A randomized, controlled lower leg growth study of vitamin D supplementation to healthy children during the winter season.

What Was Tested

Researchers studied Vitamin D, K2, Magnesium and Zinc in this randomized controlled trial publication.

To see whether supplementation of vitamin D to healthy children during winter affects seasonal growth.

Who Took Part

By PubMed's age tags, the people studied were children and teenagers, both men and women.

How the Study Was Run

The design is described as randomized, double-blind, placebo-controlled and crossover.

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

As a double-blind Vitamin D, K2, Magnesium and Zinc study, the assignments were hidden from both participants and investigators until the end.

A placebo (an inactive look-alike) gave the Vitamin D, K2, Magnesium and Zinc group a baseline to be compared against.

In the crossover set-up each of the participants took both Vitamin D, K2, Magnesium and Zinc and the comparison in turn, acting as their own control.

Knemometry of the right lower leg was performed on the first and last day of each period.

What Was Measured

PubMed files the paper under topics including Denmark, Dietary Supplements, Fibula, Seasons, Sunlight, Tibia and Vitamin D.

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 abstract goes on to report its results in about 3 sentences; this page does not restate them, so read the paper for the findings and their limits.

The publication is from 2003 (Annals of human biology), a journal based in England.

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