← Human Trials & Peer-Reviewed Studies
Vitamin D₃ Supplementation Reduces the Symptoms of Upper Respiratory Tract Infection during Winter Training in Vitamin D-Insufficient Taekwondo Athletes: A Randomized Controlled Trial.
Plain-language guide to PMID 30223447 (2018): randomized controlled trial of Vitamin D, K2, Magnesium and Zinc.
Key Facts
- PMID
- 30223447
- Journal
- International journal of environmental research and public health
- Year
- 2018
- Study type
- Randomized Controlled Trial
- Authors
- Jung HC et al. (5 authors)
- DOI
- 10.3390/ijerph15092003
What This Study Did, in Plain Language
What Was Tested
Researchers studied Vitamin D, K2, Magnesium and Zinc in this randomized controlled trial publication.
This study examined the effects of vitamin D₃ supplementation on salivary immune functions and symptoms of URTI in vitamin D-insufficient taekwondo athletes.
Blood samples were collected two times (pre- and post-tests) for analyzing serum 25(OH)D concentration while salivary samples were obtained three times (pre-, mid-, and post-tests) for secretory immunoglobulin A (SIgA) and lactoferrin analyses.
Who Took Part
By PubMed's age tags, the people studied were young adults, men only.
How the Study Was Run
The researchers set it up as a randomized 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.
A placebo (an inactive look-alike) gave the Vitamin D, K2, Magnesium and Zinc group a baseline to be compared against.
What Was Measured
Blood samples were collected two times (pre- and post-tests) for analyzing serum 25(OH)D concentration while salivary samples were obtained three times (pre-, mid-, and post-tests) for secretory immunoglobulin A (SIgA) and lactoferrin analyses.
The subject headings attached to it are Athletes, Body Composition, Cholecalciferol, Lactoferrin, Martial Arts, Respiratory Tract Infections and Saliva.
The authors tagged it with the keywords high-intensity training, respiratory immune function, secretory immunoglobulin and vitamin D.
What This Means in Plain Language
The paper is a randomized and placebo-controlled study of Vitamin D, K2, Magnesium and Zinc.
The publication is from 2018 (International journal of environmental research and public health), a journal based in Switzerland.
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.
Related Pages
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.