“The aim of this study was to assess the relationship between vitamin D and physical performance in physically active children.”
“In conclusion, a low plasma 25-OHD level was associated with decreased muscle strength, agility, and jumping and sprinting abilities in physically active children.”

“Vitamin D inadequacy may limit exercise performance.”.

I.Bezrati, et al
Association of plasma 25-hydroxyvitamin D with physical performance in physically active children
Canadian Journal Of Applied Physiology — Volume 41 #11 — November 2016 — page 1124