Utilizing a slight arch is actually perfect form, there is less chance of certain types of training injury if one uses a slight back arch & keeps their muscles tight. I'm talking about a powerlifting arch, not a football player plyometric chest bounce that all the high school & college "tuff guys" use to prove how strong they are. One of my friends said, "yeah some dudes on our football team can squat over 700 and bench way over 500". He obviously doesn't realize that most football coaches don't test for 1rm. In an effort to make their team sound intimidating coaches will say "we've got 10 guys on our team who can squat 6-700" but what these rather unscrupulous coaches do is take the 225 lb bench press for reps and convert it to a 1 rm, so often you get "hmm joe over here can bench 225 12 times, that's about a 550 1rm".
I just get more than a little tired of football players who think that the ability to run down a field or pass a ball automatically carries over to fighting skill & makes them macho or something. Christ there are 150 lb amatuer nhb fighters who could tear the biggest nfl linemen a new arsehole in about 5 seconds, anyone who has seen the "toughman" competitions which showcased former pro football players can attest to their rather embarassing display of..."skill" . I am not disparaging football players at all and I understand that it is an extremely hard sport to play but I do get a little sick of the puerile attitude that many highschool & college "athletes" have.
kind regards,
jeremy