Vitamin D Status and Physical Activity during Wintertime in Forensic Inpatients-A Randomized Clinical Trial.

What Was Tested

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

This study aimed to gain deeper knowledge about the relationship between vitamin D and physical activity in a sample of forensic inpatients.

Sixty-seven male forensic inpatients participated.

Who Took Part

By PubMed's age tags, the people studied were adults and middle-aged adults, men only.

How the Study Was Run

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

Random assignment meant chance, not the researchers, decided who got Vitamin D, K2, Magnesium and Zinc and who got the comparison, which limits bias.

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

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

Vitamin D status was measured as 25-hydroxy vitamin D (25-OHD) pre- and post-intervention.

What Was Measured

The Physical Activity-Rating (PA-R) questionnaire was used to measure physical activity from January to May.

The results revealed that vitamin D status at post-test was positively correlated with physical activity, but there was no effect of vitamin D supplementation looking at the two randomized groups.

The subject headings attached to it are Body Mass Index, Dietary Supplements, Exercise, Inpatients, Nutritional Status, Prisoners and Seasons.

The authors tagged it with the keywords physical activity, randomized control trial, vitamin D status and winter.

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 2021 (Nutrients), a journal based in Switzerland.

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