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Sunlight Exposure and Vitamin D in Children

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: November 23, 2011
Last Update Posted: January 16, 2013
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Lesley Rhodes, University of Manchester
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.

Condition Intervention
Healthy Schoolchildren Other: None - observational study

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Sunlight Exposure and Vitamin D Status of Children in the UK

Resource links provided by NLM:

Further study details as provided by Lesley Rhodes, University of Manchester:

Primary Outcome Measures:
  • Serum concentration of 25-hydroxyvitamin D [ Time Frame: Approximately every 3 months ]

Secondary Outcome Measures:
  • 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.

  • 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.

Enrollment: 125
Study Start Date: June 2010
Study Completion Date: July 2012
Primary Completion Date: July 2012 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Healthy volunteers
Healthy adolescents aged 12-15 years
Other: None - observational study


Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years to 15 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Schoolchildren in Greater Manchester

Inclusion Criteria:

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

Exclusion Criteria:

  • History of photosensitivity disorder
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01477827

United Kingdom
Salford Royal NHS Foundation Trust
Manchester, United Kingdom, M6 8HD
Sponsors and Collaborators
University of Manchester
Principal Investigator: Lesley Rhodes, MBBS MD FRCP University of Manchester
  More Information

Responsible Party: Lesley Rhodes, Professor of Experimental Dermatology, University of Manchester
ClinicalTrials.gov Identifier: NCT01477827     History of Changes
Other Study ID Numbers: Bupa Protocol 1
First Submitted: November 18, 2011
First Posted: November 23, 2011
Last Update Posted: January 16, 2013
Last Verified: January 2013

Additional relevant MeSH terms:
Vitamin D
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents