Sleep duration and its relationship with school performance in Iranian adolescents

Background. Inadequate or poor sleep quality is common problems in adolescent that affect on their learning, memory and school performance. The present study aimed to determine the association between sleep hours and academic performance in young adults. Methods. This cross-sectional study was designed as a descriptive-analytic study. Samples of adolescents of 14-18 years old in Qazvin city were enrolled. The Pediatric sleep questionnaire and BEARS questionnaire used for all students to screen comprehensively major sleeps problems in them. Chi-square test, t-test, analysis of variance (ANOVA), and correlation were performed to determine the relationship between the data (P < 0.001). Results. Between 653 adolescents, 40% were male and 60% were female. Sleep duration, sleep onset delay, sleep insufficient, rate of oversleeping and academic performance had a direct relationship with gender (P < 0.001). The sleep duration, rate of oversleeping and academic performance were significantly higher in boys, sleep onset delay and sleep insufficient was significantly higher in girls. Time of falling sleep at weekend nights and weekday nights have positively correlation with age (P < 0.001). Also, a significant relationship between students’ sleep hours with academic performance was shown (P < 0.001). Conclusions. The overall result was that sleep duration, sleep onset delay, sleep insufficient and rate of oversleeping of students in this study had a significant influence on academic performance. Students without difficulty in falling asleep had good academic performance in compared to students with difficulty in falling asleep

Efficacy and hypnotic effects of melatonin in shift-work nurses: double-blind, placebo-controlled crossover trial

<p>Abstract</p> <p>Background</p> <p>Night work is associated with disturbed sleep and wakefulness, particularly in relation to the night shift. Circadian rhythm sleep disorders are characterized by complaints of insomnia and excessive daytime sleepiness that are primarily due to alterations in the internal circadian timing system or a misalignment between the timing of sleep and the 24-h social and physical environment.</p> <p>Methods</p> <p>We evaluated the effect of oral intake of 5 mg melatonin taken 30 minutes before night time sleep on insomnia parameters as well as subjective sleep onset latency, number of awakenings, and duration of sleep. A double-blind, randomized, placebo-controlled crossover study with periods of 1 night and washouts of 4 days comparing melatonin with placebo tablets was conducted. We tried to improve night-time sleep during recovery from night work. Participants were 86 shift-worker nurses aged 24 to 46 years. Each participant completed a questionnaire immediately after awakening.</p> <p>Results</p> <p>Sleep onset latency was significantly reduced while subjects were taking melatonin as compared with both placebo and baseline. There was no evidence that melatonin altered total sleep time (as compared with baseline total sleep time). No adverse effects of melatonin were noted during the treatment period.</p> <p>Conclusion</p> <p>Melatonin may be an effective treatment for shift workers with difficulty falling asleep.</p

Association of Evening Chronotype with Poor Control of Type 2 Diabetes: Roles of Sleep Duration and Insomnia Level

Background: Evening chronotype is usually associated with insomnia and short sleep duration. Objectives: To investigate the independent association of chronotype with diabetes control. Methods: In this cross-sectional study, 140 patients with type 2 diabetes were studied. The insomnia score was examined by a 7-item questionnaire. Also, chronotype was assessed by a 19-item questionnaire, and using the questionnaire, the patients were divided into three groups of morning, intermediate, and evening. This questionnaire has been developed for evaluating the preference for performing mental and physical activities at a special time of day. The Multivariate hierarchical analysis was applied for investigating the independent association of chronotype and glycated hemoglobin (HbA1c). Results: The fasting blood glucose and HbA1c levels were significantly different across all the three chronotype groups such that it had the highest value in the evening group and the lowest value in the morning group (FBS = 164.5 ± 34.1 mg/dL and HbA1c = 8.7% ± 1.7, in the evening group, and FBS = 132.7 ± 23.1 mg/dL and HbA1c = 6.9% ± 0.4 in the morning group, P < 0.001). The morning group had longer sleep duration and less insomnia than other groups. Results of the hierarchical regression analysis showed that the chronotype explained 28.4% of the variance of HbA1c. Results of the final model demonstrated that the chronotype had a relationship with HbA1c, independent of body mass index (BMI), time of going to bed, and insomnia score. Conclusions: Evening chronotype is associated with poorer control of diabetes, independent of BMI and sleep variables

Occupational Difference in Association of Poor Sleep Quality and Metabolic Syndrome: Differences between Workers and Employees

Background. Regarding insufficient data about interaction of job in association of sleep quality with metabolic syndrome (MS), this study has been designed to evaluate this association in workers and employees. Methods. This cross-sectional study was conducted on 448 municipal staff (employee group: N = 295; worker group: N = 153) referring for periodic examinations. The relationship between sleep quality and MS and their relevant components was investigated in both groups. Results. In the worker group, poor sleep quality was independently associated with the risk of MS by 3.04 times (P < 0:01). Among the components of metabolic syndrome, hypertriglyceridemia was associated with a greater number of sleep disorder components. There was no association between metabolic syndrome and sleep quality in the employee group. Conclusion. Poor sleep quality exerts different effects on metabolic complications in employees and workers

Prevalence of Anxiety and Depression in Diabetic Patients: A Comparative Study

Background: Living with diabetes and managing it can have substantial emotional burden on individuals. These changes might affect individuals’ lives in terms of stress and depression. The purpose of this study was to determine the prevalence of stress and depression among diabetic women who referred to endocrine clinic of Qazvin in 2014. Methods: For this purpose, 250 patients (125 individuals suffering from diabetes and 125 individuals as a control group) participated in this study. All individuals completed the beck depression inventory and the cattell anxiety inventory. In addition to these, demographic and clinical records were collected from their medical records and were analyzed by appropriate statistical methods. Results: In terms of the Maximum of mild anxiety there were 52 diabetic individuals (41.6%) versus 69 individuals of the control group (55.2%); in terms of Moderate-severe anxiety there were 73 cases (58.4%) versus 56 patients (44.8%) (P value = 0.031). In studying the Maximum of mild depression, there were 43 patients (34.4%) versus 92 (73.6%); in terms of Moderate-severe depression, there were 82 patients (65.6%) versus 33 (26.4%) (P value=0.001). Ona closer examination among age, type of diabetes, duration of diabetes, and insulin injections; only the duration of having diabetes was significantly associated with depression as one of the mental health variables. Conclusions: This study showed that anxiety and depression are significantly more common among diabetic patients in comparison to the control group in the city of Qazvin; therefore, it is necessary to develop primary care by a system based on the reaction, so that an effective treatment for mental health would take place and, ultimately, the impact of these interventions should be studied. Keywords: Mental Health, Anxiety, Depression, Diabete

Comparing respiratory symptoms and spirometry disorders among healthy people and workers of indoor swimming pools: A case–control study

BACKGROUND: The water disinfection of swimming pools through chlorination method causes unwanted changes such as chlorine‑containing byproducts within the air, which might affect the swimming pool workers’ respiratory health. The present study is aimed to determine the frequency of respiratory symptoms and spirometry abnormalities among the workers of indoor swimming pools (instructors and lifeguards). MATERIALS AND METHODS: The present case–control study was conducted on forty individuals working in indoor swimming pools and forty others working at chlorine‑exposure‑free jobs as the control group. A questionnaire, including demographic information, smoking information, respiratory symptoms, and years of employment in the swimming pool, was completed for every participant. All the personnel, as well as the participants in the control group, underwent pulmonary examinations and spirometry tests. Then, the obtained data were analyzed using the SPSS 16 software as well as the statistical tests, including t‑test, Chi‑square test, correlation coeffcient, and regression analysis. RESULTS: The mean age of the participants in the case and control groups was 32.3 and 32.5 years, respectively. Both the case and control groups consisted of 18 males (45%) and 22 females (55%). Among the respiratory symptoms, lacrimation, rhinorrhea, sneeze, throat irritation, and chest tightness were signifcantly higher in the case group than that of the control group (15%, 80%, 35%, 57.5% and 72.5% vs. 0%, 40%, 12.5%, 2.5% and 27.5%, respectively). The pulmonary examinations indicated a statistically signifcant difference between the two groups in terms of the prevalence of wheeze and rhonchi (P = 0.014 and 0.006, respectively). Moreover, showing a statistically signifcant difference, the forced vital capacity (FVC) and forced expiratory volume in 1 s/FVC indicators were lower in the case group than the control group (P = 0.04 and 0.016). CONCLUSION: Regarding the fndings, there was a direct relationship between working in indoor swimming pools and the prevalence of respiratory symptoms and pulmonary dysfunction. Keywords: Chlorine compounds, respiratory symptoms, spirometry, swimming pool

Umor očiju korisnika terminala za videoprikaz i njegov odnos s poremećajima spavanja

Visual display terminal (VDT) work has become a major part of operation in majority of workplace. This study aimed to eye fatigue in video display terminal users and its relation to sleep disorders. This cross-sectional study was done on 209 computer users who work more than one year in this field. All participants completed a questionnaire about their age, sex, BMI, years of experience, and hours of daily computer use. A standardized visual fatigue questionnaire was used for detection presence and severity of eye strain. Sleep quality was used to assess Pittsburg Sleep Quality Questionnaire (PSQI) , and the Epworth Sleepiness Questionnaire (ESS) to assess daytime sleepiness in participants. Insomnia was assessed by Insomnia Severity Index (ISI). The most common eye symptoms including eye fatigue (65.5%), eyelid heaviness sensation (69.4%), eye irritation (67.2%), dry eye (67.8%), blurred vision (68.5%), and tearing (68.1%) were significantly higher in participants who were working more than 8 hours with DVT in day. There was a significant correlation between scores of eye fatigue and insomnia severity (Rho=0.32, P<0.05). According to results, the prevalence of eye symptoms particularly eyelid heaviness sensation and blurred vision was high. However, eye fatigue was more affected insomnia severity in VDT users. Therefore, it is needed to protect computer users from the adverse effects of VDT. Implementing proper ergonomic programs to the workplace are important for achievement to good physical and mental health among VDT users.Rad terminala za vizualni prikaz (VDT) postao je glavni dio pogona na većini radnih mjesta. Ova studija presjeka provedena je na 209 korisnika računala koji rade više od jedne godine u ovom području. Svi sudionici ispunili su upitnik o svojoj dobi, spolu, indeksu tjelesne mase, godinama iskustva i satima svakodnevnog korištenja računala. Standardizirani upitnik korišten je kako bi se detektirala prisutnost i ozbiljnost naprezanja oka. Upitnik sadrži 15 pitanja o problemima s očima. Nesanica je ocijenjena indeksom ozbiljnosti nesanice. Najčešći očni simptomi uključujući umor očiju (65,5 %), osjećaj težine kapaka (69,4 %), iritacija oka (67,2 %), suho oko (67,8 %), zamagljen vid (68,5 %) i suzenje oka (68,1 %) bili su značajno viši u sudionika koji su radili više od osam sati s VDT-om na dan. Postojala je značajna korelacija između rezultata umora očiju i ozbiljnosti nesanice (Rho=0,32, P<0,05). Prema ovim rezultatima, prevalencija očnih simptoma bila je visoka i povezana s ozbiljnošću nesanice u naših VDT korisnika. Dakle, potrebno je zaštititi korisnike računala od štetnih VDT učinaka. Implementacija ispravnih ergonomskih programa na radnom mjestu važna je kako bi se postiglo dobro fizičko i mentalno zdravlje među VDT korisnicima

Sleep duration and its relationship with school performance in Iranian adolescents

Background. Inadequate or poor sleep quality is common problems in adolescent that affect on their learning, memory and school performance. The present study aimed to determine the association between sleep hours and academic performance in young adults. Methods. This cross-sectional study was designed as a descriptive-analytic study. Samples of adolescents of 14-18 years old in Qazvin city were enrolled. The Pediatric sleep questionnaire and BEARS questionnaire used for all students to screen comprehensively major sleeps problems in them. Chi-square test, t-test, analysis of variance (ANOVA), and correlation were performed to determine the relationship between the data (P < 0.001). Results. Between 653 adolescents, 40% were male and 60% were female. Sleep duration, sleep onset delay, sleep insufficient, rate of oversleeping and academic performance had a direct relationship with gender (P < 0.001). The sleep duration, rate of oversleeping and academic performance were significantly higher in boys, sleep onset delay and sleep insufficient was significantly higher in girls. Time of falling sleep at weekend nights and weekday nights have positively correlation with age (P < 0.001). Also, a significant relationship between students’ sleep hours with academic performance was shown (P < 0.001). Conclusions. The overall result was that sleep duration, sleep onset delay, sleep insufficient and rate of oversleeping of students in this study had a significant influence on academic performance. Students without difficulty in falling asleep had good academic performance in compared to students with difficulty in falling asleep