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Dietary Arginine Supplement Assists Speed Cyclists Over Age 50.
Taking Arginine supplements can improve the cycling ability of athletes over age 50...
Researchers writing in BioMed Central
One way in which older people may reduce their exercise capacity revolves around the signaling molecule nitric oxide (NO), which is involved in many physiological processes, including those related to working out. Nitric Oxide production diminishes in quantity and its bio-availability as we age. It is associated with an increased prevalence of other cardiovascular risk factors. In the body, Nitric Oxide is created from the amino acid Arginine and is inactivated by oxygen free radicals. By supplementing diet with both the precursor and an anti-oxidant, the researchers hoped to support the Nitric Oxide system in the cyclists and thereby enhance performance.
Sixteen cyclists aged between 50 and 73 were randomly assigned to receive either the supplement or dummy placebo pills. After one week of study, the anaerobic threshold of the supplement group increased, while that of the control group did not significantly alter. This increase in anaerobic threshold was preserved at week three.
According to team of researchers,
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