Figure 3. Individual changes in maximum oxygen uptake (V̇O2max), O2 pulse (V̇O2/HR), first ventilatory threshold (VT1), second ventilatory threshold (VT2), cardiac output (Q̇max), and stroke volume (SV) in response to HIITRS, HIITTS, or CON. The percent changes from baseline (X-axes) are indicated by circles and horizontal bars represent the group mean response. † Significantly greater than pre-training value (P < 0.05). ‡ Significantly greater than HIITTS group; § Significantly greater than CON group.