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Background: Menopause is associated with changes in body composition in postmenopausal women. The aim of this study was to compare the effects of tibolone and continuous combined hormone therapy (HT) on body composition in postmenopausal women. Materials and Methods: In this randomized clinical trial, 120 menopausal women were randomly selected and divided into three groups. Of these, 40 women received 2.5 mg tibolone plus one Cal+D tablet (500 mg carbonate calcium with 200 IU vitamin D) daily, 40 women received 0.625 mg conjugated estrogen combined with 2.5 mg medroxy progesterone acetate plus one Cal+D tablet daily and the rest 40 (the control group) only received one Cal+D tablet daily. All regimes continued for nine months. Body composition was evaluated with measurements of waist to hip ratio (WHR), fat mass (FM), fat-free mass (FFM), body mass index (BMI), and weight before and after intervention. Fat mass and fat free mass were assessed by measurement of skin-fold thickness. Data were analyzed by SPSS software. Results: In the tibolone group, FFM, BMI, and weight significantly increased compared to the baseline (p<0.05). In the HT group, only weight and BMI significantly increased (p<0.05). In the control group, however, BMI, FM, and weight did not significantly increase in comparison with the other groups. Overall, tibolone group showed a more significant increase in comparison with the other groups (p<0.01) Conclusion: From these results, it can be concluded that tibolone can be used in treating menopausal changes in menopausal women as an alternative to continuous combined hormone therapy.

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Background: Primary dysmenorrhea is chronic cyclical pelvic pain associated with menstruation in absence of an identifiable pathological condition. The purpose of this study was to compare the prevalence and severity of dysmenorrhea among athletes and non-athlete girls and its relation with body composition.

Materials and Methods: In this cross sectional study 223 healthy students aging 20-30 years old from Guilan university randomly divided to two groups (72 athletes and 151 non-athletes). The athletes group engaged in regular physical activity for at least one year, three sessions a week and the non-athletes group were not engaged in any sports activity.  Data were collected by questionnaire and anthropometric measurements.

Results: The prevalence of dysmenorrhea was lower in athletes than non-athletes group (61.1% vs. 88.8%, p<0.001). A significant difference was observed in mood symptoms, physical symptoms and severity of pain between two groups (p<0.05). Also there was statistically significant relationship between body fat and physical symptoms of dysmenorrhea in both groups. However, no statistically significant relationship was observed between physical symptoms of dysmenorrhea, BMI and WHR.

Conclusion: It seems that performing regular exercise can be used as a preventing, treating or supplementary method in control of the early dysmenorrhea.

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Background: Body Mass Index (BMI) is commonly used to determine overweightness and obesity in epidemiological studies regardless of the sex and age of the subjects. Golden Standards were presented by the World Health Organization to estimate obesity by measuring body fat percentiles. The primary purpose of this study was to estimate the accuracy of the BMI by Cut-points of gold standard.

 Materials and Methods: This is a cross-sectional and descriptive study. Measuring body composition was done by Bioelectrical Impedance Analysis (BIA) method. Accuracy of the BIA method is documented in comparison with more complicated methods Diagnosis performance to estimate the accuracy of Body Mass Index was based on measuring specificity, sensitivity, percentile of the power of positive anticipation, and percentile of the power of negative anticipation to diagnose obesity, with due attention to the cut-points of world health organization gold standards and according to sex and age ranking. Data analysis was performed by T-test, Chi-Square and Roc curve. Two Roc curves were compared by Honely formule and regression analysis.

Results: According to the cut-point of gold standard, statistical findings showed that the amounts of sensitivity and specifity were 66% and 90.5% for all persons, respectively. With due attention to data analysis, the level of sensitivity was 50.2% to 73.3% in males and 28.9% to 69.7% in females. Also, with respect to age ranking, percentile of the power of negatire anticipation was reported between 26.7% to 63.6% in males and between 28.9% to 69.7% in females.

Conclusion: Body Mass Index could not accurately classify people in obesity and overweightness groups. The power of BMI for classifying obese and overweight people decreases with increasing age. Overall, comparing BMI and the cut-points of gold standard showed the medium effect of this index in classifying obese and overweight persons. The appropriate cut-point to diagnose obesity was 27.8.

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Introduction: Physical activity is one of the important lifestyle factors that can have positive or negative effects on the reproductive system, and more research is needed to reflect the effect of inactivity on fertility in order to provide safe lifestyle recommendations to help couples achieve pregnancy is required. Therefore, this study was conducted with the aim of describing and comparing the physical activity status of fertile and infertile men in Arak city in 2022.
Methods: The present study is a case-control study that was conducted on 220 fertile and infertile men (22 to 40 years old) referred to Arak University Jihad infertility centers that were selected through available sampling. Participants completed self-test questionnaires on socio-demographic characteristics, lifestyle, physical activity, and sedentary behaviors. Anthropometric characteristics and body composition were also measured. Multivariate logistic regression was used to analyze the association of infertility with physical activity level, sedentary behavior, and body composition.
Ethical Considerations: This study was approved by the Ethics Committee of the University of Arak University (Code: IR.ARAKMU.REC.1401.046).
Ethical Considerations: The present research has been registered with the code IR.ARAKU.REC.1401.015 in the Ethics Committee of Arak University.
Results: In this study, it was observed that the amount of physical activity (P=0.02) and body composition (P=0.001) in fertile men is more favorable than infertile men. In men with a low level of physical activity, the risk of infertility increases 2.97 times (odds ratio 2.97 and 95% CI: 1.03, 8.61, and P=0.04). On the other hand, in men with moderate level of physical activity, the risk of infertility decreases (odds ratio 0.27 and 95% CI: 0.08, 0.92, and P=0.03). Also, in men who sit for more than 6 hours a day, the chance of infertility increases by 3.02 times (odds ratio 3.02 and 95% CI: 1.28, 7.10, and P=0.01). An increase in body mass index increases the risk of infertility by 1.61 times in men (odds ratio 1.61 and 95% CI: 1.23 and 2.11 and P=0.001).
Conclusions: Since obesity, physical inactivity and infertility in Iranian men are increasing at the same time, so there should be more focus and seriousness on the issue of lifestyle modification and especially physical activity regarding reproductive health.