Correlation between the Positive Effect of Vitamin D Supplementation and Physical Performance in Young Male Soccer Players

Michał Brzeziański, Monika Migdalska-Sęk, Aleksandra Czechowska, Łukasz Radzimiński, Zbigniew Jastrzębski, Ewa Brzeziańska-Lasota and Ewa Sewerynek
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Michał Brzeziański: Department of Endocrine Disorders and Bone Metabolism, Medical University of Lodz, 90-752 Lodz, Poland
Monika Migdalska-Sęk: Department of Biomedicine and Genetics, Medical University of Lodz, 92-213 Lodz, Poland
Aleksandra Czechowska: Academic Laboratory of Movement and Human Physical Performance, Medical University of Lodz, 92-213 Lodz, Poland
Łukasz Radzimiński: Department of Physiology and Biochemistry, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
Zbigniew Jastrzębski: Department of Physiology and Biochemistry, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
Ewa Brzeziańska-Lasota: Department of Biomedicine and Genetics, Medical University of Lodz, 92-213 Lodz, Poland
Ewa Sewerynek: Department of Endocrine Disorders and Bone Metabolism, Medical University of Lodz, 90-752 Lodz, Poland

IJERPH, 2022, vol. 19, issue 9, 1-17

Abstract: 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; n = 12; vitamin D 20,000 IU, twice a week) and the non-supplemented group (GN; n = 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 ( p = 0.002; ES = 0.36, large). A significant improvement in VO2max was found in the TG ( p = 0.0004) and the GS ( p = 0.031). Moreover, a positive correlation between 25(OH)D and VO2max (R = 0.4192, p = 0.0024) was calculated. The explosive power tests revealed insignificant time interactions in the average 10-jump height and average 10-jump power ( p = 0.07, ES = 0.13; p = 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 ( p = 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.

Keywords: vitamin D supplementation; 25(OH)D; skeletal muscle power; VO 2 max; football; soccer players (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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