Nitrate Formulations and Exercise Performance

this study compares the acute effects of Nitrate and Nitrate plus citrulline supplementation on physical performance in recreationally trained males and females. This is a cross-over within-participant comparison design concluding three arms (i) 600 mg of Nitrate (N), ii) 600 mg Nitrate and Citrulline (NC) and (iii) Placebo (PL). Conditions N, NC and PL will be tested one week apart, considering a minimum washout period of 72 hours. Dependent variables: * Number of completed repetitions to failure in squat using 75% of 1RM. * Ventilatory thresholds (VT1) and (VT2) and Vo2 max from a progressive to exhaustion running test (PGT) * Lactate post (within 1 min of having completed the PGT) * Rating of perceived exertion (RPE) by the Borg 6-to-20-point scale recorded every 2 min and at the end of the PGT. * Heart rate associated with VT1, VT2, and Vo2max - Heart rate maximum. * Maximal aerobic speed (MAS): calculated from the average speed of the last 2 minutes of the PGT. * time limit test at MAS (conducted after 15 min of having completed the PGT)