Why do powerlifters use lifting belts?
Show answer & explanation
Answer: Increases intra-abdominal pressure
Belts strengthen back muscles — Wrong. Belts don't build muscles. They provide external cue for bracing core—increases intra-abdominal pressure supporting spine during heavy lifts.
Increases intra-abdominal pressure ✓ — Correct! Core pressurization! Lifting belt worn tight around waist. During lift: exhale against closed glottis (Valsalva maneuver) while pushing abs against belt. Creates intra-abdominal pressure—rigid cylinder supporting spine. Benefits: (1) Spinal stability under heavy loads. (2) Slight performance increase (~5-15% for some lifters). (3) Proprioceptive cue—reminds to brace core. Not needed for all exercises—primarily squats, deadlifts. Doesn't replace core strength—supplement, not substitute!
Improves posture permanently — Wrong. Belts are temporary support during lifts, don't improve posture long-term. They increase abdominal pressure for spinal stability when lifting.