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

NCT ID: NCT00516867

Last Updated: 2007-08-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

41 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-02-28

Study Completion Date

2006-04-30

Brief Summary

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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

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Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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UVB 0.5%

Group Type ACTIVE_COMPARATOR

UV radiation

Intervention Type RADIATION

UV radiation with 99.5% UVA and 0.5%UVB

Controls

Group Type NO_INTERVENTION

No interventions assigned to this group

UVB 1.4%

Group Type ACTIVE_COMPARATOR

UV radiation

Intervention Type RADIATION

UVB 1.4 % and UVA 98.6

Interventions

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UV radiation

UV radiation with 99.5% UVA and 0.5%UVB

Intervention Type RADIATION

UV radiation

UVB 1.4 % and UVA 98.6

Intervention Type RADIATION

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Hvidovre University Hospital

OTHER

Sponsor Role collaborator

Bispebjerg Hospital

OTHER

Sponsor Role lead

Principal Investigators

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Hans C Wulf, MD, DSc

Role: STUDY_CHAIR

Bispebjerg Hospital

Locations

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Bispebjerg Hospital

Copenhagen, , Denmark

Site Status

Countries

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Denmark

Other Identifiers

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KF 01 290815

Identifier Type: -

Identifier Source: org_study_id