جستجوی مقالات مرتبط با کلیدواژه « Antioxidant defense » در نشریات گروه « تربیت بدنی »

The purpose of this study was to investigate the effect of sprint interval training on hippocampal oxidative stress markers hippocampus of adult male Wistar rats. This is an experimental study in which 16 male Wistar rats were obtained, and after environmental adaptation and reaching target weight range randomly divided into two equal groups: control (CO) and sprint interval training (SIT). The SIT was performed for 8 weeks, 3 sessions per week, 4-9 repetitions of 10 seconds with 60 secs of active recovery between intervals. Forty-eight hours after the last exercise session the rats were anesthetized and the hippocampus was dissected and level of malondialdehyde (MDA) and superoxide dismutase (SOD), glutathione peroxidase (GPx), and total antioxidant capacity (TAC) were assessed in hippocampus homogenate. The independent samples T test was used for data analysis (P<0.05). There were no significant difference between the SIT and CO groups in the hippocampal GPx, TAC and MDA levels (p < 0.05). However, the activity level of SOD in the SIT group was significantly higher than the CO group (p<0.05). The present research revealed that despite its strenuous nature, SIT did not induce oxidative stress in the hippocampus and trend of changes in GPx and TAC, as well as observed significant increase in SOD activity levels suggests that it may have favorable effects on hippocampus oxidative- antioxidative status.

the aim of this study was to comparison of 12 weeks of high intensity interval training and continues training on SIRT3 and superoxide dismutase (SOD) activity in gastrocnemius muscle of aged female Wistar rats.

15 female Wistar rats (age= 18 month, weight= 270-350 g) were chosen and divided into 3 groups; high intensity interval training (HIIT), Continues training (CT), and Control. After determining rat’s VO2max, progressive HIIT and CT protocols were designed with the intensity corresponds to 85-90% VO2max and 65-70 % VO2max, respectively and training duration in HIIT was approximately half of CT. 48 hours after the last training session, rats were sacrificed and their gastrocnemius muscle samples were saved for further analysis.

This study showed a significant difference of SIRT3 between HIIT, CT, and control group (p=0.001) (Control

During high intensity sport activities, tissues like liver, kidney and intestine experience hypoxia situation due to the ischemia following physical activity that finally increases free radicals. The aim of this study was to investigate the effect of 8 weeks of endurance training on glutathione peroxidase (GPX) and Malondialdehyde (MDA) of gastrocnemius muscle, heart and liver tissues in male Wistar rats. 12 male Wistar rats (mean weight= 234.47±25.97 g, age=8 weeks) were randomly divided into two groups: control (n=6) and high intensity endurance training (n=6) after one week of familiarization. Endurance training included 8 weeks, 5 sessions a week on a rodent treadmill. The speed and duration of running were 10 m/min. and 30 min. at the first week respectively and reached 35 m/min. (equal to 80-%85 of Vo2 max) and 70 min. at the last week. The results of independent t test showed that high intensity endurance training significantly decreased GPX in heart (P=0.001) and liver (P=0.001) tissues compared with the control group. Also, MDA levels of heart (P=0.03) and liver (P=0.045) tissues in training group increased significantly compared with the control group. These findings showed that different tissues have different oxidative responses to similar training, that is to say high intensity endurance training imposes oxidative stress on heart and liver tissues more than gastrocnemius muscle.