Maintenance of Vitamin D Level by UVB Radiation

NCT ID: NCT01101243

Last Updated: 2010-04-09

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

75 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-10-31

Study Completion Date

2010-04-30

Brief Summary

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The purpose of the study is to determine the frequency of UVB radiations necessary to maintain the Vitamin D level during winter time.

Detailed Description

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The work is addressing vitamin D production after UVB exposure and explore how much UVB radiation which is necessary to maintain a sufficient vitamin D level during the winter period in Denmark. 4 different UVB exposure times and 2 different UVB doses to 2 different body surface areas.

Conditions

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Vitamin D Status

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Group 1

Body surface area: 88 %

Group Type ACTIVE_COMPARATOR

Broadband UVB

Intervention Type RADIATION

UVB dose: 1 SED every week

Group 2

Body surface area: 22 %

Group Type ACTIVE_COMPARATOR

Broadband UVB

Intervention Type RADIATION

UVB dose: 4 SED every second week

Group 3

Body surface area: 88 %

Group Type ACTIVE_COMPARATOR

Broadband UVB

Intervention Type RADIATION

UVB dose: 1 SED every second week

Group 4

Body surface area: 88 %

Group Type ACTIVE_COMPARATOR

Broadband UVB

Intervention Type RADIATION

UVB dose: 1 SED every month

Group 5

Body surface area: 0 %

Group Type NO_INTERVENTION

Control group

Intervention Type OTHER

No intervention

Interventions

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Broadband UVB

UVB dose: 1 SED every week

Intervention Type RADIATION

Broadband UVB

UVB dose: 4 SED every second week

Intervention Type RADIATION

Broadband UVB

UVB dose: 1 SED every second week

Intervention Type RADIATION

Broadband UVB

UVB dose: 1 SED every month

Intervention Type RADIATION

Control group

No intervention

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 18-65 years
* Healthy

Exclusion Criteria

* Sun bed use
* Holiday or business travel south of 45 degrees latitude during trial
* Illness
* Drug addiction
* Pregnancy
* Lactating
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The Danish Medical Research Council

OTHER

Sponsor Role collaborator

Bispebjerg Hospital

OTHER

Sponsor Role lead

Responsible Party

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Bispebjerg Hospital, Department of Dermatology

Principal Investigators

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Hans Christian Wulf, Professor

Role: STUDY_CHAIR

Bispebjerg Hospital, Department of Dermatology

Locations

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Bispebjerg Hospital

Copenhagen, NV, Denmark

Site Status

Countries

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Denmark

Other Identifiers

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H-C-2008-072

Identifier Type: -

Identifier Source: org_study_id

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