Vitamin D Deficiency Clinical Trial
Official title:
Fitness and Health Characteristics in Conscripts With Supplementation of Vitamin D
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 |
Verified date | September 2021 |
Source | Tartu University Hospital |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
A longitudinal, triple-blinded, randomized, placebo-controlled trial, with a 7-month follow-up period is conducted between October 2016 to April 2017.
Status | Completed |
Enrollment | 63 |
Est. completion date | April 25, 2017 |
Est. primary completion date | April 20, 2017 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Male |
Age group | 19 Years to 27 Years |
Eligibility | Inclusion Criteria: - participating in military service at the Estonian Defence Forces - voluntarity to participate in the study Exclusion Criteria: - inability to continue military service for any reason, during the 7 month follow-up period |
Country | Name | City | State |
---|---|---|---|
Estonia | Kuperjanov Infantry Battalion, Estonian Defence Forces | Võru | Võrumaa |
Lead Sponsor | Collaborator |
---|---|
Leho Rips | Estonian Defence Forces, University of Tartu |
Estonia,
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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