NCT00973583

Vitamin D Supplementation for the Prevention of Acute Respiratory Tract Infections

Vitamin D Supplementation for the Prevention of Acute Respiratory Tract Infections; a Randomized Double-blinded Trial in Young Finnish Men

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 164 (actual)
• Sponsor: Tampere University · Academic / Other
• Sex: Male
• Age: —
• Healthy volunteers: Accepted

Summary

The investigators earlier clinical study in 754 young Finnish men demonstrated a significant negative association of serum 25-OHD concentration with acute respiratory tract infections. The present study aimed to determine whether vitamin D supplementation may decrease the incidence of acute respiratory tract infections.

Detailed description

Subjects comprised 164 male conscripts at a military base in Finland. Half of the participants were randomly allocated to receive 400 IU vitamin D daily and half received placebo from October through March. Serum vitamin D and plasma parathyroid hormone concentrations were determined. Subjects were followed for 6 months and the primary outcome was the number of days absent from duty due to ARTI.

Conditions

• Respiratory Tract Infections

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	vitamin D	vitamin D3 400 IU daily
DIETARY_SUPPLEMENT	placebo	placebo

Timeline

• Start date: 2005-05-01
• Primary completion: 2009-12-01
• Completion: 2010-12-01
• First posted: 2009-09-09
• Last updated: 2014-12-03

Locations

1 site across 1 country: Finland