Originally Posted by
KONG
This makes absolutely no sense. You are thinking in terms of "feel" instead of biomechanics/physics. Pressure is a measure of force over an area.
Like hat said, the belt allows the lifter to increase IAP. How is this? the belt helps the internal surface area of the lower torso to remain unchanged as dynamic forces increase during the movement. The belt assists by helping increasing the contraction of the positional muscles of the torso.
This action is similar to looking down on a squat. By looking down the cervical spine in a neutral position which encourages a neutral position downstream in the lower back. Likewise, the belt increases contraction in the local musculature which encourages increased contraction of musculature upstream and downstream in areas that are tied in.
The outcome of better positional contraction is more efficient force transfer from the ground to the bar. Sure it seems "easier" but what it amounts to is better efficiency which always "feels" easier. Just like it "feels" easier to reach depth with your knees out on a squat, or it "feels" easier when the bar path is over the middle of the foot.
Just because something "feels" harder does not mean it is better. Efficient is better all day everyday.