ABSTRACT
Since the use of light and electronic devices is inevitable, the use of blue light filters (in various light sources, electronic devices or optical devices including intraocular lenses) has been shown to improve sleep quality, especially in later hours of the day and during night time. In this study, we examine the effect of the blue light on sleep and wakefulness rhythms and positive and negative emotions. This randomized clinical trial was conducted with 80 AJA University of Medical Sciences employees who use computers at least 2 h a day. All subjects were employees of the discharge unit of Imam Reza Hospital, which is located next to AJA University. The subjects were divided into two groups of 40 people, blue light filter software intervention and sham treatment. Pittsburgh Sleep Quality Index (PSQI), Positive and Negative Affect Schedule (PANAS), Visual Function Questionnaire (VFQ), Epworth Sleepiness Scale (ESS) and salivary melatonin and cortisol levels were assessed for both groups before and 3 months after the intervention. Data analysis was performed using IBM SPSS statistics for windows, version 21.0 (Armonk, NY: IBM Corporation). P value ≤ 0.05 was considered as statistically significant. The results showed that the Pittsburgh sleep scale after the intervention was significantly lower in the intervention group than in the control group. After the intervention, the VFQ was significantly lower in the intervention group than in the control group (P = 0.018). There was no significant difference in the Epworth Sleepiness Scale (ESS) between the two study groups after the intervention (P = 0.370). There was no significant difference in Positive and Negative Affect Schedule (PANAS) in the two study groups after the intervention (P = 0.140). After the intervention, cortisol levels were significantly higher in the intervention group than in the control group (P = 0.006). Also, the amount of cortisol increased significantly in the intervention group (P = 0.028). The amount of melatonin decreased significantly in the intervention group (P = 0.034). The sleep quality score after the intervention was significantly lower in the intervention group than in the control group. This indicates better sleep quality in the intervention group. The results also show that the level of visual fatigue in the intervention group decreased significantly. However, no significant change was detected regarding positive and negative emotions. After the intervention, cortisol levels were significantly higher in the intervention group than the control group. In addition, cortisol levels increased significantly and melatonin levels decreased significantly in the intervention group during the course of study.
Subject(s)
Melatonin , Humans , Hydrocortisone , Circadian Rhythm , Sleepiness , Sleep , Software , EmotionsABSTRACT
BACKGROUND: Screening for personality disorders through reliable instruments is of high importance for clinical and preventive purposes. Examining the psychometric properties of measures in societies with diverse cultures can improve their external validity. This research is specifically aimed to studying psychometric properties of the McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD) in a sample of Iranian men serving military service. MATERIALS AND METHODS: The Persian version of the MSI-BPD was prepared through forwarding translation, reconciliation, and back-translation. A sample of 254 soldiers was selected through the convenience sampling method in Tehran and completed a set of questionnaires, including the MSI-BPD, The Deliberate Self-harm Inventory (DSHI), Borderline Personality Scale (STB), Cognitive Flexibility Inventory (CFI), and Self-Compassion Scale (SCS) Short-Form. The construct validity of the MSI-BPD was assessed using confirmatory factor analysis and divergent and convergent validity. Internal Consistency and test-retest reliability (2 weeks'interval) were used to evaluate the reliability. Data analysis was conducted using LISREL (version 8.8) and SSPS (version 22) software. RESULTS: MSI-BPD and its subscales were found to be valid and reliable measures, with good internal consistency and good test-retest reliability among soldiers. In terms of convergent validity, MSI-BPD and subscales showed a significant positive correlation with self-report measures of DSHI and STB. MSI-BPD and subscales showed negative correlation with SCS Short-Form and CFI, thus demonstrated a good divergent validity. The results of this study also provide support for both one-factor and two-factor models of the MSI-BPD. CONCLUSION: The MSI-BPD showed good validity and reliability, making it a useful measure to Screening borderline personality disorder in the Iranian population. Screening offers a means of identifying persons for more detailed evaluation for early intervention and for research. The MSI-BPD is an efficient instrument suitable for screening purposes among soldiers.
ABSTRACT
INTRODUCTION: Diabetes is considered as one of the most common metabolic disorders and one of the biggest worldwide health problems; first-line treatment is suggested as a changing diet and physical activity by experts. The aim of the present study was the determination of the effectiveness of a training program based on a protective motivation theory on improving nutritional behaviors and physical activity in type 2 military diabetic patients. METHODS: In this controlled intervention study, 76 military diabetic individuals (2 groups with 38 individuals in each) were participated. Data gathering instrument was a researcher-made questionnaire based on structures of conservation motivation theory. The data were entered into SPSS19 software and analyzed by using paired t-test and Pearson's correlation coefficient. RESULTS: Findings showed that except in perceived sensitivity in the test and control groups, there was a significant difference between the mean scores of all the components of the Protective Motivation Theory. In the test group, there was a significant difference between the mean scores of all constructs of the Protective Motivation Theory before and after the educational intervention, while in the control group, there was a significant difference between the mean scores of fear, effectiveness of response, severity, and perceived sensitivity structures before and after educational intervention. Glycated hemoglobin (Hb-A1c) and weight of the intervention group were significantly decreased after the intervention. In addition, adherence to diet and physical activity were increased. CONCLUSION: The results of this study showed that conservation motivation theory can be used as a framework in designing educational programs to improve the diet and physical activity among diabetics.
