Vitamin D in Basketball Players: Current Evidence and Future Directions.

Autor:	Stojanović E; Faculty of Sport and Physical Education, University of Niš, Niš, Serbia.; Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia., Radovanović D; Faculty of Sport and Physical Education, University of Niš, Niš, Serbia., Hew-Butler T; Faculty of Exercise and Sport Science, Division of Kinesiology, Health and Sport Studies, Wayne State University, Detroit, Michigan., Hamar D; Faculty of Physical Education and Sport, Department of Sports Kinanthropology, Comenius University in Bratislava, Bratislava, Slovakia., Jakovljević V; Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia.; Department of Human Pathology, Moscow State Medical University IM Sechenov, Moscow, Russia.
Jazyk:	angličtina
Zdroj:	Sports health [Sports Health] 2022 May-Jun; Vol. 14 (3), pp. 377-388. Date of Electronic Publication: 2021 Jun 04.
DOI:	10.1177/19417381211019343
Abstrakt:	Context: Despite growing interest in quantifying and correcting vitamin D inadequacy in basketball players, a critical synthesis of these data is yet to be performed to overcome the low generalizability of findings from individual studies. Objective: To provide a comprehensive analysis of data in basketball pertaining to (1) the prevalence of vitamin D inadequacy; (2) the effects of vitamin D supplementation on 25-hydroxyvitamin D [25(OH)D] concentration (and its association with body composition), bone health, and performance; and (3) crucial aspects that warrant further investigation. Data Sources: PubMed, MEDLINE, ERIC, Google Scholar, SCIndex, and ScienceDirect databases were searched. Study Selection: After screening, 15 studies were included in the systematic review and meta-analysis. Study Design: Systematic review and meta-analysis. Level of Evidence: Level 3. Data Extraction: The prevalence of vitamin D inadequacy, serum 25(OH)D, body composition, stress fractures, and physical performance were extracted. Results: The pooled prevalence of vitamin D inadequacy for 527 basketball players in 14 studies was 77% ( P < 0.001; 95% CI, 0.70-0.84). Supplementation with 4000 IU/d and 4000 IU/wk (absolute mean difference [AMD]: 25.39 nmol/L; P < 0.001; 95% CI, 13.44-37.33), as well as 10,000 IU/d (AMD: 100.01; P < 0.001; 95% CI, 70.39-129.63) vitamin D restored 25(OH)D to normal concentrations. Body composition data revealed inverse correlations between changes in serum 25(OH)D (from pre- to postsupplementation) and body fat ( r = -0.80; very large). Data concerning positive impacts of vitamin D supplementation on bone health and physical performance remain sparse. Conclusion: The high proportion of vitamin D inadequacy underscores the need to screen for serum 25(OH)D in basketball players. Although supplementation restored vitamin D sufficiency, the beneficial effects on bone health and physical performance remain sparse. Adiposity can modulate 25(OH)D response to supplementation.
Databáze:	MEDLINE
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