Evidence map›Paper›PMID 33821332›Full record

Trial reportEuropean journal of applied physiology2021

Vitamin D supplementation does not enhance resistance training-induced gains in muscle strength and lean body mass in vitamin D deficient young men.

Lauri Savolainen, Saima Timpmann, Martin Mooses, Evelin Mäestu, Luule Medijainen, Lisette Tõnutare, Frederik Ross, Märt Lellsaar, Eve Unt, Vahur Ööpik

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Trial
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  5. Trial
  6. Review
  7. Effects of vitamin DBiology of sport · 2025
    Article
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  9. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Lauri SavolainenInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Saima TimpmannInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Martin MoosesInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Evelin MäestuInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Luule MedijainenInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Lisette TõnutareInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Frederik RossInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Märt LellsaarInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia.
Eve UntDepartment of Cardiology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia.
Vahur ÖöpikInstitute of Sport Sciences and Physiotherapy, University of Tartu, 18 Ülikooli St, 50090, Tartu, Estonia. vahur.oopik@ut.ee.ORCID http://orcid.org/0000-0003-2668-4757

Funding

Estonian Ministry of Education and Research IUT 20-58Estonian Ministry of Education and Research PRG435
6 · The paper itself

Abstract

purposeVitamin D (Vit-D) supplementation has been shown to increased muscle strength in young adults. It remains unclear if Vit-D supplementation enhances the efficacy of resistance training (RT). This study tested the hypothesis that Vit-D supplementation would enhance the RT-induced increases in muscle strength and lean body mass (LBM) in Vit-D deficient young men.

methodsThirty-nine men (baseline serum 25(OH)D < 50 nmol L

resultsDuring 12-week RT, energy and nutrient (except Vit-D) intake and training loads did not differ in the two groups. Serum 25(OH)D levels increased from 36.3 ± 9.2 to 142.4 ± 21.9 nmol L

conclusionVit-D supplementation does not enhance the efficacy of RT in terms of muscle strength and LBM gains in Vit-D deficient young healthy men.

Indexed as

Body Mass IndexResistance TrainingDouble-Blind MethodHumansMaleMuscle StrengthVitamin DVitamin D DeficiencyYoung AdultVitamin DBody compositionHigh daily vitamin D doseMuscle strengthQuasi-randomized controlled trialSerum 25-hydroxyvitamin D

Identifiers

PMID33821332

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.