John,
In an earlier post I said I had videotaped a couple of squatting reps to check my form. And, in my last workout, I did the same for my trap bar deadlifts.
The execution of both exercises looked nearly identical, except I went deeper with the squats (I always drop below parallel).
My squatting technique:
-grab the bar with a wider-than shoulder width grip
-pull myself under the bar so that the bar rests on my lower traps/upper back area. I try to keep the bar as low on my back as I can without putting too much strain on my shoulders
-squeeze my scapula together and unrack the weight, taking one step back
-take one deep breath, further tense my upper back and lats by squeezing my scapula together tighter and "pulling down" on the bar with my hands to tense my lats.
-brace my entire midsection as tightly as possible
-I begin the descent by pushing my hips backwards (not down), being sure to keep a tight arch in my back
-I lower the weight until my thighs break parallel and drive the weight up, "partially" exhaling (not losing all my air so not to lose tension)
-repeat
My deadlifting technique:
-I get down, pushing my hips back, grasp the handles, keep my head up, back arched
-I then squeeze the handles, tighten my entire back, from my traps to my lower back, and apply some tension to my quads/glutes
-once my entire body is tense, from my feet on the floor to my grip on the bar, all the way up to my neck keeping my head up, I drive my hips forward and pull the weight up.
Now that I've written this down and actually visualize the whole process, the one obvious thing that jumps out at me is that in the bottom position of both lifts, I have much more overall-body-tension in the deadlift. For whatever reason, I am able to concentrate better on keeping everything braced as tightly as possible when reversing the movement in the bottom position.