i've got 2 deadlift questions:
1) i have a very large back naturally, but i also have short arms. because of this i've lately tried training sumo-deadlift because of the shorter range of motion. however, the sumo-deadlift style does not allow me to take advantage of my big back. does the size of my back advantage outweigh the disadvantage of the length of my arms?!
2) proper deadlifting technique involves a tight lower back, if i'm not mistaken. i read recently an article that basically said once the weight gets to a certain point the lower back can and will round in order to get the weight off the floor. point being, getting the weight up no matter how, which seems contrary to what i've always learned.
my decision to switch to sumo was also the result of feeling rounding in my lower back at heavy weights, which is almost completely alleviated by sumo stance. however, i feel because the size of my back ultimately i'll be able to pull more conventional, but seemingly at the expense of rounding my lower back.
note that this rounding does not occur with lower weights. thanks in advance bros!