مجله دانشگاه علوم پزشکی اراک
سال بیست و چهارم شماره 6 (پیاپی 154، بهمن و اسفند 1400)

Despite progressive improvement in medical therapy and standard care, Exercisebased rehabilitation programs have been shown to to have beneficial cardiovascular effects in patients with myocardial infarction through a multifactorial effect. This review study aimed to evaluate exercise-based cardiac rehabilitation strategies in patients with myocardial infarction with special focus on high intensity interval training, as a growing field of research was conducted.

This is a systematic review study on articles published, without limitation Year, by searching in reputable databases such as PabMed, Science Direct, Google Scholar, Scopus, Springer. Also in the process of searching for articles on the keywords microRNAs (miRNA) and myocardial infarction "," cardiac rehabilitation and myocardial infarction "," cardiac rehabilitation and high-intensity interval training  (HIIT) ", high-intensity interval training (HIIT) and Myocardial infarction was used.

All Ethical principles in writing this article have been observed  according to the instructions of the National Ethics Committee and the COPE regulations.

High-intensity interval training (HIIT) is a safe and effective exercise strategy to improve cardiac function in MI, and to prevent abnormal changes in mass, size, geometry, and cardiac function after MI, and Applies significant changes in molecular targets and cell pathway.

Therefore, HIIT targets myocardial necroptosis due to oxidative stress, protects the heart against adverse left ventricular regeneration after MI, and can be considered an integral part of post-MI cardiac rehabilitation programs.

Swallowing disorder is a common and constant problem in people with Down Syndrome. In experimental method electromyography can be used to evaluate Mastication . The aim of this study was to evaluate the electromyography of the masseter and temporal muscles during Mastication in 2 to 12 years old children with Down syndrome in Arak.

This is a descriptive-analytical and case-control study, that conducted with the purpose of electromyographic study of masseter and temporal muscles during Mastication  on 15 children from available 2 to 12 years old Down Syndrome and 15 children that were matched according the method of person-to-person matching in terms of age and gender with samples with Down syndrome.

 In this study, conscious consent was obtained from all parents and no physical harm was inflicted on individuals.

About the comparison of the mean of amplitude (intensity) of electrical signal of muscle between two groups except right temporal muscle during Mastication  and about the mean of the mean frequency when Mastication  except for left temporal muscle, in other cases the difference was significant. In the case of comparing the median frequency of the electrical signal of the muscle in most muscles the difference was not significant.

 Mean amplitude (intensity) and frequency of the mean electrical signal of the muscle when chewing in most muscles was different between the two groups with Down syndrome and normal, but the differences in mean median frequency in most muscles were insignificant.

Evaluating variability can help to investigate the process underlying motor coordination problems. The current study aimed to measure motor coordination and its variability in children with Developmental Coordination Disorder (DCD). Moreover, the symmetry of motor coordination variability in these children and the relation between motor skills and variability were explored.

After evaluating motor skills in children, aged 7-10 years using Movement Assessment Battery for Children-2 (MABC-2), 15 children with DCD and 20 non-DCD children performed a bilateral coordination task. Using motion capture system, motor coordination and variability were recorded and calculated by computing continuous relative phase and its standard deviation, respectively.

The study with an ethical code of IR.UT.SPORT.REC.1396030 was approved by Ethics Committee of Faculty of Physical Education and Sport Sciences of University of Tehran.

Children with DCD showed significantly higher variability, while there was no significant difference between the groups in performing the coordination task. Moreover, the variability of motor coordination was found asymmetrical in children with DCD. Finally, more variability was shown to be accompanied with lower score in motor skills of the participants.

The current study shows the necessity of employing assessments related to underlying process of movement coordination such as variability, which can help to provide more comprehensive understanding of motor patterns of children with DCD and the strategies that they adopt to execute and produce movement.

Infertility is defined as inability to become pregnant with regular sexual intercourse for more than one year without using preventive methods. Infertility has negative effects on the quality of life of infertile couples. this thesis was done with the purpose of investigating the effecte of infertility counseling to improve the quality of life among infertile couples

This randomized clinical trial was carried out on sixty infertile couples with primary infertility in2017. Samples were allocated to an intervention (30 couples) and a control group (30 couples) by simple randomization. Even days of the first week, the intervention group and in the odd days, control group samples were selected, and the opposite was done in the following week. The intervention group received infertility counseling for six forty-five-minute sessions twice a week. However, control group received routine care. FertiQoL questionnaire was completed before and after intervention. For data analysis SPSS 19 software and Paired T-Test statistical tests , Mann-Whitney and Chi-Square Test, were used.

 Ethical code is IR.KMU.REC.1395.678  in Kerman University of Medical Sciences

Comparison of the differences between the mean of quality of life in the intervention and control groups before counseling and after counseling indicated  that infertility counseling increased Meaningful quality of life in the intervention group (p <0.0001) 

The results indicated infertility counseling can improve the quality of life among infertile couples. Therefore, it can lead to more satisfaction and cooperation in infertility treatment.

 Rotator cuff injuries are one of the most common causes of shoulder pain.There are different therapeutic approaches in this disease. The evidence of the positive effect of exercise therapy in this pathology is inconclusive. This study aimed to investigate the effect of a complete exercise protocol on improvement of the patients with rotator cuff injuries.

The patients with shoulder pain received the 12-week exercise protocol in 4 phases if they had confirmed rotator cuff injuries in clinical examination and shoulder MRI. Pain was measured by visual analog scale (VAS) and function was measured by two questionnaires; disabilities of the arm, shoulder and hand (DASH) and western Ontario rotator cuff index (WORC). Range of shoulder joint motion (ROM) was measured in five directions by goniometry. All of the outcomes were evaluated before intervention and in 6, 12, 24 weeks after starting the intervention.

 This study was registered in Iranian Registry of Clinical Trials (IRCT20100718004409N13). A written consent was taken from All participants before the study. 

In this study Twenty-four patients with rotator cuff tendinopathy and tear were analyzed finally in terms of effectiveness of exercise therapy. The average of their age was 51.7 years old. 14 patients (53.8%) with Supraspinatus tendinopathy, 6 patients (23%) with Supraspinatus tear, 3 patients (12.5%) with Supraspinatus plus biceps tendinopathy, and one patient (4.16%) with Subscapularis plus Biceps tendinopathy were assessed. The pain score (Visual Analog Scale) decreased at all fallow-ups specially after 24 weeks (3±0.1) versus before intervention (8±0.1) (P value < 0.001). Shoulder range of motions by goniometer and also the patients function based on WORC and DASH Questionnaires were improved after 24 weeks versus before intervention that was significant statistically and clinically (P value < 0.001). 

A 12- week exercise protocol including strengthening, stretching, PNF and dynamic stabilizer exercises was effective on pain reduction and improvement of function and shoulder joint range of motion improvement in the patients with shoulder rotator cuff tendinopathy and partial tear. The improvement of the variables lasted 6 months.

The most concern about children with head and face trauma is the effects of the trauma and the treatment on their growth considering the possibility that the teeth in different stages of evolution that are adjacent to the fracture line, have different prognosis in growth and deformity. The present study examines the situation of the teeth around fracture lines in order to check the effects of the trauma on the mentioned teeth.

 Complete information of 28 under 12 years old patients with jaw fracture that were admitted in the Bahonar hospital from 2010 until 2016, was extracted from files and Teeth adjacent to fracture line were clinically evaluated. Panoramic graphs that were taken instantly after the surgery and in the next 6 to 24 months period were inspected. The information examined in the panoramic graphs contained the level of internal and external erosion pathological lesion, and growth rate of teeth adjacent to the fracture line.

 This article was ethically approved by ethical committee of Kerman University of Medical Sciences (ethical code: IR.KMU.REC.1396.1398).

60/7 percent of the fractures were occurred in the lower jaw which in 67/9 percent of the times were treated by internal fixation and 10/7 were treated by Open Fracture Reduction. 89/3 percent of cases were free of pathological lesion. In 78/6 percent of cases change in color and in 71/4 percent of cases dental necrosis was not observed. 82/1 percent of the teeth had reached full growth. 

Most of the teeth adjacent to the fracture line had reached full growth and lacked pathological, color change, root deformation and loose teeth problems and there was no Difference in Open Fracture Reduction and internal fixation.

 and Aim Acinetobacter baumannii causes various nosocomial infections and has a high antibiotic resistance. Probiotics can produce metabolites with antimicrobial properties. This study aims to evaluate the antimicrobial ability of probiotics against nosocomial pathogens by inhibiting the ompA gene expression effective in biofilm formation in Acinetobacter baumannii.

 The antimicrobial properties of probiotics against nosocomial pathogens were evaluated phenotypically. The polymerase chain reaction (PCR) technique was used to identify the ompA gene in Acinetobacter baumannii. After treatment with Bacillus licheniformis supernatant, the ompA gene expression was compared before and after treatment with real-time PCR technique.

 This study was approved by the ethics committee of Islamic Azad University, Qom branch (Code: IR.IAU.QOM.REC.1398.004).

Among the study probiotics, Bacillus licheniformis supernatant had the best antimicrobial properties against nosocomial isolates of Acinetobacter baumannii A52, Acinetobacter baumannii ATCC19606, Kelebsiella pneumonia ATCC70063, and Pseudomonas aeruginosa PAO1. Bacillus licheniformis supernatant also significantly reduced the biofilm formation and ompA gene expression in Acinetobacter baumannii.

 Bacillus licheniformis can produce substances with antimicrobial and antibiofilm properties. It can be used for controlling the causative agents of nosocomial infections.

Different implant angulation, which is unavoidable in clinical situations, can affect the accuracy of impression. The aim of this study was to investigate the effect of fixture position on the accuracy of connecting impression coping to implants with internal hex.

A gypsum model with 4 implants with internal hex connection was prepared. The implants were installed in different mesiodistal angles of 0, 15, 25 and 35 degrees to the longitudinal axis in the gypsum model. To simulate the gums, a gingival mask was injected around the implants to a height of 2 mm. After a training session for senior dental students on how to close the impression coping, forty students were asked to close the impression copings on four implants. The correctness of the impression coping was evaluated by an expert prosthodontist. Data were statistically analyzed using Cochran Q test. Significance level was considered 0.05.

 this article is approved by ethics committee of Arak University of Medical Sciences.

The correct performance of students in connecting the impression coping to the implant at angles of 0, 15, 25 and 35 degrees was equal to 85%, 72%, 52%, 35%, respectively. With the exception of 0 and 15 degree groups, a statistically significant difference was observed between different study groups.

The fixture position has a significant effect on the accuracy of connecting impression coping to the implants with the internal hex and by increasing the implant angulation, the accurate connection the impression coping to the implant decreases.

A common infection in complete or partial denture wearers is denture stomatitis. One of the most important factors in the adhesion of Candida albicans is the surface and chemical properties of the denture base materials. The aim of this study was to investigate the surface roughness and adhesion of Candida albicans to two different types of acrylic materials.

In this experimental study, 16 samples were prepared from each of Vertex and Ivoclar acrylic resin. The surface roughness of the samples was measured by a profilometer. The samples were then placed in a cell suspension of Candida albicans. After incubation and staining with acridine orange, the yeast cells attached to the acrylic samples were counted using a fluorescent microscope. Data were statistically analyzed by T-test.

 This article is approved by the ethics committee of Arak University of Medical Sciences with the ethics code: IR.ARAKMU.REC.1398.301.

There was no statistically significant difference in the mean of surface roughness between the two study groups (P = 0.311). However, Candida albicans colonization in ivoclar acrylic was significantly lower than vertex acrylic. (P = 0.000).

Differences in surface topography and physical and chemical properties of Vertex and Ivoclar acrylic resin affect the adhesion of Candida albicans.

Physical activity has multiple health benefits, yet its association with female fertility remains unclear. Considering the critical effects of lifestyle on reproductive health, this study aimed to compare the physical activity and body composition of fertile and infertile women in Arak during 2021.

This study is a case-control study that was performed on 200 fertile and infertile women (20 to 40 years old) referred to the infertility center in Arak who was selected through the convenience sampling. Participants completed self-administered questionnaires on sociodemographic and lifestyle characteristics, physical activity and sedentary behavior. Anthropometric characteristics and body composition were also measured. Multivariable logistic regression was used to analyze the association of fertility with physical activity level, sedentary behavior and body composition.

The level of physical activity (P=0.001) and body mass index (P=0.03) in infertile women were lower and higher compared to fertile women, respectively. In women with moderate level of physical activity (odds ratio 4.42 and 95% confidence interval: 1.60, 12.99 and P=0.004) the chance of infertility decreases. Women who spend more than 300 minutes a day sedentary are 2.07 times more likely to have fertility problems than women who are physically active (odds ratio 2.07 and 95% confidence interval: 1.36, 3.14 and P=0.001).

This study shows that low physical activity, sedentary lifestyle and obesity are independent risk factors associated with infertility, so to prevent and even treat infertility, more attention should be paid to lifestyle behaviors in women.