Evidence map›Paper›PMID 29630669›Full record

ArticlePloS one2018

Vitamin D status and its relation to exercise performance and iron status in young ice hockey players.

Joanna Orysiak, Joanna Mazur-Rozycka, John Fitzgerald, Michal Starczewski, Jadwiga Malczewska-Lenczowska, Krzysztof Busko

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 3 pooled it
–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

14 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Review
  9. Youth Athlete Development and Nutrition.Sports medicine (Auckland, N.Z.) · 2021
    Review
  10. Article
  11. Vitamin D, sport and health: a still unresolved clinical issue.Journal of endocrinological investigation · 2020
    Review
  12. Repeated Sprint Ability Demands in U16 to U19 Highly Trained Handball Players Concerning Playing Position.International journal of environmental research and public health · 2020
    Article
  13. Article
  14. Review
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.

Joanna OrysiakDepartment of Nutrition Physiology and Dietetics, Institute of Sport - National Research Institute, Warsaw, Poland.
Joanna Mazur-RozyckaCentral Institute For Labour Protection - National Research Institute (CIOP- PIB), Department of Ergonomics, Warsaw, Poland.
John FitzgeraldDepartment of Kinesiology and Public Health Education, University of North Dakota, Grand Forks, North Dakota, United States of America.
Michal StarczewskiDepartment of Physiology, Institute of Sport - National Research Institute, Warsaw, Poland.
Jadwiga Malczewska-LenczowskaDepartment of Nutrition Physiology and Dietetics, Institute of Sport - National Research Institute, Warsaw, Poland.
Krzysztof BuskoDepartment of Anatomy and Biomechanics, Kazimierz Wielki University, Bydgoszcz, Poland.ORCID 0000-0002-6456-3502

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aim was to examine the association between serum vitamin D concentration and isometric strength of various muscle groups, vertical jump performance, and repeated sprint ability in young ice hockey players. The secondary aim was to determine the association between vitamin D deficiency and indices of iron status.

methodsFifty male ice hockey players (17.2±0.9 years) participated in this cross-sectional study. Exercise performance was evaluated using isometric strength measures of upper and lower extremities, vertical jump performance and repeated sprint ability (RSA). Blood samples were collected for the determination of serum 25-hydroxyvitamin D (25(OH)D) and multiple indicies of iron status.

resultsThe mean serum 25(OH)D concentration was 30.4 ng·ml-1 and ranged from 12.5 to 91.4 ng·ml-1. Eleven participants (22%) had vitamin D deficiency and 20 athletes (40%) had vitamin D insufficiency. Serum 25(OH)D concentration was not positively correlated with isometric muscle strength, vertical jump performance, or RSA after adjusting for age, training experience, fat mass, fat free mass and height. Serum 25(OH)D concentration was not associated with indices of iron status.

conclusionVitamin D insufficiency is highly prevalent in ice hockey players, but 25(OH)D concentration but it is not associated with exercise performance or indices of iron status.

Indexed as

AdolescentAthletic PerformanceCross-Sectional StudiesExerciseHockeyHumansMaleMuscle StrengthPhysical EndurancePhysical FitnessVitamin DVitamin D Deficiency25-hydroxyvitamin DVitamin D

Identifiers

PMID29630669
PMCPMC5891016

What OpenQuestion holds

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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.