Schnack, Tjorven, Michelle Slunecko, David Nader, Juliana Exel, and Arnold Baca. 2026. “Comparing Heart Rate Models for Characterization of Cardiorespiratory Fitness in Incremental Cycling Exercise: A Preliminary Study”. Current Issues in Sport Science (CISS) 11 (5): 036. https://doi.org/10.36950/2026.5ciss036.