Figure 5. Adaptive responses of maximal aerobic speed (MAS), maximal sprint speed (MSS), and anaerobic speed reserve (ASR) to high-intensity interval training using anaerobic speed reserve (HIIT_ASR), HIIT using finial velocity during 30-15_IFT test (HIITv_IFT), and HIIT using maximal aerobic speed (HIIT_MAS). Circles indicate individual percent change from baseline and the dashed line represents mean group response. ‡ Denotes significantly different versus pre-training (p ≤ 0.05).