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Ab Chair Deluxe2006
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Abdominial Exercise Workout What's Wrong With Sit-Ups? Traditional sit-ups emphasize sitting up rather than merely pulling your sternum down to meet your pelvis. The action of the psoas muscles, which run from the lower back around to the front of the thighs, is to pull the thighs closer to the torso. This action is the major component in sitting up. Because of this, setups primarily engage the psoas making them inefficient at exercising your abs. More importantly, they also grind the vertebrae in your lower back. They're inefficient because the psoas work best when the legs are close to straight (as they are when doing setups), so for most of the setup the psoas are doing most of the work and the abs are just stabilizing. The Abdominal Training Frequently Asked Questions list (FAQ) is intended as an introduction to the basic principles of training the abdominal area, sometimes known as the belly or the abs. The creation of this FAQ was motivated by frequent questions on the topic in the newsgroup misc.fitness. Ref. The Abdominal Training FAQ - More Information....
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