AUTHOR=Krasniqi Ermira , Boshnjaku Arben , Wagner Karl-Heinz , Wessner Barbara TITLE=Exploring the impact of vitamin D-related genetic variants on muscular fitness changes in middle-aged and older adults in Kosovo JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1476492 DOI=10.3389/fpubh.2025.1476492 ISSN=2296-2565