ArticleNutrients2016
Effect of 12-Week Vitamin D Supplementation on 25[OH]D Status and Performance in Athletes with a Spinal Cord Injury.
Article in Nutrients, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 4 of them syntheses that pooled it.
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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
23 citing papers in PubMed, 4 syntheses or guidelines pooled it, 47 citations in OpenAlex.
- The Prevalence of Low Vitamin D in Elite Para-Athletes: A Systematic Review.Sports medicine - open · 2024Pooled it
- Nutritional Strategies in the Rehabilitation of Musculoskeletal Injuries in Athletes: A Systematic Integrative Review.Nutrients · 2023Pooled it
- Impact of vitamin D on the prognosis after spinal cord injury: A systematic review.Frontiers in nutrition · 2023Pooled it
- Dietary Supplementation for Para-Athletes: A Systematic Review.Nutrients · 2021Pooled it
- Could creatine supplementation combined with physical rehabilitation accelerate return to play in athletes with patellar tendinopathy?Journal of the International Society of Sports Nutrition · 2026Trial
- Effects of vitamin D supplementation during autumn and winter on blood biomarkers and physical performance in runners and non runners.Scientific reports · 2026Trial
- Efficacy of Vitamin D3 Supplementation in Elevating Circulating 25(OH)D Concentration in Individuals With Chronic Spinal Cord Injury (VitD-SCI): Evidence From a Randomized, Double-Blind, Placebo-Controlled Trial.Topics in spinal cord injury rehabilitation · 2025Trial
- Energy Availability and Nutritional Intake during Different Training Phases of Wheelchair Athletes.Nutrients · 2023Trial
- Vitamin D supplementation attenuates oxidative stress in paraspinal skeletal muscles in patients with low back pain.European journal of applied physiology · 2018Trial
- Vitamin D3 supplementation enhances the effect of aerobic water-based training on physical fitness indices in obese and overweight menopausal women: A randomized controlled trial.Women's health (London, England)Trial
- Integrating polyphenols and exercise in cancer prevention, treatment, and rehabilitation: cellular and molecular mechanisms linking the injury-recovery-musculoskeletal resilience axis.Frontiers in oncology · 2026Review
- The effects of weekly or daily oral cholecalciferol use on muscle strength, muscle thickness, and functional independence in patients with spinal cord injury.Turkish journal of physical medicine and rehabilitation · 2025Article
- Seasonal variation of total and bioavailable 25-hydroxyvitamin D [25(OH)D] in the healthy adult Slovenian population.Acta biochimica Polonica · 2024Article
- The Role of Vitamins in Spinal Cord Injury: Mechanisms and Benefits.Oxidative medicine and cellular longevity · 2024Review
- Review
- Considerations for the Consumption of Vitamin and Mineral Supplements in Athlete Populations.Sports medicine (Auckland, N.Z.) · 2023Review
- Vitamin D supplementation in chronic spinal cord injury (VitD-SCI): study protocol for a randomised controlled trial.BMJ open · 2021Article
- Nutritional Considerations for Para-Cycling Athletes: A Narrative Review.Sports (Basel, Switzerland) · 2021Review
- miR-34a alleviates spinal cord injury via TLR4 signaling by inhibiting HMGB-1.Experimental and therapeutic medicine · 2019Article
- Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
(1)
backgroundstudies with able-bodied athletes showed that performance might possibly be influenced by vitamin D status. Vitamin D seems to have a direct impact on neuromuscular function by docking on vitamin D receptors in the muscle tissue. Additionally, a high prevalence of vitamin D deficiency was shown not only in infants and in the elderly but also in healthy adults and spinal cord injured individuals. Therefore, the aim of our study was to investigate whether a vitamin D dose of 6000 IU daily over 12 weeks would be sufficient to increase vitamin D status in indoor wheelchair athletes to a normal or optimal vitamin D level and whether vitamin D deficiency is associated with an impairment in muscle performance in these individuals; (2)
methodsvitamin D status was assessed in indoor elite wheelchair athletes in order to have a baseline measurement. If vitamin D status was below 75 nmol/L, athletes were supplemented with 6000 IU of vitamin D daily over 12 weeks. A vitamin D status over 75 nmol/L was supplemented with a placebo supplement. Vitamin D status, as well as a Wingate test and an isokinetic dynamometer test, were performed at baseline and after six and 12 weeks; (3)
results20 indoor elite wheelchair athletes participated in this double-blind study. All of these athletes showed an insufficient vitamin D status at baseline and were, therefore, supplemented with vitamin D. All athletes increased vitamin D status significantly over 12 weeks and reached an optimal level. Wingate performance was not significantly increased. Isokinetic dynamometer strength was significantly increased but only in the non-dominant arm in isometric and concentric elbow flexion; (4)
conclusiona dose of 6000 IU of vitamin D daily over a duration of 12 weeks seems to be sufficient to increase vitamin D status to an optimal level in indoor wheelchair athletes. It remains unclear, whether upper body performance or muscle strength and vitamin D status are associated with each other.
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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.