Low-volume, time-efficient high-intensity interval training (HIIT), which involves whole-body (WB) callisthenics exercises, has gained worldwide popularity in recent years. However, the physiological and perceptual impact of WB-HIIT comparison to specialised, equipment-based is relatively less studied. This study compared acute responses a single session WB-HIIT, ergometer-based HIIT (ERG-HIIT)...