NCT01048294

Blue Enriched Versus Standard Light Treatment for Seasonal Affective Disorder(SAD)

Gerandomiseerde en Gecontroleerde Studie Naar de Effecten Van Lichttoediening Met Een Hogere Kleurtemperatuur in Vergelijking Met de Standaard Lichttherapie in de Behandeling Van Winterdepressie

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 52 (actual)
• Sponsor: University Medical Center Groningen · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Not accepted

Summary

One of the most frequently investigated hypothesis of the pathophysiology underlying Seasonal Affective Disorder(SAD) or so called winterdepression is a disturbance of circadian rhythms. Since the circadian system is especially sensitive for the blue portion of the light spectrum, a new light therapy device with more blue light (blue enriched polychromatic light) was tested for its efficacy to treat SAD. In chronobiological terms this light is hypothesized to be more potent in inducing non-visual effects. In the present study fluorescent tubes that emit a high portion of short wavelength light on top of the normal wavelengths are tested for its superiority in treating SAD. This blue-enriched light (colour temperature 17000 ºK) is compared to standard light treatment (5000 º K) in SAD patients., The investigators hypothesise that blue- enriched light improve the therapeutic effects of light treatment leading to a higher response or the same response in a shorter time schedule compared to standard light treatment.

Conditions

• Seasonal Affective Disorder

Interventions

Type	Name	Description
DEVICE	Original Energy Light,	9000 lux, 30 minutes in the morning
DEVICE	Original Energy Light prototype	9000 lux 20 minutes in the morning
DEVICE	Original Energy Light prototype	9000 lux 30 minutes in the morning

Timeline

• Start date: 2005-10-01
• Primary completion: 2006-03-01
• Completion: 2006-03-01
• First posted: 2010-01-13
• Last updated: 2010-01-13

Locations

1 site across 1 country: Netherlands