Popow, W.; Sadkowska, P.; Jania, K.; Smolińska, K.; Kulczycka, J.; Ciołkosz, M.; Antczak, T.; Gajda-Bathelt, M.; Dąbek, M.; Perlicka, Z. A Review of the Influence of Vitamin D Deficiency on Muscle Strength and Exercise Performance in Adults. Qual Sport 2025, 43, 62325.