Observational studyJournal of nutritional science2020
Seasonal variation in vitamin D status, bone health and athletic performance in competitive university student athletes: a longitudinal study.
Observational study in Journal of nutritional science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.
- Difference in Levels of Vitamin D between Indoor and Outdoor Athletes: A Systematic Review and Meta-Analysis.International journal of molecular sciences · 2023Pooled it
- Trial
- Review
- The decline of vitamin D in adolescent athletes: insights from a one-year follow-up and its association with electrocardiographic changes.Frontiers in cardiovascular medicine · 2025Article
- Effect of serum 25-hydroxyvitamin D level on quadriceps strength: a systematic review and meta-analysis.BMC sports science, medicine & rehabilitation · 2024Article
- Stress fractures and overuse injuries in children and adolescents.Journal of the Pediatric Orthopaedic Society of North America · 2024Article
- Can the supplementation of vitamin D, sun exposure, and isolation during the COVID-19 pandemic affect the seasonal concentration of 25(OH)D and selected blood parameters among young soccer players in a one-year training season?Journal of the International Society of Sports Nutrition · 2023Article
- Article
- Vitamin D Fortification and Its Effect on Athletes' Physical Improvement: A Mini Review.Foods (Basel, Switzerland) · 2023Article
- Vitamin D deficiency in athletes: Laboratory, clinical and field integration.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2022Review
- Relationship Between Metabolites of Vitamin D, Free 25-(OH)D, and Physical Performance in Indoor and Outdoor Athletes.Frontiers in physiology · 2022Article
- Physical Activity-Dependent Regulation of Parathyroid Hormone and Calcium-Phosphorous Metabolism.International journal of molecular sciences · 2020Review
- A vitamin-biomarker risk score for 90-day functional outcome after acute ischemic stroke: development and internal validation in a retrospective cohort.Frontiers in neurologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Vitamin D deficiency has been commonly reported in elite athletes, but the vitamin D status of UK university athletes in different training environments remains unknown. The present study aimed to determine any seasonal changes in vitamin D status among indoor and outdoor athletes, and whether there was any relationship between vitamin D status and indices of physical performance and bone health. A group of forty-seven university athletes (indoor
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.