Effect of Vitamin D Supplementation on Blood Pressure and Insulin Sensitivity

A randomised phase III study to evaluate the effects of Vitamin D supplementation on patients with low vitamin D levels to reduce blood pressure levels and improve insulin sensitivity

Status

Recruiting

Phases

Phase 3

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12605000017628

Enrollment

120

Registered

2005-07-18

Start date

2005-07-07

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

A randomised double-blind clinical trial of 100 ug daily doses of vitamin D3 versus placebo tablets.

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Prevention

Masking

Blinded (masking used)

Eligibility

Sex/Gender

All

Age

40 Years to No maximum

Healthy volunteers

Inclusion criteria

Aged >40 years (Tongan and Maori) and >65 years (European) 25OHD levels <50 nmol/L.

Exclusion criteria

Treated diabetes, treated hypertension, taking of vitamin D supplements (including cod liver oil); serum calcium level above 2.60 mmol/L, regular outdoor activities during the middle of day during the study period, recent high sun exposure (eg. holidays in the Pacific islands); or planned holidays to areas with high sun exposure during the study period.

Outcome results