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.
Hereâs the break down of the names of the major muscle groups that the rack pull deadlift works: 1  Gluteus Maximus: (Butt) 2  Hamstrings: (Upper back of legs) 3  Trapezius, upper: (upper neck muscles)  Trapezius, middle: (middle neck 1  muscles) Rhomboids: ( upper inner back muscles right below your neck)  Erector Spinae (lower back)