جستجوی مقالات مرتبط با کلیدواژه « هورمون تستوسترون » در نشریات گروه « پزشکی »

Menopause is a natural aging process that occurs due to decreased production of testosterone. As the population ages, andropause is becoming a serious health problem. Due to the limited studies on andropause in Iran and the unfamiliarity of men with this concept, a study was conducted to investigate the knowledge and attitudes of men over 40 years old in Meybod about andropause.

This descriptive cross-sectional study was performed on 400 men over 40 years of age. Sampling was cluster sampling and data were collected through a researcher-made questionnaire, and then analyzed by analysis of variance, Pearson correlation test and regression test in SPSS software version 18.

Based on the results of the study, menchr('39')s knowledge about andropause was low and their attitude was negative and the mean score of participantschr('39') knowledge about andropause by age groups (P <0.05), education (P <0.05) and occupation (P <0.05 was significant and the mean score of their attitude towards andropause was significant in terms of age groups (P <0.05) and occupation (P <0.05) but in terms of education (P> 0.05). ) did not make sense. According to Pearson correlation coefficient, there is a statistically significant relationship between the mean score of knowledge and the score of attitude.

The knowledge of men in Meybod about andropause is low and their attitude is negative and they need more education about andropause.

Caffeine has the athletic performance-enhancing effects, but its effect on concentrations of anabolic hormones is unclear. Therefore, this research examines the short–term effect of caffeine consumption on anabolic hormones of growth (GH) and testosterone (TS) after performing resistance exercise (RE).

In this randomized double-blind, and placebo-controlled crossover study, 30 volunter men (mean age 21.72 ± 4.06, height 179.31 ± 5.08 centimeter, wight 77.31 ± 14.70 kilogram) who did resistance exercise consumed caffeine supplement (6 mg.k-1 of the body weight) and placebo (maltodextrine 6 mg.k-1 of the body weight) one hour before the RE, and the blood samples were taken before, after and 15 min after RE.

 Analysis of data showed that GH concerntration showed a significant difference between the conditions of caffeine and placebo immediately and and 15 minutes after RE (P<0.05), but no significant diference was found in TS concentration caffeine and placebo groups at any times.

In general, the present study indicated that caffeine (6 mg.k-1) leads to the significant increase in GH concentration after RE (85% of 1RM) in athletes, but, it had not any effect on the concentration of TS

The purpose of this study was to examine the effect of 8 weeks resistance training program with HMB supplementary product on changes in Growth hormone and testosterone over non athlete males. This presented research is a semi-experimental research and due to this matter 20 non athlete males participated voluntary for this research and were divided into 2 groups, experimental groups (n=10) with an average age of 75/28±39/1 years, height 83/179±30/0 centimeters, weight 23/84+58/3 kilograms and fat percentage 21/29±97/5,2: control group(n=10) with an average of 28+14/2 years, height 25/180±71/3 centimeters , weight 23/84±58/3 kg and fat percentage 21/29±97/5.both groups performed 8 weeks resistance training protocol ( 5 moves,3 times per a week, with an intensity level of 50 to 80% 1RM). The experimental group during the research took 3 gr HMB supplement daily .a drug index is used for the control group. before the exercise and 48 h after the last training session blood sample was taken from their left forearm vein while fasting. at last growth hormone and testosterone serum dosage was analyzed via a micro wells (made in U.S.A). Beside growth hormone and testosterone, fat percentage, BMI and vo2 max were analyzed before and after the experiment. The analyzed rate via T TEST showed that the usage of HMB supplement doesn’t have a significant effect on GH,TH, FAT PERCENTAGE, BMI, and vo2 max. This presented information doesn’t recommend the HMB supplement dose for increasing level of growth and testosterone serum.