Light-load training with a cuff partially limiting blood flow to build strength.
Blood Flow Restriction training uses a pneumatic cuff or band to partially restrict blood flow to a working limb while exercising with light loads (often 20–40% of one-rep max). It can produce strength and muscle gains similar to heavier lifting, which makes it useful in early rehabilitation when a joint cannot tolerate heavy load. Evidence for performance gains in healthy athletes is more mixed.