Khadijeh Molaei, Sanaz Mirzayan Shanjani, Ali Gorzi, Yaser Kazemzadeh, Abdolali Banaeifar,
Volume 0, Issue 0 (11-2019)
Abstract
Testosterone enanthate increases muscle growth and athletic performance but is associated with oxidative stress and tissue damage. This study aimed to investigate the effect of propolis on oxidative stress markers induced by testosterone enanthate in the kidney tissue of female Wistar rats undergoing resistance training. Twenty-two 8-week-old female rats, weighing 208.22±14.17 g, were randomly divided into three groups: 1) resistance training + placebo (n=6), 2) resistance training + testosterone enanthate (n=8), 3) resistance training + testosterone enanthate + propolis (n=8). The rats underwent an 8-week resistance training protocol involving ladder climbing (five days per week). Testosterone enanthate was administered at a dose of 20 mg/kg body weight per injection, and propolis was administered at a dose of 400 mg/kg body weight by gavage (each three times a week). The levels of superoxide dismutase (SOD), glutathione peroxidase (GPX), and malondialdehyde (MDA) in kidney tissue were measured by spectrophotometry. One-way ANOVA and Bonferroni post hoc tests were used for statistical analysis. The results showed that testosterone enanthate significantly decreased GPX and SOD levels and increased MDA levels. Propolis consumption led to a relative reduction in these oxidative stress markers, demonstrating its potential antioxidant effects.
Ali Molaei , Sedigheh Hosseinpour Delavar, Ghahramani Mehran, Reza Jabbari, Mohammad Jalilvand,
Volume 18, Issue 20 (11-2020)
Abstract
The present study was aimed to determine the effect of cold-water immersion and (TDCS) during the recovery period on blood lactate changes in and subsequent performance of professional male swimmers. For this purpose, 20 male participated in this study in two days with an interval of 48 hours. The two-hundred meter breaststroke was performed every day and then the subjects participated in one of the protocols, an anodic stimulation (with intensity of 2 mA)or the artificially exposed to anodic stimulation on the first day, and on the second day they were experienced the cold water immersion (12° C).The subjects' blood lactate was measured. Finally, in order to measure the effect of the investigated methods on their performance, the 200-meter swim was repeated. To analyze the data dependent t-test and analysis of covariance, LSD follow-up, analysis of variance with repeated measures, were used. The results of this study indicated that swimming performance significantly improved only in the TDCS group, with a reduction in the record time (P = 0.001). Blood lactate showed a greater decrease in the cold water immersion group (P = 0.001)
