Beetroot juice increases exercise endurance
Bailey SJ et al. 2009. Dietary nitrate supplementation reduces the O2 cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans. J App Physiol Aug 6 (Epub ahead of print).
According to this small study the nitrate content in beetroot juice may be responsible for reducing oxygen uptake to a surprising extent, making exercise less tiring. Nitric oxide (NO), synthesized in the body from l-arginine by NO synthases, plays a role in adaptation to physical exercise by modulating blood flow, muscular contraction and glucose uptake and in the control of cellular respiration. Other studies have shown that NO can...