Maintenance of Vitamin D Level by UVB Radiation

Bispebjerg Hospital

Status: Completed

Conditions: Vitamin D Status

Treatments: Radiation: Broadband UVB; Other: Control group

Study type: Interventional

Funder types: Other

Identifiers

NCT01101243

H-C-2008-072

Details and patient eligibility

About

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

Full 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.

Enrollment: 75 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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75 participants in 5 patient groups

Group 1

Active Comparator group

Description:

Body surface area: 88 %

Treatment:

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Group 2

Active Comparator group

Description:

Body surface area: 22 %

Treatment:

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Group 3

Active Comparator group

Description:

Body surface area: 88 %

Treatment:

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Group 4

Active Comparator group

Description:

Body surface area: 88 %

Treatment:

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Radiation: Broadband UVB

Group 5

No Intervention group

Description:

Body surface area: 0 %

Treatment:

Other: Control group