Treff, Gunnar, Judith Staudner, Xandro Bayer, Nikolaus Hautsch, Thorsten Möller, and Philipp Petersen. 2024. “An Updated Concept of the Polarization Index Enables the Integration of Three Intensity Zones in One Number and Identifies Polarized Training in an Extended Definition Range”. Current Issues in Sport Science (CISS) 9 (4):060. https://doi.org/10.36950/2024.4ciss060.