Dietary nitrate supplementation in COPD: An acute, double-blind, randomized, placebo-controlled, crossover trial
Keywords: COPD, chronic obstructive pulmonary disease; ISWT, incremental shuttle walk test; NO, nitric oxide; O2, oxygen; NOS, nitric oxide synthase; PVD, peripheral vascular disease; h, hour; BRJ, beetroot juice; PL, placebo; ml, millilitre; min, minute; %SpO2, ar