Underhand Yates row. A compound back and arm exercise. There is no target muscle. Many muscles of the arm and back work in synergy. Synergistic muscles: Upper and Middle Trapezius, Rhomboids, Latissimus Dorsi, Teres Major, Posterior Deltoid, Infraspinatus, Teres Minor, Biceps Brachii, Brachialis, Brachioradialis, and Sternal (Lower) Pectoralis Major. Visit site to learn the differences between the Yates row and the bent-over barbell row.