The relationship between physical activity and vitamin D status in postpartum lactating and formula-feeding women.

What Was Tested

This randomized controlled trial looks at Vitamin D, K2, Magnesium and Zinc.

Existing research shows an association between physical activity levels and vitamin D status in the elderly, men, women, children, and adolescent populations.

This association has not yet been investigated in postpartum women.

Who Took Part

According to the abstract, 286 women were involved.

PubMed indexes the participants as young adults and adults, women only.

How the Study Was Run

The design is described as randomized and double-blind.

The women 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 women and researchers unaware of who received Vitamin D, K2, Magnesium and Zinc.

What Was Measured

Existing research shows an association between physical activity levels and vitamin D status in the elderly, men, women, children, and adolescent populations.

A post hoc analysis of 286 postpartum women with self reported physical activity data from the America on the Move survey, and measured circulating serum 25(OH)D (measured by RIA) as an indicator of vitamin D status, was gathered at baseline (4-6 weeks postpartum), 4 months, and 7 months postpartum.

The subject headings attached to it are Body Mass Index, Exercise, Infant Formula, Lactation, New York, Postpartum Period and Racial Groups.

The authors tagged it with the keywords 25(OH)D, Lactating, Physical activity and Vitamin D.

What This Means in Plain Language

The paper is a randomized and double-blind study of Vitamin D, K2, Magnesium and Zinc in 286 women.

The publication is from 2018 (The Journal of steroid biochemistry and molecular biology), a journal based in England.

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