Stand beside a Smith machine with the bar set at a comfortable height and grip it with one hand. Bend your knees slightly and hinge at the hips while keeping your back flat. Pull the bar up toward your hip by engaging your back muscles, pause briefly at the top, then lower the bar with control. Maintain core engagement and a neutral spine throughout the movement.
Log your smith one arm row sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.