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| Name | Class |
|---|---|
| The Danish Medical Research Council | OTHER |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group 1 | Active Comparator | Body surface area: 88 % |
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| Group 2 | Active Comparator | Body surface area: 22 % |
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| Group 3 | Active Comparator | Body surface area: 88 % |
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| Group 4 | Active Comparator | Body surface area: 88 % |
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| Group 5 | No Intervention | Body surface area: 0 % |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Broadband UVB | Radiation | UVB dose: 1 SED every week |
| |
| Broadband UVB |
| Measure | Description | Time Frame |
|---|---|---|
| Vitamin D (nmol/l) | Vitamin D measured in a blood sample to define the relationship between frequency of UVB radiations and the Vitamin D level. | Monthly during 4 months |
| Measure | Description | Time Frame |
|---|---|---|
| Parathyroideahormone (pmol/l) | To investigate whether parathyroideahormone is influenced by the UVB radiations. | 4 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Hans Christian Wulf, Professor | Bispebjerg Hospital, Department of Dermatology | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Bispebjerg Hospital | Copenhagen | NV | 2400 | Denmark |
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| ID | Term |
|---|---|
| D035061 | Control Groups |
| ID | Term |
|---|---|
| D015340 | Epidemiologic Research Design |
| D004812 | Epidemiologic Methods |
| D008919 | Investigative Techniques |
| D012107 | Research Design |
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| Radiation |
UVB dose: 4 SED every second week |
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| Broadband UVB | Radiation | UVB dose: 1 SED every second week |
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| Broadband UVB | Radiation | UVB dose: 1 SED every month |
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| Control group | Other | No intervention |
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| D008722 | Methods |