Barbell Row Variations (KNOW THE DIFFERENCE!) The barbell row engages all the muscles of your back to varying degrees, depending on your grip and pull technique. Using an underhand, narrow grip and pulling just below your belly button places greater emphasis on the latissimus dorsi. Opting for a medium-width grip and pulling towards just above your belly button targets the mid-back. Meanwhile, a wide grip and pulling towards your lower chest focuses on the upper back muscles. Size & Shred Traini