Simulated Dawn Med Students

NCT02088593 | Completed

• 1 other identifier: Dawn
• Study Type: interventional
• Target: 46
• Locations: 1 country
• Sites: 1

Brief Summary

Medical students score higher than the general population on measures of depression, anxiety, fatigue, poor sleep and sleepiness. Data suggest that disparages in circadian phase might contribute to these problems. From an internal validity standpoint, first year medical students are an ideal group to study. The majority of the students will be matched on variables such as education, age, and intelligence. However, more importantly, they have a nearly identical life style when it comes to factors such as schedule, living conditions, level of stress, and timing of stressors. The specific aim and hypothesis is:Medical students randomized to sleep hygiene counseling plus simulated dawn will report less depression, anxiety, fatigue, sleepiness, and sleep disruption (as measured by standardized questionnaires) than students randomized to just sleep hygiene counseling.

Conditions

Depression; Anxiety; Fatigue; Sleepiness; Sleep Disruption

Keywords

Medical Students

Outcome Measures

Primary Outcomes (1)

• Sleep quality

  3 months

Study Arms (2)

DAWN simulation

EXPERIMENTAL

Simulated Dawn Light box

Device: Simulated Dawn Light Box; Behavioral: Sleep Hygiene instructions

Sleep hygiene instructions read aloud

ACTIVE COMPARATOR

Standard sleep hygiene instructions were read aloud.

Behavioral: Sleep Hygiene instructions

Interventions

Simulated Dawn Light Box DEVICE

per3 model of Naturebright It was set at the participants habitual wake time, and automatically began ramping between 30 and 90 minutes prior to that time (based upon participant preference). The ramp increased in a curvilinear fashion, mimicking sunrise during the summer at 45 degrees North latitude and reached a maximum light intensity of 300lux. They were allowed to switch the lamp off during the ramp period, and sleep in on off days, but were asked to allow the light to begin its ramp.

Also known as: per3 model of Naturebright

DAWN simulation

Sleep Hygiene instructions BEHAVIORAL

Sleep Hygiene instructions read aloud

DAWN simulation; Sleep hygiene instructions read aloud

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Being a first year medical student
• Good academic standing after the first module
• Reporting attending morning lectures regularly.

You may not qualify if:

• No reported history of psychiatric illness,sleep illness, ophthalmic illness
• No current use of photosensitizing medications

Sponsors & Collaborators

• Medical University of South Carolina: lead
• University at Buffalo: collaborator

Study Sites (1)

University at Buffalo

Buffalo, New York, 14260, United States

Location

MeSH Terms

Conditions

Depression; Anxiety Disorders; Fatigue; Sleepiness

Condition Hierarchy (Ancestors)

Behavioral Symptoms; Behavior; Mental Disorders; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Gregory Sahlem, MD

  Medical University of South Carolina

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 26, 2014
• First Posted: March 17, 2014
• Study Start: July 1, 2007
• Primary Completion: January 1, 2010
• Study Completion: January 1, 2010
• Last Updated: May 24, 2023

Record last verified: 2023-05

Locations

US (1)