A tool designed to estimate equivalent free weight loads based on the weight displayed on a leg press machine. This calculation is necessary because the sled on a leg press travels on an angled track, reducing the actual weight being lifted. For example, if a user places 200 pounds on a leg press with a sled angle resulting in a 45-degree reduction, the effective weight lifted is significantly less than 200 pounds.
Understanding the effective weight provides a more accurate representation of the user’s strength and allows for better comparison against other exercises, such as squats. The adoption of these estimations enables more effective tracking of progress and informed adjustments to training programs. Historically, lifters relied on estimations or intuition; the formalization of weight adjustment formulas allows for more precise and consistent weight selection in the leg press.