Long-term Effects of Calcium β-Hydroxy-β-Methylbutyrate and Vitamin D3 Supplementation on Muscular Function in Older Adults With and Without Resistance Training: A Randomized, Double-blind, Controlled Study.

Plain-language guide to PMID 32857128 (2020): double-blind randomized controlled trial of Vitamin D, K2, Magnesium and Zinc in 117 participants.

Key Facts

PMID: 32857128
Journal: The journals of gerontology. Series A, Biological sciences and medical sciences
Year: 2020
Study type: Randomized Controlled Trial
Authors: Rathmacher JA et al. (10 authors)
DOI: 10.1093/gerona/glaa218

What This Study Did, in Plain Language

What Was Tested

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

The primary aim of this study was to determine whether supplementation with calcium β-hydroxy-β-methylbutyrate (HMB) and vitamin D3 (D) would enhance muscle function and strength in older adults.

Why It Was Studied

Study participants were randomly assigned to treatments consisting of: (a) Control + no exercise, (b) HMB+D + no exercise, (c) Control + exercise, and (d) HMB+D + exercise.

The study evaluated 117 participants via multiple measurements over the 12 months that included body composition, strength, functionality, and questionnaires.

Who Took Part

According to the abstract, 117 participants were involved.

PubMed indexes the participants as middle-aged adults and older adults, both men and women.

How the Study Was Run

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

Because people in this Vitamin D, K2, Magnesium and Zinc study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

Neither the participants nor the staff measuring them knew who was on Vitamin D, K2, Magnesium and Zinc, so expectations could not easily colour the readings.

What Was Measured

The study evaluated 117 participants via multiple measurements over the 12 months that included body composition, strength, functionality, and questionnaires.

Topics PubMed links to this paper include Body Composition, Calcium, Muscle Strength, Resistance Training, Surveys and Questionnaires, Valerates and Vitamin D.

The authors tagged it with the keywords β-Hydroxy-β-methylbutyrate, Aging and Functionality.

What This Means in Plain Language

The paper is a randomized and double-blind study of Vitamin D, K2, Magnesium and Zinc in 117 participants.

The publication is from 2020 (The journals of gerontology. Series A, Biological sciences and medical sciences), a journal based in United States.

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

Our Notes on the Compound

Vitamin D, K2, Magnesium and Zinc: Magnesium is described as required for AMPK to function.

Vitamin D, K2, Magnesium and Zinc in the library

Source: PubMed record. This explanation is written by PeptideWhiz from the public record. For research and education only. Not medical advice; no dosing information is given.