Seasonal variation in vitamin d status in elite athletes: a longitudinal study
Journal article
Backx, E. M.P., van der Avoort, Cindy van, Tieland, Michael, Maase, K., Kies, A. K., Van Loon, Luc, de Groot, Lisette C.P.G.M. and Mensink, M.. (2017). Seasonal variation in vitamin d status in elite athletes: a longitudinal study. International Journal of Sport Nutrition and Exercise Metabolism. 27(1), pp. 6 - 10. https://doi.org/10.1123/ijsnem.2016-0177
Authors | Backx, E. M.P., van der Avoort, Cindy van, Tieland, Michael, Maase, K., Kies, A. K., Van Loon, Luc, de Groot, Lisette C.P.G.M. and Mensink, M. |
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Abstract | Studies monitoring Vitamin D status in athletes are seldom conducted for a period of 12 months or longer, thereby lacking insight into seasonal fluctuations. The objective of the current study was to identify seasonal changes in total 25-hydroxyVitamin D (25(OH)D) concentration throughout the year. Fifty-Two, mainly Caucasian athletes with a sufficient 25(OH)Dconcentration ( > 75 nmol/L) in June were included in this study. Serum 25(OH)D concentration was measured every three months (June, September, December, March, June). In addition, Vitamin D intake and sun exposure were assessed by questionnaires at the same time points. Highest total 25(OH)D concentrations were found at the end of summer (113 ± 26 nmol/L), whereas lowest concentrations were observed at the end of winter (78 ± 30 nmol/L). Although all athletes had a sufficient 25(OH)D concentration at the start of the study, nearly 20% of the athletes were deficient ( < 50 nmol/L) in late winter. |
Keywords | 25(OH)D; sports nutrition |
Year | 2017 |
Journal | International Journal of Sport Nutrition and Exercise Metabolism |
Journal citation | 27 (1), pp. 6 - 10 |
Publisher | Human Kinetics, Inc. |
ISSN | 1526-484X |
Digital Object Identifier (DOI) | https://doi.org/10.1123/ijsnem.2016-0177 |
Scopus EID | 2-s2.0-85018669841 |
Page range | 6 - 10 |
Research Group | Mary MacKillop Institute for Health Research |
Publisher's version | File Access Level Controlled |
Place of publication | United States |
Editors | R. J. Maughan |
https://acuresearchbank.acu.edu.au/item/8558q/seasonal-variation-in-vitamin-d-status-in-elite-athletes-a-longitudinal-study
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