The table below comes from the 2011 Medicine and Science in Sports and Exercise study "2011 Compendium of Physical Activities: A Second Update of Codes and MET Values," by BE Ainsworth, WL Haskell, SD Hermann, N Meckes, DR Basset, Jr., C. Tudor-Locke, JL Greer, J Vezina, MC Whitt-Glover, and AS Leon.
bicycling, mountain, uphill, vigorous
bicycling, mountain, competitive, racing
bicycling, mountain, general
bicycling, <10 mph, leisure, to work or for pleasure ( 115)
sitting, teaching stretching or yoga, or light effort exercise class
standing tasks, light effort (e.g., bartending, store clerk, assembling, filing, duplicating, librarian, putting up a Christmas tree, standing and talking at work, changing clothes when teaching physical education, standing)