Department of Endocrine Disorders and Bone Metabolism, Medical University of Lodz, 90-752 Lodz, Poland.
Academic Laboratory of Three-Dimensional Anthropometry, Medical University of Lodz, 92-213 Lodz, Poland.
Int J Environ Res Public Health. 2022 Apr 23;19(9):5138. doi: 10.3390/ijerph19095138.
The aim of this study was to determine whether supplementation with vitamin D during eight weeks of high-intensity training influences muscle power and aerobic performance in young soccer players. A total of 25 athletes were divided into two groups: the supplemented group (GS; = 12; vitamin D 20,000 IU, twice a week) and the non-supplemented group (GN; = 13). A set of measurements, including sprint tests, explosive power test, maximal oxygen uptake (VO2max), and serum 25(OH)D concentration, were obtained before (T1) and after (T2) the intervention. A significant group x time interaction was found in the 25(OH)D serum levels ( = 0.002; ES = 0.36, large). A significant improvement in VO2max was found in the TG ( = 0.0004) and the GS ( = 0.031). Moreover, a positive correlation between 25(OH)D and VO2max (R = 0.4192, = 0.0024) was calculated. The explosive power tests revealed insignificant time interactions in the average 10-jump height and average 10-jump power ( = 0.07, ES = 0.13; = 0.10, ES = 0.11, respectively). A statistically insignificant trend was observed only in the group-by-time interaction for the sprint of 10 m ( = 0.05; ES = 0.15, large). The present study provides evidence that vitamin D supplementation has a positive but trivial impact on the explosive power and locomotor skills of young soccer players, but could significantly affect their aerobic performance.
本研究旨在确定在 8 周高强度训练期间补充维生素 D 是否会影响年轻足球运动员的肌肉力量和有氧表现。共有 25 名运动员被分为两组：补充组（GS；n = 12；维生素 D 20,000 IU，每周两次）和非补充组（GN；n = 13）。在干预前后（T1 和 T2），进行了一系列测量，包括冲刺测试、爆发力测试、最大摄氧量（VO2max）和血清 25（OH）D 浓度。血清 25（OH）D 水平存在显著的组间×时间交互作用（ = 0.002；ES = 0.36，大）。在 TG（ = 0.0004）和 GS（ = 0.031）中，VO2max 显著提高。此外，计算出 25（OH）D 与 VO2max 之间存在正相关关系（R = 0.4192， = 0.0024）。爆发力测试显示，平均 10 次跳跃高度和平均 10 次跳跃功率的时间交互作用不显著（ = 0.07，ES = 0.13； = 0.10，ES = 0.11，分别）。仅在 10 米冲刺的组间×时间交互作用中观察到统计学上不显著的趋势（ = 0.05；ES = 0.15，大）。本研究提供的证据表明，维生素 D 补充对年轻足球运动员的爆发力和运动技能有积极但微不足道的影响，但可能会显著影响他们的有氧表现。
