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Effects of Vitamin D Supplementation on Haematological Values and Muscle Recovery in Elite Male Traditional Rowers.
Plain-language guide to PMID 30545134 (2018): randomized controlled trial of Vitamin D, K2, Magnesium and Zinc.
Key Facts
- PMID
- 30545134
- Journal
- Nutrients
- Year
- 2018
- Study type
- Randomized Controlled Trial
- Authors
- Mielgo-Ayuso J et al. (7 authors)
- DOI
- 10.3390/nu10121968
What This Study Did, in Plain Language
What Was Tested
This randomized controlled trial looks at Vitamin D, K2, Magnesium and Zinc.
The secondary aim was to examine if serum 25(OH)D is a predictor of testosterone and cortisol levels.
Repeated-measures ANOVA with group factor (GC and GVD3) were used to examine if the interaction of the different values was the same or different between the groups throughout the study (time × group) after vitamin D3 treatment.
Why It Was Studied
Deficient levels of 25-hydroxyvitamin D (25(OH)D) (<30 ng/mL) may compromise health and athletic performance.
Supplementation with oral vitamin D can favor the state of iron metabolism, and testosterone and cortisol as an indicator of muscle recovery of the athlete with a deficiency.
Who Took Part
The age groups tagged for this paper are young adults and adults, men only.
How the Study Was Run
The researchers set it up as a randomized study.
The participants were allocated by chance, so the Vitamin D, K2, Magnesium and Zinc group and the comparison group should start out alike.
To analyze if 25(OH)D was a good predictor of testosterone, cortisol, and testosterone/cortisol ratio a stepwise regression model was performed.
What Was Measured
Deficient levels of 25-hydroxyvitamin D (25(OH)D) (<30 ng/mL) may compromise health and athletic performance.
Supplementation with oral vitamin D can favor the state of iron metabolism, and testosterone and cortisol as an indicator of muscle recovery of the athlete with a deficiency.
The subject headings attached to it are Athletes, Dietary Supplements, Hematocrit, Hydrocortisone, Muscle Strength, Muscle, Skeletal and Physical Endurance.
Author keywords: cortisol, hemoglobin, recovery, strength-endurance, testosterone and vitamin D.
What This Means in Plain Language
The paper is a randomized study of Vitamin D, K2, Magnesium and Zinc.
Results are reported in around 11 sentences of the abstract; we leave them to the paper itself rather than summarise them.
The publication is from 2018 (Nutrients), 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.