Maintenance of Vitamin D Level by UVB Radiation
Not Applicable
Completed
- Conditions
- Vitamin D Status
- Interventions
- Radiation: Broadband UVBOther: Control group
- Registration Number
- NCT01101243
- Lead Sponsor
- Bispebjerg Hospital
- Brief Summary
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
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.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 75
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
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Group 3 Broadband UVB Body surface area: 88 % Group 1 Broadband UVB Body surface area: 88 % Group 5 Control group Body surface area: 0 % Group 2 Broadband UVB Body surface area: 22 % Group 4 Broadband UVB Body surface area: 88 %
- Primary Outcome Measures
Name Time Method Vitamin D (nmol/l) Monthly during 4 months Vitamin D measured in a blood sample to define the relationship between frequency of UVB radiations and the Vitamin D level.
- Secondary Outcome Measures
Name Time Method Parathyroideahormone (pmol/l) 4 months To investigate whether parathyroideahormone is influenced by the UVB radiations.
Trial Locations
- Locations (1)
Bispebjerg Hospital
🇩🇰Copenhagen, NV, Denmark