Fig. 1

Slow component (ΔVO2 mL . min− 1) analysis during the constant load test in: a Beetroot juice (J) experimental condition at first ventilatory threshold (VT1); b Placebo (PL) experimental condition at VT1 c Beetroot juice (BJ) experimental condition at second ventilatory threshold (VT2); d PL experimental condition at VT2. Data are provided as mean and standard deviation. There were no significant differences between both experimental conditions (BJ vs. PL) in VT1 and VT2