DTerminator2's Review Of Ab Crunch Machine

Dec 20, 2010 6:30 AM: Most ab crunch machines have two serious flaws. One is the range of motion is poor so the abs are never in their fully stretched position so this does not allow for maximal muscle stimulation. The 2nd flaw is that most machines have you using your arms to move the weight. This leads to constant cheating....+See More Most ab crunch machines have two serious flaws. One is the range of motion is poor so the abs are never in their fully stretched position so this does not allow for maximal muscle stimulation. The 2nd flaw is that most machines have you using your arms to move the weight. This leads to constant cheating. The best type of machine has an adjustable chest pad (no arm handle bars) and a a range of motion adjuster that will allow you to recline to a negative postion so as to use the abs full range of motion. -See Less