AUTHOR=Luebbers Paul E. , Kriley Luke M. , Eserhaut Drake A. , Andre Matthew J. , Butler Michael S. , Fry Andrew C. TITLE=Salivary testosterone and cortisol responses to seven weeks of practical blood flow restriction training in collegiate American football players JOURNAL=Frontiers in Physiology VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2024.1507445 DOI=10.3389/fphys.2024.1507445 ISSN=1664-042X