depressive symptoms, poor physical functioning.
Conditions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - age 60-80 years - mild depressive symptoms - at least one functional limitation - serum 25(OH)D levels between 15 and 50 nmol/l (winter) or 15 and 70 nmol/l (summer) - ability to comply with the study Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 25 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 115
Exclusion criteria
Exclusion criteria: - full-blown depressive disorder - use of antidepressants - vitamin D (more than 400 IU/day) or calcium (more than 1000 mg/day) supplementation - major life-threatening illness - living in an aged-people's home or nursing home
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: The primary objective of the D-Vitaal trial is to answer the following two questions: 1. Does vitamin D supplementation decrease depressive symptoms in older persons? 2. Does vitamin D supplementation improve physical performance and decrease functional limitations in older persons? ;Secondary Objective: Secondary objectives: investigate whether: - vitamin D supplementation decreases anxiety and improves cognition and quality of life in older persons - vitamin D supplementation prevents the development of full-blown major depression in older persons - vitamin D supplementation is a cost-effective strategy in the prevention of increasing depressive symptoms and functional limitations and declining physical performance.;Primary end point(s): - change in CES-D score (depression questionnaire) - change in physical performance score - change in the number as well as the degree of functional limitations;Timepoint(s) of evaluation of this end point: 12 months | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary end point(s): - change in anxiety, cogniton and quality of life scores - incidence of full-blown depression - change in timed-up-and-go test score - costs;Timepoint(s) of evaluation of this end point: 6 months, 12 months | — |
Countries
Netherlands
Contacts
VU University Medical Centre