Historical Examples. 1  The lower part of C bulkhead was doubled and was in the form of a cofferdam. 2  The whole was built in a cofferdam, quite dry, and the opening was a holiday. 3  And the night shift began to repair the cofferdam for old Jezebel had dropped suddenly back into her old trail.
A man is does a dumbbell pullover at the gym. Photo Credit Click_and_Photo/iStock/Getty Images. Dumbbell pullovers are a bit of an exercise anomaly in that they work two opposing muscles simultaneously: the chest and the back muscles.The chest muscles are the primary movers, but several muscles of the back assist during the movement.econdary Movers. The latissimus dorsi, which is a large back muscle that fans out from your upper arm bone to your spine and then extends down to your hip bone, assists during the pullover exercise. Several other muscles, including the rhomboids, rear delts and triceps, are also involved as secondary movers.
http://www.youtube.com/subscription_c... Watch More: http://www.youtube.com/Ehowfitness Straight-arm dumbbell pullovers work a wide variety of different parts of your body, including your chest. Find out how straight-arm dumbbell pullovers work the chest with help from a certified personal trainer in this free video clip. Expert: Tyler Tsujimoto Bio: Tyler Tsujimoto is a Certified Personal Trainer from the National Academy of Sports Medicine.