Brunner, Friedrich, Elmar Kornexl, Hannes Kasnter, Clemens Drenowatz, and Klaus Greier. 2021. “Fitness Trend Analysis in Male Austrian Middle and High School Students from 1975 to 2010”. Current Issues in Sport Science (CISS) 6 (May):007. https://doi.org/10.36950/2021ciss007.