circadian rhythm disorder (shift work type). Circadian rhythm sleep disorder, shift work type
Conditions
Interventions
Intervention 1: Intervention group: The intervention for participants lasts for 9 days, the first 3 days are related to getting used to the conditions of the study environment.from the fourth day, the
Sponsors
Shahroud University of Medical Sciences
Eligibility
Sex/Gender
Male
Age
18 Years to 25 Years
Inclusion criteria
Inclusion criteria: Male gender right handed Age range between 18 and 25 years Regular rhythm of sleep and wakefulness in the past month (8 to 10) hours of sleep a night
Exclusion criteria
Exclusion criteria: Having a history of psychiatric disorder Having a history of substance abuse Use of psychiatric drugs Having a general medical disorder that endangers participants health during the test Having a history of brain trauma Having a metal body in the body, including platinum, fragments or iron particles Having an irregular rhythm of sleeping and waking in the last month (8 to 10) hours of sleep at night (night shift work) Having body mass index higher than 30
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Impulsivity score in Bart's Impulsivity Questionnaire. Timepoint: Beginning of the intervention (before the start of the intervention) and end of the intervention (immediately after the end of the intervention). Method of measurement: Bart's Impulsivity Questionnaire.;Assessment of Cognitive functions. Timepoint: Beginning of the intervention (before the start of the intervention) and end of the intervention (immediately after the end of the intervention). Method of measurement: Brief Cognitive Rating Scale.;Assessment of presence or absence of mood rhythmicity. Timepoint: Four hours before the intervention and four hours after the intervention. Method of measurement: Mood Rhythm Instrument (MRhI).;Evaluation of the performance of the reward system (mesocortico limbic circuit). Timepoint: Three hours before the intervention and three hours after the intervention. Method of measurement: Functional magnetic resonance imaging.;Performance in high-risk decision test (due to reaction time). Timepoint: Three hours before the intervention and three hours after the intervention. Method of measurement: Functional magnetic resonance imaging (GO/NO GO task).;Vulnerability score for substance use and addictive behaviors test. Timepoint: Two hours before the intervention and two hours after the intervention. Method of measurement: Vulnerability to substance use and addictive behaviors test. | — |
Secondary
| Measure | Time frame |
|---|---|
| Impulsivity score in Bart's Impulsivity Questionnaire. Timepoint: Beginning of the intervention (before the start of the intervention) and end of the intervention (immediately after the end of the intervention). Method of measurement: Bart's Impulsivity Questionnaire.;Assessment of Cognitive functions. Timepoint: Beginning of the intervention (before the start of the intervention) and end of the intervention (immediately after the end of the intervention). Method of measurement: Brief Cognitive Rating Scale.;Assessment of presence or absence of mood rhythmicity. Timepoint: Four hours before the intervention and four hours after the intervention. Method of measurement: Mood Rhythm Instrument (MRhI).;Evaluation of the performance of the reward system (mesocorticolimbic circuit). Timepoint: Three hours before the intervention and three hours after the intervention. Method of measurement: Functional magnetic resonance imaging.;Performance in high-risk decision test (due to reaction time). Timepoint: Three hours before the intervention and three hours after the intervention. Method of measurement: Functional magnetic resonance imaging (GO/NO GO task).;Vulnerability score for substance use and addictive behaviors test. Timepoint: Two hours before the intervention and two hours after the intervention. Method of measurement: Vulnerability to substance use and addictive behaviors test. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public ContactMohammad Niroumand Sarvandani
Shahroud University of Medical Sciences
Outcome results
None listed