Associations of Vitamin D Levels with Physical Fitness and Motor Performance; A Cross-Sectional Study in Youth Soccer Players from Southern Croatia
Vitamin D level is known to be a factor potentially influencing Dresses physical fitness, but few studies have examined this phenomenon among youth athletes.We aimed to evaluate the associations of vitamin D levels (as measured by 25-hydroxyvitamin D concentrations—25(OH)D) with various physical fitness and motor performance tests in youth footba