Definition of cofferdam - a watertight enclosure pumped dry to permit construction work below the waterline, as when building bridges or repairing a ship. Definition of cofferdam - a watertight enclosure pumped dry to permit construction work below the waterline, as when building bridges or repairing a ship.
Named Muscles. The specific primary muscles used in a deadlift are the erector spinae, gluteus maximus, quadriceps, hamstrings and adductors. The secondary or stabilizing muscles are the trapezius, rhomboids, flexors, extensors, serratus anterior, rectus abdominus, transverse abdominus, gluteus medius/minimus, soleus and the gastrocnemius.
A basic deadlift uses back, buttock, hip and leg muscles to raise weights from a squatting position to standing erect. It works the primary muscles and secondary, or stabilizing, muscles in all of those areas. The move has less effect on arms as the arms are kept straight holding the weights -- either a barbell or dumbbells -- during the lift.