Quad workout by Ryan Sullivan of Sci-Unison Fitness featured in January 2012 Muscle & Fitness Magazine. Page 158.
When you pre-exhaust a muscle, you do single joint exercises before a multi-joint move for a given body part. This ensures that the targeted muscle is properly trained before you do the compound movement, which involves more muscle groups and potentially less focused stress. Now try post-exhaust or “aftershock” – the exact opposite of pre-exhaust, says New York-based trainer Ryan Sullivan (Sci-UnisonFitness.com). Do a set of 8-10 reps of leg presses to failure, then immediately switch to leg extensions for an additional 6-8 reps. Do this as your last working set only; don’t overuse this intensity booster. “By using post-exhaust you push the target muscle past the point of failure,” Sullivan says. “Supersetting compound and isolation exercises that hit same body part is a highly effective way to stimulate growth”