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?
Joanna JastrzębskaMaria SkalskaŁukasz RadzimińskiGuillermo F López SánchezLee HillKatja WeissBeat KnechtlePublished in: Journal of the International Society of Sports Nutrition (2023)
Current research confirmed the significant seasonal changes in 25(OH)D concentration during four seasons. 8-weekEight-week vitamin D supplementation had no extended effect on the level of 25(OH)D concentration.