A bent-over row (or barbell row) is a weight training exercise that targets a variety of back muscles. Which ones are targeted varies on form. The bent over row is often used for both bodybuilding and powerlifting. Implements There are several variants of this exercise, depending on whether dumbbells or a barbell is used and whether both arms are exercised at the same time: Two arm rows: Two arm barbell bent-over-row: This version uses both arms to lift a barbell to the stomach in a bent-forward position. The hands are kept pronated and the back straight. Two arm dumbbell bent-over-row: The barbell is replaced by two dumbbells, one for each hand. Pendlay row: named after Glenn Pendlay; the back is parallel to the ground and the weight lifted from the floor. Yates row: named after Dorian Yates; a row done with underhand grip and a slightly more upright torso than a regular row. One arm rows: One arm dumbbell bent-over-row: This exercise is frequently performed with one knee and one hand on the same side of the body braced on a bench with the back straight and parallel to the ground, and the other hand holding a weight with the arm extended. The weight is lifted towards the hip until elbow bends past 90° and the humerus is in line with the back, then lowered to the original position. One arm barbell bent-over row: Done in a nearly identical fashion as the one arm dumbbell, but with the added instability of a long bar. This necessitated greater work by the radial and ulnar flexors of the wrist to stabilize while pulling. It also gives greater feedback about the pronation and supination as the movement of the bar is very visible. Kroc row: Named after Matt Kroczaleski who popularised them, Kroc rows are one-arm, heavy weight and high repetition rows that often call for grip compensating straps at extremely heavy poundages up to around 300 lbs or 140 kg. Form variations The muscles emphasized in the pulling movement vary based on form: The latissimus dorsi muscle is best targeted with the elbow close to the torso, bringing it to the hip. It is assisted by the lower trapezius fibers in adducting the scapulae. The latissimus dorsi originate in fascia of the lower back, so the mass is pulled to a place closer to the pelvis. This reduces the amount of work