The bent over barbell row is a staple exercise in many athletes back training sessions. The extension of the shoulder recruits the large latissimus dorsi (often referred to as the "lats"), the rear head of the deltoid and the teres major. The biceps are also worked as the arm flexes, more so when the athlete takes a supinated/underhand grip.
The athletes’ ability to handle weight whilst bent forward, as well as flexibility within the hamstrings can impact form. It is important to select a weight in which you can perform the exercise with sound form, avoiding jerking the weight up by using the hips.