Light Exposure to Treat Sleep Disruption in Older People

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Conditions studied: Sleep Initiation and Maintenance Disorders, Circadian Rhythm Sleep Disorders, Hypersomnia

In brief

The purpose of this study is to test whether shifts in the timing of the biological clock to a later hour (phase delay shifts of the human circadian system) can be produced in response to four successive evenings of light exposure, and whether that phase shift will result in greater evening alertness and greater nighttime sleep efficiency. Three different light sources will be compared: 1) standard fluorescent light; 2) blue-enriched light; 3) incandescent fluorescent light.

Key facts

Study ID

NCT00427323

Run by

National Institute on Aging (NIA)

People needed

60

Starts

2006-06-01

Expected to finish

2007-09-01

Last updated by the study team

2009-12-11

Who can join

Age: 55 and older, up to 80. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Sleep complaint

You may not qualify if…

• Sleep apnea
• Depression
• Periodic limb movements of sleep
• Restless Legs Syndrome
• History of stroke
• History of heart attack
• Uncontrolled medical condition

Where it is running

• Brigham & Women's Hospital — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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