Sunlight Exposure and Vitamin D in Children

January 14, 2013 updated by: Lesley Rhodes, University of Manchester

Sunlight Exposure and Vitamin D Status of Children in the UK

The purpose of this study is to examine the amount of sunlight exposure and vitamin D status of adolescent schoolchildren in each season throughout the year.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

125

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
      • Manchester, United Kingdom, M6 8HD
        • Salford Royal NHS Foundation Trust

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

12 years to 15 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Schoolchildren in Greater Manchester

Description

Inclusion Criteria:

  • Healthy school children aged 12-15 years
  • White Caucasian
  • Male or female

Exclusion Criteria:

  • History of photosensitivity disorder

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Healthy volunteers
Healthy adolescents aged 12-15 years
Other: None - observational study

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Serum concentration of 25-hydroxyvitamin D
Time Frame: Approximately every 3 months
Approximately every 3 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Amount of sunlight exposure received
Time Frame: Approx every 3 months
Exposure to sunlight over 7 consecutive days is measured using polysulphone badges with one badge for weekdays and a second badge for the weekend.
Approx every 3 months
Dietary intake of vitamin D
Time Frame: Approximately every 3 months
Intake of foods containing vitamin D is recorded for a one week period and the average daily intake determined.
Approximately every 3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Manchester

Investigators

  • Principal Investigator: Lesley Rhodes, MBBS MD FRCP, University of Manchester

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2010

Primary Completion (Actual)

July 1, 2012

Study Completion (Actual)

July 1, 2012

Study Registration Dates

First Submitted

November 18, 2011

First Submitted That Met QC Criteria

November 18, 2011

First Posted (Estimate)

November 23, 2011

Study Record Updates

Last Update Posted (Estimate)

January 16, 2013

Last Update Submitted That Met QC Criteria

January 14, 2013

Last Verified

January 1, 2013

More Information

Terms related to this study

Other Study ID Numbers

  • Bupa Protocol 1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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