Beetroot juice may boost heart blood flow and walking in leg artery disease

This phase 2 trial tests whether short-term consumption of concentrated beetroot juice, which is rich in inorganic nitrate, can improve blood flow to the heart and legs, and enhance walking performance in people with peripheral arterial disease (PAD). PAD causes leg pain during exercise due to reduced blood flow. Participants will consume either beetroot juice or a placebo that looks and tastes the same but has the nitrate removed. The study measures how long they can walk on a treadmill and changes in coronary blood flow during leg exercise.