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Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation.
PLoS One. 2016; 11(10):e0164395.Plos

Abstract

Vitamin D does not only influence the musculoskeletal health and mineral homeostasis but it also affects cardiovascular, endocrine, nervous, immune and mental functions, thus it is of considerable importance for both physically active people and elite athletes. However, vitamin D deficiency is common worldwide and results from inadequate endogenous skin synthesis (insufficient ultraviolet B exposure) and diet. To improve the vitamin D status elite athletes often travel to lower latitude during winter. The aim of the study was to evaluate the seasonal vitamin D status in Polish elite athletes according to the sun exposure and oral supplementation. Serum concentration of 25-hydroxyvitamin D (25(OH)D) was measured in the years 2010-2014 in 409 elite athletes, who were divided into the following groups: OUTD-outdoor sports, represented by track and field athletes, who trained in Poland; IND-weightlifters, handball and volleyball players who trained indoors in Poland; SUN-track and field athletes who trained during Polish winter in lower latitude with high sunshine exposure; SUPL-track and field athletes who trained in Poland, had an inadequate vitamin D status (25(OH)D < 30 ng/ml) and were supplemented orally. Inadequate Vitamin D status was observed in 80% of OUTD and 84% of IND athletes in winter, whereas in summer the values amounted to 42% and 83%, respectively. The athletes exposed to sun in winter had significantly higher vitamin D concentration than OUTD group. Oral supplementation improved vitamin D concentration by 45%, whereas winter sun exposure caused its increase by 85%. Except for a few summer months an inadequate status of vitamin D was found in the majority of Polish elite athletes, with the deficiency level being similar to the one observed in non-athletic population. The most serious deficiency was observed in indoor disciplines. Adequate vitamin D status can be achieved by both increased sun exposure, especially in winter, and oral supplementation. Athletes should therefore routinely assess their vitamin D status and be educated how to approach their sunlight exposure, diet and supplementation.

Authors+Show Affiliations

National Center of Sports Medicine, Warsaw, Poland.Department of Applied Physiology, Mossakowski Medical Research Centre PAS, Warsaw, Poland.Department of Applied Physiology, Mossakowski Medical Research Centre PAS, Warsaw, Poland.Warsaw University of Technology, Faculty of Mechatronics, Institute of Metrology and Biomedical Engineering, Warsaw, Poland.National Center of Sports Medicine, Warsaw, Poland.Department of Applied Physiology, Mossakowski Medical Research Centre PAS, Warsaw, Poland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27732653

Citation

Krzywanski, Jaroslaw, et al. "Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation." PloS One, vol. 11, no. 10, 2016, pp. e0164395.
Krzywanski J, Mikulski T, Krysztofiak H, et al. Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation. PLoS One. 2016;11(10):e0164395.
Krzywanski, J., Mikulski, T., Krysztofiak, H., Mlynczak, M., Gaczynska, E., & Ziemba, A. (2016). Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation. PloS One, 11(10), e0164395. https://doi.org/10.1371/journal.pone.0164395
Krzywanski J, et al. Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation. PLoS One. 2016;11(10):e0164395. PubMed PMID: 27732653.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation. AU - Krzywanski,Jaroslaw, AU - Mikulski,Tomasz, AU - Krysztofiak,Hubert, AU - Mlynczak,Marcel, AU - Gaczynska,Ewa, AU - Ziemba,Andrzej, Y1 - 2016/10/12/ PY - 2016/04/12/received PY - 2016/09/23/accepted PY - 2016/10/13/entrez PY - 2016/10/13/pubmed PY - 2017/5/30/medline SP - e0164395 EP - e0164395 JF - PloS one JO - PLoS One VL - 11 IS - 10 N2 - Vitamin D does not only influence the musculoskeletal health and mineral homeostasis but it also affects cardiovascular, endocrine, nervous, immune and mental functions, thus it is of considerable importance for both physically active people and elite athletes. However, vitamin D deficiency is common worldwide and results from inadequate endogenous skin synthesis (insufficient ultraviolet B exposure) and diet. To improve the vitamin D status elite athletes often travel to lower latitude during winter. The aim of the study was to evaluate the seasonal vitamin D status in Polish elite athletes according to the sun exposure and oral supplementation. Serum concentration of 25-hydroxyvitamin D (25(OH)D) was measured in the years 2010-2014 in 409 elite athletes, who were divided into the following groups: OUTD-outdoor sports, represented by track and field athletes, who trained in Poland; IND-weightlifters, handball and volleyball players who trained indoors in Poland; SUN-track and field athletes who trained during Polish winter in lower latitude with high sunshine exposure; SUPL-track and field athletes who trained in Poland, had an inadequate vitamin D status (25(OH)D < 30 ng/ml) and were supplemented orally. Inadequate Vitamin D status was observed in 80% of OUTD and 84% of IND athletes in winter, whereas in summer the values amounted to 42% and 83%, respectively. The athletes exposed to sun in winter had significantly higher vitamin D concentration than OUTD group. Oral supplementation improved vitamin D concentration by 45%, whereas winter sun exposure caused its increase by 85%. Except for a few summer months an inadequate status of vitamin D was found in the majority of Polish elite athletes, with the deficiency level being similar to the one observed in non-athletic population. The most serious deficiency was observed in indoor disciplines. Adequate vitamin D status can be achieved by both increased sun exposure, especially in winter, and oral supplementation. Athletes should therefore routinely assess their vitamin D status and be educated how to approach their sunlight exposure, diet and supplementation. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/27732653/Seasonal_Vitamin_D_Status_in_Polish_Elite_Athletes_in_Relation_to_Sun_Exposure_and_Oral_Supplementation_ L2 - https://dx.plos.org/10.1371/journal.pone.0164395 DB - PRIME DP - Unbound Medicine ER -