Evidence map›Paper›PMID 34648100›Full record

ArticleSports medicine - open2021

Influence of 25-Hydroxy-Vitamin D Insufficiency on Maximal Aerobic Power in Elite Indoor Athletes: A Cross-Sectional Study.

Astrid Most, Oliver Dörr, Holger Nef, Christian Hamm, Timm Bauer, Pascal Bauer

Open access · goldAbstract read
In one paragraph

Article in Sports medicine - open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 16% of its field
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Effect of vitamin DJournal of the International Society of Sports Nutrition · 2023
    Trial
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  4. Article
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  6. Vitamin D status and its determinants in German elite athletes.European journal of applied physiology · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. 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

6 authors at 3 institutions in 1 country.

Astrid MostDepartment of Cardiology and Angiology, Justus- Liebig- University Giessen, Klinikstrasse 33, 35392, Giessen, Germany. astrid.most@innere.med.uni-giessen.de.
Oliver DörrDepartment of Cardiology and Angiology, Justus- Liebig- University Giessen, Klinikstrasse 33, 35392, Giessen, Germany.
Holger NefDepartment of Cardiology and Angiology, Justus- Liebig- University Giessen, Klinikstrasse 33, 35392, Giessen, Germany.
Christian HammDepartment of Cardiology and Angiology, Justus- Liebig- University Giessen, Klinikstrasse 33, 35392, Giessen, Germany.
Timm BauerDepartment of Cardiology, Internal Intensive Care, General Internal Medicine, Sana Klinikum, Offenbach, Germany.
Pascal BauerDepartment of Cardiology and Angiology, Justus- Liebig- University Giessen, Klinikstrasse 33, 35392, Giessen, Germany.
University of Giessen · DEKerckhoff Klinik · DESana Klinikum Offenbach · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe impact of vitamin D on musculoskeletal health is well-established, although its influence on physical performance is unclear. Therefore, we conducted this study to evaluate the impact of 25-hydroxy-vitamin D (25-OH vitamin D) concentrations with maximal aerobic power of professional indoor athletes.

resultsA total of 112 male professional athletes were included in this cross-sectional study, consisting of 88 handball and 24 ice hockey players. The maximal aerobic power was assessed with a standardized cycling ergometer test. Athletes were assigned to two groups according to their 25-OH vitamin D status: insufficient (< 30 ng/mL) and sufficient (≥ 30 ng/mL). Thirty-four players (30.4%) displayed insufficient (21.9 ± 5.9 ng/mL) and 78 (69.6%) sufficient 25-OH vitamin D concentrations (41.6 ± 8.6 ng/mL). Athletes with sufficient levels achieved a higher maximal aerobic power (3.9 ± 0.9 vs. 3.5 ± 0.8 W/kg, p = 0.03) compared to those with insufficient levels.

conclusionsThere is a high prevalence of 25-OH vitamin D insufficiency in professional indoor athletes, even in summer. Insufficient 25-OH vitamin D concentrations were associated with lower maximal aerobic power in male professional indoor athletes. Further, the 25-OH vitamin D concentration was identified as the only independent predictor of maximal aerobic power in these athletes, highlighting the impact of 25-OH vitamin D on physical performance. Therefore, 25-OH vitamin D concentrations of ≥ 30 ng/mL should be maintained to ensure optimal physical performance in these athletes.

Indexed as

25-OH vitamin D concentrationCycling ergometer testIndoor athletesMaximal aerobic power

Identifiers

PMID34648100
PMCPMC8517059
OpenAlexW3205780441

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.