactate and heart rate in male runners. 26 healthy elite men were selected and then randomly divided in two groups of 12 men in active and 14 men in passive group. Before exercise, lactate acid and heart rate were measured, then each runner performed Bruce test so that he became exhausted completely then immediately and after 10 minutes lactate acid and heart rate measured again and analyzed by repeated measures test (p>. /05). Results: Results show that lactate acid and heart rate increase significantly immediately after exercise (p<.05). Changes 10 minutes after active and passive recovery decrease than after exercise but still increased significantly than before exercise.Conclusion: Finding of this study showed that active recovery after an exhaustive training session causes significant پرونده مقاله

Background: Central fatigue is the most important factor in a person's inability to functionbetter, especially in short periods of time, high intensity exercises normally limit athlete performance and delay the desired result. Therefore, the aim of this study was to investigate the effect of Fluoxetine consumption (serotonin reuptake inhibitor) when reaching fatigue in elite male basketball players.Methods: In this study, 24 healthy elite basketball players with mean and standard deviation of age, weight, height and BMI were 21.5±.16 years, 43.7±76 kg, 28.3±80 cm and 16.1±81.19 kg/m2 participated purposefully and voluntarily. All the subjects completed and signed the consent form of participation in the study, then were randomly assigned to two groups of 12 people. Six hours before the exercise, one group was given 20 mg Fluoxetine capsules and the other group was given a placebo. Also, half an hour before the start of the exercise, 5 ml of blood was taken from the subjects in order to determine the level of lactate and serotonin levels, and then the subjects ran on a carometer bike with 70% maximum oxygen consumption to the head of fatigue and immediately after Bruce test, 5 ml of blood was taken again from all subjects. Data were analyzed using an independent t-test at the level of (p≤0.05)Results: The results showed that the time to achieve fatigue in the group that had taken Fluoxetine was lower than the placebo group and they reached fatigue earlier than the group that had taken the placebo.Conclusion: These results show that there are central parts of fatigue that are regulated and adjusted by serotonergic neuron activity. پرونده مقاله

Background: Children with attention deficit/hyperactivity disorder are the first victims of emotional, behavioral and educational neglect, so the treatment of these children is necessary. Therefore, this study aims to determine the effect of a course of Bray tonic exercises on improving confrontational disobedience and anxiety in children with attention deficit hyperactivity disorder. Attention was designed and implemented.Method: In this semi-experimental research, 40 female students aged 8 to 10 with coping behavior disorder were randomly divided into 2 experimental groups (20 people) and control group (20 people). The mean score of confrontational anxiety and disobedience was measured before and after 8 weeks of Bray tonic exercises, and finally the data was analyzed using descriptive and inferential statistics such as analysis of variance using version 21 of Spss software.Results: The mean and standard deviation of anxiety before performing Bray tonic exercises in the control and experimental groups were 17.3±15.80, 21.2±10.98 and after performing Bray tonic exercises in the control and experimental groups, respectively, 30±3.18. 18.4±35.39, 18.17, as well as the mean and standard deviation of oppositional disobedience before performing Bray tonic exercises in the control and experimental groups, respectively, 7.40±1.23, 8.15±745, and after performing Bray tonic exercises. In the control and experimental groups, it was 7.20±1.28, 7.20±1.95, respectively. Therefore, there is a significant difference between the amount of confrontational disobedience and anxiety of children with attention deficit hyperactivity disorder before and after a period of Bray tonic exercises (p≤/05).Conclusion: The results of this study showed that a course of Bray tonic exercises can improve confrontational disobedience and anxiety in children with attention deficit hyperactivity disorder. پرونده مقاله