Evidence map›Paper›PMID 29845086›Full record

ArticleOrthopaedic journal of sports medicine2018

Vitamin D Insufficiency Among Professional Basketball Players: A Relationship to Fracture Risk and Athletic Performance.

Jason A Grieshober, Nima Mehran, Christos Photopolous, Matthew Fishman, Stephen J Lombardo, F Daniel Kharrazi

Open access · goldAbstract read
In one paragraph

Article in Orthopaedic journal of sports medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.7field-weighted citation impact, top 7% 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, 31 citations in OpenAlex.

  1. Trial
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  3. FokI Polymorphism of theNutrients · 2025
    Article
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  12. Review
  13. Vitamin D, sport and health: a still unresolved clinical issue.Journal of endocrinological investigation · 2020
    Review
  14. Article
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 1 institution in 1 country.

Jason A GrieshoberKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
Nima MehranKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
Christos PhotopolousKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
Matthew FishmanKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
Stephen J LombardoKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
F Daniel KharraziKerlan-Jobe Orthopaedic Clinic, Los Angeles, California, USA.
Cedars-Sinai Kerlan-Jobe Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D is believed to play a role in influencing fracture risk and athletic performance. Insufficiency of vitamin D affects an estimated three-quarters of the United States population. Hypovitaminosis D has also been demonstrated to be quite common among professional basketball players in the National Basketball Association (NBA). PURPOSE: To determine whether a relationship exists between vitamin D levels and fracture risk and athletic performance (as measured by NBA draft status) among elite basketball players. STUDY

designDescriptive epidemiology study.

methodsData were obtained from the NBA regarding combine participants from 2009 through 2013. This information included vitamin D level, demographic information, fracture history, and NBA draft status. The data were analyzed to determine associations between vitamin D level and fracture risk and NBA draft status.

resultsVitamin D levels were measured for 279 players at the NBA Combine from 2009 through 2013. Vitamin D deficiency (<20 ng/mL) was seen in 32.3% of athletes, vitamin D insufficiency (20-30 ng/mL) was seen in 41.2%, and sufficient levels of vitamin D (>30 ng/mL) were present in only 26.5%. A total of 118 players had a history of at least 1 fracture. Vitamin D level was not predictive of fracture risk. Contrary to our hypothesis, players with a history of stress fracture had a significantly greater mean vitamin D level than those without such history (30.7 vs 25.1 ng/mL;

conclusionHypovitaminosis D is quite common among NBA Combine participants, affecting 73.5%. While no significant relationship was found between vitamin D level and fracture history, patients with a history of stress fracture had significantly greater mean vitamin D levels. Additionally, participants with greater vitamin D levels were more likely to be drafted into the NBA. This information supports the potential role of vitamin D in influencing athletic performance.

Indexed as

athletic performanceprofessional basketballstress fracturesvitamin D insufficiency

Identifiers

PMID29845086
PMCPMC5964858
OpenAlexW2804312312

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.