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IRCT20180415039304N1 IRCT 2018-05-11 Shiraz University of Medical Sciences Effects of color temperature of the light emitted by computer screens on cognitive performance, alertness and sleep quality among Emergency Control Room operators Effects of color temperature of the light emitted by computer screens on cognitive performance, alertness and sleep quality among Emergency Control Room operators 2018-04-20 anticipated 35 Complete https://irct.ir/trial/30570 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Prevention. N/A cognitive performance. Intervention group: f.lux was installed on the operators ’computer screens. In order to use a one-way intervention, the software was installed during the opposite working shift. Adjusting the monitor’s color temperature using F.lux began at 22:00, so that 6500 K color temperature fall to3800 K and change of the light short wavelength towards a long wavelength was observed since 22:00. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information
public negar alighanbari
ally zahra street Fatah Almbyn School of Public Health Nutrition
shiraz Iran (Islamic Republic of) 7153675541 +98 71372510019 alighanbari@sums.ac.ir Shiraz University of Medical Sciences scientific Negar Alighanbari
School of Public Health and Nutrition, Razi s.t, Shiraz, Iran.
Shiraz Iran (Islamic Republic of) 7153675541 +98 71372510019 alighanbari@sums.ac.ir Shiraz University of Medical Sciences Iran (Islamic Republic of) having more than 2 years of work experience , less than 45 years of age (due to the effect of aging on cognitive performance) being one of the night working operators of the Emergency Control Room who have been performing similar computer work for more than 4 hours a day 20 years 45 years Female R41 Other symptoms and signs involving cognitive functions and awareness Other Intervention group: f.lux was installed on the operators ’computer screens. In order to use a one-way intervention, the software was installed during the opposite working shift. Adjusting the monitor’s color temperature using F.lux began at 22:00, so that 6500 K color temperature fall to3800 K and change of the light short wavelength towards a long wavelength was observed since 22:00 Cognitive performance. Timepoint: before and after intervention. Method of measurement: cognitive performance software. Sleep quality score. Timepoint: before and after intervention. Method of measurement: Pittsburgh Sleep Quality Index. Shiraz University of Medical Sciences Approved 2017-06-11 Ethics committee of Shiraz University of Medical Sciences Central building of Shiraz University of Medical Sciences Zand St., Shiraz, Iran shiraz Fars Iran (Islamic Republic of)