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.
EXERCISE 3 The Deadlift. The deadlift is probably the most neglected of the big three. It's a difficult movement and there's not always room at the gym to do it. But no other movement uses so many muscle groups, including the traps, lats, lower back, glutes, hamstrings, quads, and calves. Form is key to deadlifts as well.