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Vitamin D Status and Supplementation in Athletes

NCT ID: NCT02008201

Last Updated: 2014-12-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

153 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-05-31

Study Completion Date

2014-04-30

Brief Summary

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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

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

Conditions

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Vitamin D Deficiency

Keywords

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dose-response study

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Vitamin D dose 1

Vitamin D dose 1

Group Type EXPERIMENTAL

vitamin D

Intervention Type DIETARY_SUPPLEMENT

Vitamin D dose 2

Vitamin D dose 2

Group Type EXPERIMENTAL

vitamin D

Intervention Type DIETARY_SUPPLEMENT

Vitamin D dose 3

Vitamin D dose 3

Group Type EXPERIMENTAL

vitamin D

Intervention Type DIETARY_SUPPLEMENT

observational

No dose

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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vitamin D

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* athletes
* 19-60y

Exclusion Criteria

* subjects who take vitamin D supplements
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Wageningen University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Lisette de Groot, Prof. Dr.

Role: PRINCIPAL_INVESTIGATOR

Wageningen University

Locations

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Wageningen University

Wageningen, , Netherlands

Site Status

Countries

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Netherlands

Other Identifiers

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D-status

Identifier Type: -

Identifier Source: org_study_id