The Cost of Preparing for the Boston Marathon. Running is free â and surprisingly cost-efficient in the long term. But if you need a little help, there are marathon training resources available for a price. According to a 2015 article by RunnersWorld.com, a running coach can cost $50 to $200 per month.
inhibitor. 1  a person or thing that inhibits. 2  Chemistry. a substance that decreases the rate of or stops completely a chemical reaction. 3  any impurity in a mineral that prevents luminescence. Compare activator (def 3). 4  Rocketry. an inert antioxidant used with solid propellants to inhibit burning on certain surfaces.
a molecule that prevents an enzyme from catalysing a reaction. Such inhibitors can compete with the normal substrate (see COMPETITIVE INHIBITION or can block the active site, preventing entry of the substrate (see NONCOMPETITIVE INHIBITION). Inhibition may be reversible or irreversible. Enzyme inhibitors often form part of a FEEDBACK MECHANISM to regulate a biochemical pathway.