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.
When it's done right, the deadlift is an excellent back exercise. As you pick up and put down the weight, your upper-back musclesâincluding your rhomboids, traps, erector spinae, rear deltoids, and latsâmust fire on all cylinders to keep your torso straight and your lower back from rounding. It's when you fail to engage these muscles that injuries can occur.