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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04359524
Other study ID # R-002
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date October 1, 2016
Est. completion date April 25, 2017

Study information

Verified date September 2021
Source Tartu University Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

A longitudinal, triple-blinded, randomized, placebo-controlled trial, with a 7-month follow-up period is conducted between October 2016 to April 2017.


Description:

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Study Design


Related Conditions & MeSH terms


Intervention

Dietary Supplement:
Vitamin D3 (1200 IU/30µg)

Placebo
Placebo oil capsule

Locations

Country Name City State
Estonia Kuperjanov Infantry Battalion, Estonian Defence Forces Võru Võrumaa

Sponsors (3)

Lead Sponsor Collaborator
Leho Rips Estonian Defence Forces, University of Tartu

Country where clinical trial is conducted

Estonia, 

Outcome

Type Measure Description Time frame Safety issue
Other serum parathyroid hormone serum parathyroid hormone concentration (pmol/l) 0, 2, 5 and 7 months of recruitment
Other serum calcium serum calcium (Ca) concentration (mmol/l) 0, 2, 5 and 7 months of recruitment
Other serum ionized calcium serum ionized calcium (Ca-i) concentration (mmol/l) 0, 2, 5 and 7 months of recruitment
Other Hand Grip Strength Hand grip strength is determined by isometric contraction while standing, upper limb away from the body, using a hand dynamometer (Lafayette Instrument Co., USA). 0, 2, 5 and 7 months of recruitment
Other Testosterone Serum testosterone concentration (nmol/l) 0, 2, 5 and 7 months of recruitment
Other Cortisol Serum cortisol concentration (nmol/l) 0, 2, 5 and 7 months of recruitment
Primary Prevalence of vitamin D deficence Prevalence of vitamin D deficence as measured serum vitamin D 25(OH)D concentration. Vitamin D was considered as sufficient if the se-rum 25(OH)D concentration was =75 nmol/L, insufficient if <75 nmol/L, and deficient if <50 nmol/L. 0, 2, 5 and 7 months of recruitment
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