Introduction: The purpose of this research was to investigate the effect of a period of resistance training and melatonin consumption on sex hormone levels, pain intensity, and sleep quality in girls with primary dysmenorrhea.
Methods: For this purpose, 60 girls with moderate primary dysmenorrhea disorder (score 4-7) were randomly placed in 4 groups: resistance training + melatonin, resistance training + placebo, melatonin supplement group, and control group.  Pain intensity, and sleep quality were assessed by the McGill questionnaire, and the Pittsburgh questionnaire respectively.  10 mg of melatonin was taken daily in two 5 mg capsules and the placebo group received the same amount of carbohydrates in the same capsule.  Weight training, three days a week for eight weeks. This circuit exercise training was in 9 stations and with a maximum of 10-12 repetitions at 30-65% of a maximum repetition in each station.  Each set and repetition was separated by 2-3 minutes and 90 seconds of rest, respectively. The blood sample was taken in the morning, fasting and 5 cc from the brachial vein from the left hand while sitting in the sitting position, and was taken by special kits. Data were analyzed by ANOVA with repeated measures and Bonferroni post hoc test at level P<0.05. All experimental procedures were approved by the Ethics committee of the Sport Sciences Research Institute of Iran (Code: ID IR.IAU.NEYSHABUR.REC.1401.008), Clinical Trial (Code: ID IRCT20230703058653N1) from the Iran Clinical Registration Center and were conducted under the Declaration of Helsinki.
Results: A significant increase in Estrogen (P<0.001) and progesterone (P<0.001) levels in the exercise + supplement group compared to all groups, and in the exercise + placebo group and the supplement group compared to the placebo group was reported. Also, The decrease in Pain intensity (P<0.001) and sleep quality (A decrease in the sleep score means an increase in the sleep quality in the output of the questionnaire) (P<0.001) in the supplement group compared to all groups and in the exercise + placebo group (P<0.05) and the exercise + supplement group compared to the placebo group showed a significant difference.
Conclusions: It seems that synergy of exercise and melatonin has affected the sex hormones level. Also, the melatonin probably helped to improve the sleep quality and pain intensity of the subjects through the adjustment of sex hormones following dysmenorrhea. Also, exercise probably has an effect on the pain intensity and sleep quality through the release of beta-endorphins and the effects of exercise on the menstrual cycle, although the finding are ambiguous.

Introduction: Generalized anxiety disorder can be described as a debilitating disorder characterized by negative evaluation by others, internal shame, negative self-concept, as well as high levels of anxiety and avoidance in specific social and functional situations. The purpose of this study was to investigate the effective of hypnotherapy in promotion subjective well-being and sleep quality in people with generalized anxiety disorder.
Methods: This was a quasi-experimental study with pretest-posttest and a control group design and conducted on 40 persons who had generalized anxiety disorder in Rasht, Iran in 2023 and were randomly divided into two experimental and control groups (20 persons in each group). The hypnotherapy was conducted during 6 sessions in the experimental group, while the control group did not receive any treatment. The data were collected through the subjective well-being and sleep quality Inventory. Multivariate analysis of covariance was used to analyze the data. This study was approved by the Research Ethics Committee of Payame Noor University (Code: IR.PNU.REC.1402.070).
Results: The results indicated that hypnotherapy was effective on subjective well-being (F= 33.38, P=0.001) and sleep quality (F= 5.10, P=0.03) in people with generalized anxiety disorder; this method also increased their subjective well-being and sleep quality.
Conclusions: The based on the results of the present study, hypnotherapy is effective in promotion subjective well-being and sleep quality in people with generalized anxiety disorder. It suggests that these method are used along with other psychological and pharmaceutical therapies for people with generalized anxiety disorder as a clinical intervention. 

Introduction: Helicobacter pylori is the most common bacterial infection in the world. Infection with this bacterium occurs during the first 5 years of life. The present study was conducted with the aim of investigating the frequency of Helicobacter pylori infection in children and the types of histopathological changes related to it in endoscopic gastric biopsy samples of children.
Methods: In this cross-sectional-descriptive study, the prevalence of Helicobacter pylori and histopathological findings of 169 children with it were examined in the gastric endoscopic biopsy samples that were sent to the pathology department of Shahid Motahari Hospital in Urmia during March 2019 to March 2022. This study was approved by Research Ethics committee of Urmia University of Medical Science, Urmia, Iran (code: IR.UMSU.REC.1400.227).
Results: Out of 571 examined patients, 169 children (29.5%) were infected with Helicobacter pylori, the most common histopathological lesion was chronic gastritis. 40.3% of patients had active chronic inflammation as a result of gastric biopsy. No significant relationship was found between Helicobacter pylori and children's gender (P=0.29), but a significant relationship was observed between Helicobacter pylori results and children's age (P=0.04). A significant relationship was also observed between Helicobacter pylori infection and the severity of chronic gastritis (P=0.0001).
Conclusions: Considering that the inflammatory histopathological changes of the stomach are seen in all children with Helicobacter pylori infection and in more than 40% of cases this inflammation is of an active type, it is necessary to pay special attention to the early diagnosis and treatment of this infection in children.

Introduction: Diabetes is a chronic and progressive metabolic disorder that causes heart tissue damage and changes in its protein levels. The purpose of this study was to investigate the effect of an incremental training period on MMP-2 and MEF2C protein in cardiac muscle tissue of diabetic Wistar rats.
Methods: In this experimental study, 40 male Wistar rats (age 10 weeks and average weight 245 ± 9.5 grams) were randomly divided into 4 groups of 10: diabetes-control (DC), diabetes-exercise (DT), healthy-exercise (HT) and healthy-control (HC). Intraperitoneal injection of streptozotocin (45 mg/kg) was used to cause diabetes. The training protocol was implemented for 6 weeks. 24 hours after the last training session, heart tissue was extracted. Western blot method was used to evaluate MMP-2 and MEF2C protein expression. Data analysis was done using one-way analysis of variance test.
Results: The results showed that diabetes causes a significant increase in MMP-2 protein expression levels and a significant decrease in MEF2C in the DC group compared to the HC group (P<0.05). although a period of increased training leads to a significant decrease in MMP-2 protein expression levels and a significant increase in MEF2C in the DT group compared to the DC group (P<0.05).
Conclusions: The findings of this research show that increasing aerobic exercise moderates the effects caused by diabetes in the expression of these two proteins, which seems to be a protective effect against cardiomyopathy changes caused by diabetes. 

Introduction: Seizure due to fever is the most prevalent neurological condition in children aged 6 to 60 months. A child's seizure can cause significant distress for parents, particularly the mother. Anxiety control and the well-being of the mother are crucial elements in managing child seizures. 
Methods: In this clinical trial, 70 mothers with children experiencing febrile convulsions were divided into two groups: an experimental group and a control group. The division was done using an available sampling method. The mothers in the experimental group received an intervention based on Orem's self-care model, while the mothers in the control group received the usual care. Mothers' anxiety was assessed one day after the child's hospitalization and again three weeks later using the Spielberger questionnaire. The data was analyzed using descriptive statistics, Chi-square test, Fisher's test, and analysis of covariance in SPSS software version 25.
Results: The study showed that after one day of hospitalization, the anxiety score of mothers in the test group was 101.68, compared to 106.25 in the control group. Three weeks later, the test group's anxiety score decreased to 68.97, while the control group's score was 96.34. Importantly, the decrease in the test group was statistically significant compared to the control group (P = 0.000).
Conclusions: Engaging in self-care activities results in a decrease in maternal anxiety. Hence, it is recommended to employ this approach when caring for children who are hospitalized.

Introduction: One of the biggest environmental challenges of the 21st century is the phenomenon of climate change and global warming, which can cause numerous health problems. One significant health issue associated with climate change is the increase in the prevalence of heat stress, particularly in occupational encounters in hot outdoor environments. So this study aimed to predict and model temperature and humidity indices in the coming decades in a dry climate.
Methods: This study obtained daily atmospheric parameters, including minimum temperature, maximum temperature, and relative humidity of Kerman station, representing a dry climate, for a period of 30 years (1965 to 2005) from the meteorological organization. Modeling of these parameters and calculation of the Temperature and Humidity Index (THI) were performed using the atmospheric general circulation model HadGEM2-ES and the CORDEX dynamic microscaler model. Three different radiative forcing scenarios, including optimistic (RCP 2.6), intermediate (RCP 4.5), and pessimistic (RCP 8.5), were considered for the coming decades (three 30-year periods from 2011 to 2099). The Ethics Committe of Iran University of Medical Sciences (IUMS) approved the present study (Code: IR.IUMS.REC.1400.020).
Results: The results of the study showed an increasing trend for minimum and maximum temperature parameters in all three time periods using the three scenarios considered. Moreover, the increase in temperature in the decades of 2099-2071 was more pronounced compared to the previous decades. The results also demonstrated an increasing trend in the THI index based on all three scenarios. The average results obtained using these scenarios showed an increase of 2.11, 2.53, and 3.3 degrees Celsius, respectively, in this index until the end of the last century compared to the base decades.
Conclusions: Overall, the increase in temperature and the investigated THI index in the studied station, based on all three scenarios, will lead to changes in thermal comfort. Higher levels of thermal discomfort will not only occur in hot months and seasons but also in other seasons. Therefore, proper planning should be implemented to address the adverse effects of climate change on people's health.

Introduction: The dentist's level of knowledge and abilities is one of the determining factors in the correct selection and application of dental cements. This study aimed to investigate the level of knowledge, attitude, and practice of general dentists and specialists about the application of different dental cements.
Methods: This descriptive-analytical study was cross-sectional one which conducted on 150 specialist and general dentists in governmental and private centers in Kurdistan province (2019) who performed fixed prosthetic treatments, was done through census and available sampling. The data collection tool was a questionnaire. To analyze data, T-test and ANOVA tests were used in SPSS-22 software. A significance level was considered less than 0.05. Ethical considerations: This study was conducted after the approval of the protocol in the research ethics committee and receiving the ethical code number IR.MUK.REC.1398.302 and according to the Declaration of Helsinki.
Results: The overall average score of dentists' knowledge was 6.5, which was close to and higher than the average scores and had a significant relationship with the grade and place of employment (P<0.05). The overall average score of attitude was 3.4, which was almost equal to the average scores. There was a significant relationship between grade and gender with attitude score (P<0.05). The overall average score of the dentists' practice was 5, which was higher than the average scores, and the practice score had a significant relationship with gender, place of employment, and grade (P<0.05).
Conclusions: The average score of knowledge, attitude, and practice of dentists was average, and in general, the scores of specialists were higher than general dentists. Women had a higher attitude and practice score. People working in the private sector had a higher knowledge score. To increase the knowledge, attitude, and practice of general dentists, there is a need to hold training courses.