Vitamin D Status and Supplementation in Athletes

Vitamin D Status and Supplementation in Elite Athletes

Status

Completed

Phases

Phase 3

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02008201

Acronym

D-status

Enrollment

153

Registered

2013-12-11

Start date

2012-05-31

Completion date

2014-04-30

Last updated

2014-12-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vitamin D Deficiency

Keywords

dose-response study

Brief summary

The objectives of this study are 1) to assess the prevalence of vitamin D deficiency in a group of sub elite athletes and 2) to identify seasonal changes in vitamin D status and the effect that supplementation may have during the course of a year. The study is a double blinded parallel study design.

Detailed description

Study population: 175 elite/ sub elite athletes, male and female, aged 18-60y, from a variety of sport disciplines

Interventions

DIETARY_SUPPLEMENTvitamin D

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender

ALL

Age

18 Years to 60 Years

Healthy volunteers

Yes

Inclusion criteria

* athletes * 19-60y

Exclusion criteria

* subjects who take vitamin D supplements

Design outcomes

Primary

Measure	Time frame
Change in serum 25(OH)D	Every 3 months during one year

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026