NCT00516867

Brief Summary

We would investigate in a controlled, randomized open study in the winter season: 1) If serum levels of vitamin D (25(OH)D) increase in subjects treated with sunbed with sunlamps emitting mainly UVA and only 0·5% or 1·4% UVB compared to non-sunbed treated controls 2) If yes, are the 25(OH)D serum levels then dependent on the UVB dose?

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
41

participants targeted

Target at P50-P75 for not_applicable healthy

Timeline
Completed

Started Feb 2006

Shorter than P25 for not_applicable healthy

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 1, 2006

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2006

Completed
1.4 years until next milestone

First Submitted

Initial submission to the registry

August 14, 2007

Completed
2 days until next milestone

First Posted

Study publicly available on registry

August 16, 2007

Completed
Last Updated

August 16, 2007

Status Verified

August 1, 2007

First QC Date

August 14, 2007

Last Update Submit

August 15, 2007

Conditions

Healthy

Outcome Measures

Primary Outcomes (1)

  • Serum concentration of 25(OH)D

    18 Days

Secondary Outcomes (1)

  • Serum concentration of PTH

    18 Days

Study Arms (3)

UVB 0.5%

ACTIVE COMPARATOR
Radiation: UV radiation

Controls

NO INTERVENTION

UVB 1.4%

ACTIVE COMPARATOR
Radiation: UV radiation

Interventions

UV radiationRADIATION

UV radiation with 99.5% UVA and 0.5%UVB

UVB 0.5%

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Healthy
  • Females
  • Above 50 years
  • Younger with serum concentration of 25(OH)D below 50nmol/l

You may not qualify if:

  • No sunbed use last ½ year
  • No sun holiday last ½ year
  • No intake of vitamin D above 10 microgram/day

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Bispebjerg Hospital

Copenhagen, DK-2000 NV, Denmark

Location

MeSH Terms

Interventions

Ultraviolet Rays

Intervention Hierarchy (Ancestors)

LightElectromagnetic RadiationElectromagnetic PhenomenaMagnetic PhenomenaPhysical PhenomenaOptical PhenomenaRadiationRadiation, IonizingRadiation, NonionizingSunlightWeatherAtmosphereEnvironmentEcological and Environmental PhenomenaBiological PhenomenaMeteorological ConceptsEnvironment and Public Health

Study Officials

  • Hans C Wulf, MD, DSc

    Bispebjerg Hospital

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER

Study Record Dates

First Submitted

August 14, 2007

First Posted

August 16, 2007

Study Start

February 1, 2006

Study Completion

April 1, 2006

Last Updated

August 16, 2007

Record last verified: 2007-08

Locations

DK(1)