Explorative investigation towards the effectivity of a special lighting solution in influencing 25(OH)D serum levels
- Conditions
- VIT D insufficiency and general wellbeing by bringing the benefits of natural daylight inside (i.e. ultra small dose UV-B for VIT D)VIT D insufficiencyfatigue and sleep
- Registration Number
- NL-OMON49392
- Lead Sponsor
- Signify research (previously Philips Research)
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- Not specified
- Target Recruitment
- 28
* Age over 18 years old
* Fitzpatrick skin type II or III
* Living in/around Eindhoven
* Desk presence (at the home office) of at least 2,5 days per week during the 8
weeks study
* Medically fit to work the hours as contractually agreed
* Finding it no problem to have blood drawn (at Diagnostiek Voor U) three times
over a period of 8 weeks
* Current pregnancy, breast feeding or a desire to become pregnant
* Having children at home aged 10 years or younger
* Having malignant skin conditions in the past or currently
* Photosensitive medical conditions or photo-sensitising drugs
* Users of medicines and/or cremes mentioning in the prescription as side
effect extra sensitivity to the sun / interaction with sun exposure
* Planned use of sun beds, or sunbed use during the past 4 weeks
* Currently taking or planning to take oral vitamin D3 supplements or have been
taking D3 supplements during the past 4 weeks.
* High vitamin D levels at the start of the study (>375 nmol/L) which need
medical attention [41]
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method <p>The main study parameter is the difference in serum 25(OH)D serum levels. </p><br>
- Secondary Outcome Measures
Name Time Method <p>Secondary study parameters include self reported indicators of sleep timing,<br /><br>sleep quality and general levels of fatigue.</p><br>