Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 1 7 Saeed Mohammadi Department of Clinical Psychology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mahboobeh Maleki Department of Clinical Psychology, School of Psychology and Educational Sciences, Allameh Tabataba'i University, Tehran, Iran Mojtaba Tashkeh Department of Clinical Psychology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran Aliakbar Foroughi Department of Clinical Psychology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran Golfam Goodarzi Department of Clinical Psychology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran 2020 01 22 2020 04 20 Background and Objective: Anxiety disorders are usually accompanied with sleep disorders. Since limited studies have focused on the effectiveness of mindfulness-based cognitive therapy (MBCT) on anxiety-related problems such as sleep disorders, the current research was conducted to investigate the effectiveness of this intervention on sleep problems. Materials and Methods: This study was a clinical trial with control and treatment groups. The sample consisted of 24 university students diagnosed with social anxiety disorder (SAD). Social Interaction Anxiety Scale (SIAS) and Pitts-burgh Sleep Quality Index (PSQI) were used to assess the dependent variables. There were measurements during pre-test, post-test, and follow-up stages. Results: The treatment could significantly improve the anxiety and sleeping problems in patients with social anxiety. Assessing the aspects of sleep quality showed that the intervention could improve the subjective aspects, latency, dis-turbance, and daily dysfunctions of sleep effectively; however, there was no significant effect on the duration of sleep, taking sleep medications, or sleep efficiency. Conclusion: Mindfulness treatment could be used for improving sleep quality in patients with social anxiety. This treatment could also improve the aspects of sleep quality which are related to sleep threshold. https://jss.tums.ac.ir/index.php/jss/article/view/161

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 35 38 Hamed Amirifard Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran Arezu Najafi Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran Ania Rahimi-Golkhandan Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran Mahsa Shojaie Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Irant 2020 08 24 2020 09 30 Background and Objective: Obstructive sleep apnea (OSA) is a common sleep breathing disorder and a comorbid condition in patients with stroke. The prevalence of sleep disorders as a stroke consequence is high. Being independent of vascular risk factors, OSA is associated with increased risk of ischemic stroke. Here, we report a patient with OSA and stroke. Case Report: This case report presents a patient with a history of stroke and hemiparesis who underwent polysomnog-raphy (PSG) for evaluating OSA because of snoring, witnessed apnea, and excessive daytime sleepiness (EDS). Then the subject underwent continuous positive airway pressure (CPAP) titration for treating OSA. In first night of PSG, there was a repetitive cyclic pattern of sleep and arousals. After CPAP titration study and with CPAP pressure of 15 cmH2o, OSA and rhythmic changes of electroencephalography (EEG) were resolved. Conclusion: OSA as a risk factor for stroke can be associated with PSG cyclic wake-sleep pattern in these patients, and this pattern can be resolved by CPAP therapy. https://jss.tums.ac.ir/index.php/jss/article/view/172

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 165 165 Soroush Maazinezhad Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran Leeba Rezaie Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran Behnam Khaledipaveh Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran 2020 04 29 2020 06 22 The circadian rhythm of sleep (CRS) in humans, as an automatic biological clock, regulates the stages of sleep and wakefulness during 24 hours. However, this is not the only function of this cycle. Research shows that the CRS can play an important role in the process of energy metabolism in the body. There are also hypotheses that it affects diseases such as obesity and diabetes. Disruption of this natural rhythm can lead to metabolic imbalances in the human body and increases the risk of disorders in blood glucose regulation,blood lipids, cardiovascular system, and immune system (1, 2). https://jss.tums.ac.ir/index.php/jss/article/view/165

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 8 12 Ata Pourabbasi Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran Manzar Amirkhani Department of Counseling, School of Educational Sciences, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran Sarah Nouriyengejeh Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran 2019 04 20 2019 10 30 Background and Objective: Sleep is one of the important factors in the quality of brain function. In particular, the function of the person, learning, memory, concentration, and the potential of the individual are closely related to sleep. With regard to age and physiological changes, the average sleep time among adolescents is low. In this study, the effect of a daily nap on the promotion of academic performance of high school adolescents in Tehran, Iran, has been assessed. Materials and Methods: In this research, 56 high school students from one of Tehran's schools with an average age of 15.3 years were volunteered. Students went to the school hall after finishing classes in the morning at 12:10, and it was 50 minutes when they were considered for their sleep. Students informed researchers with a questionnaire on the educa-tional activities outside the school. Results: The participants showed to have an average of 2059.50 minutes after-school activity during the 2 weeks preced-ing the intervention, which reached 2388.11 minutes after the implementation of the in-school sleep program. This time was significantly higher than after-school activity time before intervention. Conclusion: According to the results of this study, there is a significant positive correlation between daytime napping and the capacity of after-school activity in adolescents. More investigation about installing in-school sleep programs for improving educational performance in adolescents is recommended. https://jss.tums.ac.ir/index.php/jss/article/view/128

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 40 41 Shahram Samadi Department of Anesthesiology and Intensive Care, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran Seyed Mohammad Mireskandari Department of Anesthesiology and Intensive Care, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran 2020 05 05 2020 07 18 1I read with great interest the article titled ‘Tracing the relationships between sleep disturb-ances and symptoms of irritable bowel syndrome’ by Moradian Shahrbabaki et al. The authors con-ducted an interesting cross-sectional study about the correlation between irritable bowel syndrome (IBS) and sleep quality which may also apply to other sleep features. https://jss.tums.ac.ir/index.php/jss/article/view/166

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 13 19 Lahya Afshari Saleh Department of Occupational Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Amir Rezaei Ardani Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Ehsan Rafeemanesh Department of Occupational Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Pegah Khearadmand Department of Occupational Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 2019 09 29 2020 03 11 Background and Objective: Chronotypes vary in different people, and the daily function outside of the framework of this rhythm can affect the quality of work. This study aimed to investigate the association between sleep disorders and chronotypes among the shift and day work nurses. Materials and Methods: This cross-sectional study was performed among nurses in two teaching hospitals in Mash-had, Iran, during 2016-2017. A total of 180 randomly-selected nurses were divided into shift work and day work groups. Participants completed demographic information form, Circadian Type Inventory (CTI), Insomnia Severity Index (ISI), Epworth Sleepiness Scale (ESS), Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI). Results: A total of 180 female nurses (90 participants in each group) with a mean age of 35.62 ± 4.07 years were stud-ied. The prevalence of rigid circadian rhythm in the day work group (93.3%) was significantly (P = 0.004) higher than shift work group (78.9%). However, the groups did not show any significant difference regarding the languid/vigorous (LV) index of the CTI (P = 0.080). There was a significant difference in the mean score of CTI between individuals with rigid and flexible circadian rhythms in the shift work group (P = 0.021). Conclusion: In the present study, although there was no association between circadian type and sleep problems includ-ing insomnia and daytime sleepiness in shift work nurses, we observed the capability of coping with working in the rotating shifts in nurses with flexible circadian rhythms.       https://jss.tums.ac.ir/index.php/jss/article/view/150

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 20 27 Seyed Valiollah Mousavi Department of Psychology, School of Literature and Human Sciences, University of Guilan, Rasht, Iran Elham Montazar Department of Psychology, School of Literature and Human Sciences, University of Guilan, Rasht, Iran Sajjad Rezaei Department of Psychology, School of Literature and Human Sciences, University of Guilan, Rasht, Iran Shima Poorabolghasem Hosseini Department of Psychology, School of Literature and Human Sciences, University of Guilan, Rasht, Iran 2019 09 08 2020 01 12 Background and Objective: Physiological process of sleep is considered as one of the influential factors of human’s health and mental functions, especially in the elderly. This research aimed at studying the association between sleep quality and the cognitive functions in the elderly population. Materials and Methods: A total of 200 elderly people (65 years and older) who were the members of retirees associa-tion in Mashhad, Iran, participated in this cross-sectional study. The participants were asked to answer the questionnaire of Pittsburgh Sleep Quality Index (PSQI) and Montreal Cognitive Assessment (MoCA) test. Correlation between the total scores of PSQI and MoCA was evaluated by Pearson correlation coefficient. In order to predict the cognitive func-tion based on different aspects of PSQI, multiple regression analysis by hierarchical method was used after removing confounding variables. Results: A significant association was found between PSQI and MoCA (P < 0.001, r = -0.55) suggesting that the com-ponents of use of sleeping medication (P < 0.001, r = -0.47), sleep disorders (P < 0.001, r = -0.37), sleep latency (P < 0.001, r = -0.34), subjective sleep quality (P < 0.001, r = -0.32), sleep duration (P < 0.001, r = -0.27), sleep effi-ciency (P < 0.001, r = -0.26), and daytime dysfunction (P < 0.001, r = -0.15) had significant negative correlation with cognitive function, and the four components of subjective sleep quality (P = 0.010, β = -0.15), sleep latency (P = 0.040, β = -0.13), sleep disorders (P = 0.010, β = -0.26), and use of sleeping medication (P = 0.010, β = -0.26) played a role in prediction of cognitive function in regression analysis. Conclusion: Poor sleep quality, sleep latency, insomnia, sleep breathing disorder, and use of sleeping medication play a determining role in cognitive function of the elderly. Thus, taking care of the sleep health is necessary for the elderly. https://jss.tums.ac.ir/index.php/jss/article/view/147

Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 5 1 2020 09 30 28 34 Nasim Tabrizi Department of Neurology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Athena Sharifi Razavi Department of Neurology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Mitra Alizadeh Department of Neurology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran 2019 05 22 2019 07 20 Background and Objective: Sleep disorder and fatigue are common among health care workers (HCWs) and negative-ly affect their quality of life and caregiving to the patients. Early diagnosis and rapid modification of causative factors might prevent the potential disastrous results of these problems on personal and population health. This study aimed to evaluate theranian Population: Causes and Responses 46 54 EN Amir Ali Mazandarani Department of Psychology, School of Psychology, Tarbiat Modares University, Tehran, Iran Maria E. Aguilar-Vafaie Department of Psychology, School of Psychology, Tarbiat Modares University, Tehran, Iran Maryam Esmaeilinasab Department of Psychology, School of Psychology, Tarbiat Modares University, Tehran, Iran Hojjatollah Farahani Department of Psychology, School of Psychology, Azad University of Tehran, Tehran, Iran Janet M. Y. Cheung Centre D'étude des Troubles du Sommeil, Université Laval, Québec, Canada