Clinical Trials Logo

Clinical Trial Summary

People living at Northern latitudes are at risk of suffering from vitamin D insufficiency due to low sun exposure and the risk may be even more pronounced among elite swimmers since indoor training further reduces sun exposure. In light of this, the investigators want to examine vitamin D status in young elite swimmers and if there is an association between vitamin D status and muscle strength.


Clinical Trial Description

To examine vitamin D status in young elite swimmers and if there is an association between vitamin D status and muscle strength, twenty-nine swimmers, 12 female and 17 male (16-24 years) residing at latitude 55-56°N were included to the trial conducted in March-April. Blood samples were analysed for serum 25-hydroxyvitamin D (s-25(OH)D) and hand-grip strength was measured as marker of muscle strength. Subjects´ vitamin D and calcium intake were assessed by food frequency questionnaire and sun exposure and training status by questionnaires. ;


Study Design

Observational Model: Cohort, Time Perspective: Prospective


Related Conditions & MeSH terms


NCT number NCT02858882
Study type Observational
Source University of Copenhagen
Contact
Status Completed
Phase N/A
Start date February 2007
Completion date April 2007

See also
  Status Clinical Trial Phase
Completed NCT02822651 - Hypovitaminosis D Prediction Score N/A
Completed NCT01825616 - Vitamin D2, Muscle Damage, NASCAR Pitcrew N/A
Completed NCT01101243 - Maintenance of Vitamin D Level by UVB Radiation N/A
Completed NCT00650780 - Vitamin D Binding Protein (Gc) Allele Variation Effects Response to Vitamin D Treatment N/A
Active, not recruiting NCT01798030 - Vitamin D Retrospective Study and Role With Disease
Completed NCT00864539 - Comparison of the Efficacy of Calcium-cholecalciferol Foodstuffs and Calcium-cholecalciferol Supplement Phase 2/Phase 3
Suspended NCT04399291 - Vitamin D Status and Bone Health of Older Adults in Care Facilities
Completed NCT00818467 - UVB Light and Sunscreen Phase 4
Completed NCT05931705 - Vit D Receptor Gene Polymorphism
Recruiting NCT03132103 - Vitamin D Supplementation and Immunity/Physical Performance N/A
Completed NCT01723852 - Vitamin D Intervention in Infants N/A
Completed NCT01074541 - The Vitamin D Dose-Response Relationship N/A
Completed NCT01042197 - The Relation Between Vitamin D Production and UVB Exposed Body Surface Area N/A
Completed NCT02474446 - Getting Vitamin D Dosing Right N/A
Recruiting NCT06241976 - Diabetes Risk in East London and Its Association With Vitamin D by Ethnic Group (DELVE) N/A
Completed NCT02608164 - A Comparison of Capsules and Oral Spray Solution as Methods of Delivering Vitamin D3 and Raising Status N/A
Completed NCT02860663 - Effect of Different Vitamin D Vitamers on Vitamin D Status N/A
Completed NCT01348594 - The Impact of Vitamin D Status on in Vitro Fertilization (IVF) Outcomes N/A