Figure 1. Feeling scale (A), felt arousal scale (B), exercise enjoyment scale (C) and rating of perceived exertion (D) during the interval and recovery phases of the 70%HIIE (•), 85%HIIE (■) and 100%HIIE (♢). Where, W= work interval and R= recovery interval. * Significant difference between 70%HIIE and 85%HIIE. # Significant difference between 70%HIIE and 100%HIIE. ^ Significant difference between 85%HIIE and 100%HIIE.** Significant main effect for interval number. Error bars are presented as SD. See text for details.