Explorative investigation towards the effectivity of a special lighting solution in influencing 25(OH)D serum levels

Withdrawn

• 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 insufficiency; fatigue and sleep

• Registration Number: NL-OMON49492
• Lead Sponsor: Signify research (previously Philips Research)

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Last Update Posted: 15 April 2024

Recruitment & Eligibility

• Status: Withdrawn
• Sex: Not specified
• Target Recruitment: 28

Inclusion Criteria

* Age over 18 years old
* Fitzpatrick skin type II or III
* Desk presence of at least 2,5 days per week during the 8 weeks study period
or at least 4 days present in the office.
* Medically fit to work the hours as contractually agreed

Exclusion Criteria

* * Current pregnancy, breast feeding or a desire to become pregnant
* Office workers with 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
* 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

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>The main study parameter is the difference in 25(OH)D serum levels. </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>self reported indicators of sleep timing, sleep quality and general levels of<br /><br>fatigue. </p><br>