ArticlePloS one2015
Changes of 25-OH-Vitamin D during Overwintering at the German Antarctic Stations Neumayer II and III.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.
What it found
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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.
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Who cites it
7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Antarctic Expeditions: A Systematic Review of the Physiological, Nutritional, Body Composition and Psychological Responses to Treks Across the Continental Ice.Sports medicine (Auckland, N.Z.) · 2025Pooled it
- Vitamin D status and supplementation in Antarctica: a systematic review and meta- analysis.International journal of circumpolar health · 2021Pooled it
- Reduced vagal modulations of heart rate during overwintering in Antarctica.Scientific reports · 2020Trial
- 25-Hydroxyvitamin DCommunications medicine · 2026Article
- Sex differences in stress and immune responses during confinement in Antarctica.Biology of sex differences · 2019Article
- Metabolic Responses to the Yukon Arctic Ultra: Longest and Coldest in the World.Medicine and science in sports and exercise · 2017Article
- Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III: The Gender Factor.PloS one · 2016Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeHumans in Antarctica face different environmental challenges, such as low ultra-violet radiation, which is crucial for vitamin D production in humans. Therefore we assessed changes in 25-OH-vitamin D serum concentration during 13 months of overwintering at the German Stations Neumayer II and III (2007-2012). We hypothesized that (i) 25-OH-vitamin D serum concentration would significantly decrease, (ii) changes would be affected by age, gender, baseline (i.e. pre-overwintering) fat mass, baseline 25-OH-vitamin D serum concentration, and station residence, and (iii) our results would not differ from similar previous studies in comparable high latitudes. MATERIALS &
methods25-OH-vitamin D serum concentrations were determined before, after, and monthly during the campaigns from venous blood samples of n = 43 participants (28 men, 15 women). Baseline fat mass was determined via bio impedance analysis and body plethysmography. Data were analyzed for change over time, dependency on independent parameters, and after categorization for sufficiency (>50nmol/l), insufficiency (25-50nmol/l), and deficiency (<25nmol/l). Results were compared with data from similar previous studies.
resultsWe found a significant decrease of 25-OH-vitamin D with dependency on month. Age, gender, fat mass, and station residence had no influence. Only baseline 25-OH-vitamin D serum concentrations significantly affected subsequent 25-OH-vitamin D values.
conclusionsOverwinterings at the Antarctic German research stations Neumayer II and III are associated with a decrease in 25-OH-vitamin D serum concentrations, unaffected by age, gender, baseline fat mass, and station residence. Higher baseline vitamin D serum concentrations might protect from subsequent deficiencies. Residence at the Neumayer Stations may lead to lower vitamin D serum concentrations than found in other comparable high latitudes.
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