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.
Your Back and Beyond. Your erector spinae muscles are the target of the barbell deadlift exercise. These muscles have three heads and contribute to a series of neck and back movements. The erector spinae runs vertically from the sacrum of your lower back to your skull. Although the deadlift exercise targets the erector spinae, it also strengthens your gluteus maximus, quadriceps, calves, hamstrings, trapezius, rhomboids, abdominals and obliques.