Emilija Stojanović1,2, Dragan Radovanović1, Tamara Hew-Butler3, Dušan Hamar4, Vladimir Jakovljević2,5. 1. Faculty of Sport and Physical Education, University of Niš, Niš, Serbia. 2. Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia. 3. Faculty of Exercise and Sport Science, Division of Kinesiology, Health and Sport Studies, Wayne State University, Detroit, Michigan. 4. Faculty of Physical Education and Sport, Department of Sports Kinanthropology, Comenius University in Bratislava, Bratislava, Slovakia. 5. Department of Human Pathology, Moscow State Medical University IM Sechenov, Moscow, Russia.
Abstract
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.
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.
Entities:
Keywords:
25(OH)D; vitamin D deficiency; vitamin D insufficiency; vitamin D supplementation
Authors: M W Kakanis; J Peake; E W Brenu; M Simmonds; B Gray; S L Hooper; S M Marshall-Gradisnik Journal: Exerc Immunol Rev Date: 2010 Impact factor: 6.308
Authors: Jenna E Heller; Joi J Thomas; Bruce W Hollis; D Enette Larson-Meyer Journal: Int J Sport Nutr Exerc Metab Date: 2014-07-14 Impact factor: 4.599
Authors: Richard J Allison; Graeme L Close; Abdulaziz Farooq; Nathan R Riding; Othman Salah; Bruce Hamilton; Mathew G Wilson Journal: Eur J Prev Cardiol Date: 2014-01-07 Impact factor: 7.804
Authors: A Catharine Ross; JoAnn E Manson; Steven A Abrams; John F Aloia; Patsy M Brannon; Steven K Clinton; Ramon A Durazo-Arvizu; J Christopher Gallagher; Richard L Gallo; Glenville Jones; Christopher S Kovacs; Susan T Mayne; Clifford J Rosen; Sue A Shapses Journal: J Clin Endocrinol Metab Date: 2010-11-29 Impact factor: 5.958