Linking vitamin D status, executive functioning and self-perceived mental health in adolescents through multivariate analysis: A randomized double-blind placebo control trial.

What Was Tested

The paper reports a study of Vitamin D, K2, Magnesium and Zinc, published as a randomized controlled trial.

The aim of the present randomized double-blind placebo control trial was to investigate if vitamin D supplementation had an effect on vitamin D status, executive functioning and self-perceived mental health in a group of Norwegian adolescents during winter time.

Why It Was Studied

Fifty adolescents were randomly assigned into an intervention group (vitamin D pearls) or a control group (placebo pearls).

Before (pre-test in December/January) and after (post-test in April/May) the intervention period the participants were exposed to a test procedure, consisting of blood draw, completion of cognitive tests (Tower of Hanoi and Tower of London), and the Youth Self-report version of the Child Behavior Checklist.

Who Took Part

The age groups tagged for this paper are teenagers, both men and women.

How the Study Was Run

In design terms this was a randomized, double-blind and placebo-controlled study.

The participants were allocated by chance, so the Vitamin D, K2, Magnesium and Zinc group and the comparison group should start out alike.

Blinding on both sides kept the participants and researchers unaware of who received Vitamin D, K2, Magnesium and Zinc.

Some participants received a placebo instead of Vitamin D, K2, Magnesium and Zinc, giving a reference point.

What Was Measured

Before (pre-test in December/January) and after (post-test in April/May) the intervention period the participants were exposed to a test procedure, consisting of blood draw, completion of cognitive tests (Tower of Hanoi and Tower of London), and the Youth Self-report version of the Child Behavior Checklist.

Topics PubMed links to this paper include Executive Function, Health Knowledge, Attitudes, Practice, Mental Health, Multivariate Analysis, Norway, Psychological Tests and Seasons.

Author keywords: Vitamin D, adolescents, executive functions and intervention study.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Vitamin D, K2, Magnesium and Zinc.

The publication is from 2017 (Scandinavian journal of psychology), a journal based in England.

More context: the Vitamin D, K2, Magnesium and Zinc compound page, all human trials.