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Vitamin D Status and Muscle Function

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University of Copenhagen

Status

Completed

Conditions

Vitamin D Status
Muscle Function

Treatments

Other: Screening

Study type

Observational

Funder types

Other

Identifiers

NCT02858882
KF01322182

Details and patient eligibility

About

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.

Full 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.

Enrollment

29 patients

Sex

All

Ages

16 to 35 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Age: 16-35 years

Top atlets, conducting:

  • Hard physical activity
  • Indoor elitesport min. 10 hours a week
  • Healthy, without use of any medications
  • Eat fish max 2 times per week

Exclusion criteria

  • Use of corticosteroids
  • Illness
  • Use of supplements
  • Use of solarium
  • Donation of blood within the last 3 months
  • Having spent time below the latitude of 42° north from September through April

Trial design

29 participants in 1 patient group

Swimmers
Description:
Screening of elite athletes
Treatment:
Other: Screening

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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