The barbell standing calf raise trains the calves, primarily the gastrocnemius, by rising onto the balls of your feet with a barbell across your upper back. Performing it with straight knees keeps the gastrocnemius under full load, and standing with a bar also demands core and balance control. Lifters use it to add direct calf work with equipment they already have, no calf machine required.
Log your barbell standing calf raise sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.