Sit at the machine with your chest against the pad and feet firmly placed. Grasp the handle with one hand and start with your arm extended. Pull the handle toward your torso while keeping your elbow close to your body and your back straight. Focus on squeezing your shoulder blade at the end of the movement, then slowly return to the starting position with control before switching sides.
Log your lever one arm seated row (seated row machine) sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.