Trial reportNutrients2022
Changes of 25(OH)D Concentration, Bone Resorption Markers and Physical Performance as an Effect of Sun Exposure, Supplementation of Vitamin D and Lockdown among Young Soccer Players during a One-Year Training Season.
Trial report in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
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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
19 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Effects of vitamin D3 supplementation on strength of lower and upper extremities in athletes: an updated systematic review and meta-analysis of randomized controlled trials.Frontiers in nutrition · 2024Pooled it
- Eight-Week Vitamin DNutrients · 2026Trial
- Screening performance of a lifestyle-based questionnaire score for vitamin D deficiency and related functional and physiological characteristics in older women.Physical activity and nutrition · 2026Article
- Vitamin D in Cardiovascular Medicine: From Molecular Mechanisms to Clinical Translation.Nutrients · 2026Review
- The Role of Vitamins and Micronutrients in the Prevention of Melanoma: A Review of Current Evidence.International journal of molecular sciences · 2026Review
- Association between 25(OH)D levels and clinical outcomes in patients infected with SARS-CoV-2: a cross-sectional study.Scientific reports · 2025Article
- Vitamin D deficiency and diabetic retinopathy risk in patients with newly diagnosed type 2 diabetes mellitus: a retrospective analysis.Frontiers in nutrition · 2025Article
- Article
- Confronting the global obesity epidemic: investigating the role and underlying mechanisms of vitamin D in metabolic syndrome management.Frontiers in nutrition · 2024Review
- Effects of Vitamin D Supplementation in Elite Athletes: A Systematic Review.Orthopaedic journal of sports medicine · 2024Review
- Comparative analysis of COVID-19 responses in Japan and Africa: diet, phytochemicals, vitamin D, and gut microbiota in reducing mortality-A systematic review and meta-analysis.Frontiers in nutrition · 2024Article
- The relationships of serum vitamin D concentration with linear speed and change of direction performance in soccer players.Frontiers in nutrition · 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
- Bone Health in Young Athletes: a Narrative Review of the Recent Literature.Current osteoporosis reports · 2023Review
- Evidence That Increasing Serum 25(OH)D Concentrations to 30 ng/mL in the Kingdom of Saudi Arabia and the United Arab Emirates Could Greatly Improve Health Outcomes.Biomedicines · 2023Review
- Association of bone mineralization markers with dietary nutrient intake in adolescents with and without biochemical osteomalacia.Frontiers in nutrition · 2023Article
- Vitamin D deficiency in athletes: Laboratory, clinical and field integration.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2022Review
- Correlation between the Positive Effect of Vitamin D Supplementation and Physical Performance in Young Male Soccer Players.International journal of environmental research and public health · 2022Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The main purpose of this research was to demonstrate the changes in 25(OH)D concentration, bone resorption markers, and physical fitness along the one-year training season in young soccer players. A total of 24 young soccer players (age: 17.2 ± 1.16 years, mass: 70.2 ± 5.84, height: 179.1 ± 4.26 cm) were tested at four different time points across one year (T1-September 2019; T2-December 2019; T3-May 2020; T4-August 2020). After T2 (during COVID-19 lockdown), players were divided into a supplemented (GS) group and a placebo group (GP). Variables such as 25(OH)D, calcium (Ca), phosphorus (P), parathyroid hormone (PTH), aerobic capacity, speed, and explosive power were measured. Analyses performed for all participants indicated significant changes in all selected blood markers and running speed. The highest values in 25(OH)D were noted during summertime in T1 and T4. After individuals were split into two groups, a two-factorial ANOVA demonstrated a significant time interaction for 25(OH)D, Ca, P, PTH, 30 m sprint, and counter-movement jump. Significant time x group effect was calculated for aerobic capacity. This study confirmed that 25(OH)D concentration varies between four seasons, with the greatest decreases in the low sunlight periods. Vitamin D supplementation did not cause a preventive and long-lasting effect of increasing the 25(OH)D concentration in the young soccer players.
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