LOL, i gotta get my avatar changed.
now im gonna get an email from the Commandant of the Marine Corps....hmmm...maybe there is another job opportunity there. going back in as fitness advisor to the Commandant
back to business.
ok, with some of the things bfold said, i will concede. IF, your competition allows it, why not add a bit more stability to your lift. IF, everyone commenting to "use the belt" had read the articles i posted, they would know that the abs will travel out upon maximum lifts, but they will do so under eccentric control of the TVA and NOT by being "pushed out deliberately". (those lost, read the article) but this isnt to say that training to maintain TVA control shouldnt be paramount. on competition day, the use of a belt WITH full TVA activation will allow for now increased spinal stability and intra abdominal pressure, thereby increasing your core stability. full on pushing out of the abs is
relying on the belt and generally means less abdominal control. strength athlete or no, its a functional stabilization pattern that gets reversed with sedentary people, uninformed athletes and powerlifters. we unlearn it basically. as a child, it is still instinct.
so to cap it up. if you want to use said belt to help on competition day, fine. but dont neglect the other X amount of times you do your lifts to actually strengthen yourself functionally and protect your spine.
as for the argument of strengthening the weak part and continuing to use supports or straps. think about it this way, do you get better at shot putting by doing shoulder presses or practicing the movement. work the movement as a whole to increase the capabilities of all the muscles in the complex. want to get better at squats, squat. want to be able to hang on doing pullups, then hang on. that doesnt mean that other exercises wont hasten your progress but the specific movment itself is the best training to progress.