Does Sunbed Radiation With Mainly UVA Provoke Cutaneous Vitamin D Synthesis in Humans?

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Radiation: UV radiation

• Registration Number: NCT00516867
• Lead Sponsor: Bispebjerg Hospital

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?

Detailed Description

Not available

Study Timeline

• Study Start: 2006-02
• Study Completion: 2006-04
• Status Verified: 2007-08
• Study First Submitted: 2007-08-14
• Study First Submitted QC: 2007-08-15
• Last Update Submitted: 2007-08-15
• Study First Posted: 2007-08-16
• Last Update Posted: 2007-08-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 41

Inclusion Criteria

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

Exclusion Criteria

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
UVB 0.5%	UV radiation	-
UVB 1.4%	UV radiation	-

Primary Outcome Measures

Name	Time	Method
Serum concentration of 25(OH)D	18 Days

Secondary Outcome Measures

Name	Time	Method
Serum concentration of PTH	18 Days

Trial Locations

Locations (1)

Bispebjerg Hospital; 🇩🇰 Copenhagen, Denmark