If you can add any more information, be sure to head on over there.
i have checked with people who were around when the rules were written in the 60's and this number was just decided on...no one seems to know why though..
The whole idea that workouts have to be an hour or less (I've seen 40 minutes) seems to come from the assertion by Ivan Abadjaeve that testosterone drops in that time period... I've seen little in US research on the topic to supoprt the idea. The small acute hormonal effects seen during training (either direction) are probably pretty irrelevant which is what Shaf is getting at...sort of... The cortisol issue can more than be dealt with by sipping a carb and/or carb/protein drink throughout training.
it may have to do with fatigue, but what it mainly is, is your body putting the bar in the strongest position you can lockout much more weight with your elbows out over your face than you can with elbows in over your lower chest.
We all love strength training. We all love to lift weights. We all love the benefits and rewards of strength training. We all have something in common that separates us from the norm. We all wish good luck and success to others that share our love.
Thumbless grip has two disadvantages. One, you can't squeeze hard enough. Two, it's way too easy for it to fall forward and crush ya.
wraps actually contribute to knee pain and deterioration by pushing the kneecap inward. Also, I've experienced more tracking problems when wrapping for long periods than when not. There's a term for roughening of the underside of the kneecap - I think it's chondromalacia - and while I have no scientific study to point to, I believe that wraps potentially contribute to this problem.
Today lifting suits and bench shirts are commonplace in the world of powerlifting. But remember there was a day when they didn't exist. Sure other, more crude, devices were used. Go Heavy posters talk about the introduction of the Marathon Supersuit in the mid 1970's. It was the first squat suit made and marketed to the powerlifting community. Fast forward to today to witness the changes in powerlifting from this one introduction.
there are 2 differing types of sticking points... 1) An area of "muscle" weakness or less trained synergists. (lockout on a BP) 2) An area of bad leverages more or less at times an individual thing. (BP off the chest for a longer armed trainee)
do deadlift lockouts ...strengthen your back , start doin gm's if u dont already.....work on ur speed and use that momentum to help
Rack lockouts are ok... If you really want to bang up your lockout use reverse band.
The Canadian Powerlifting Union forum has a good basic discussion going on about how much water weight can be cut pre-competition without any accompanying strength loss. The general consensus is 3-5% is safe provided you have enough time to rehydrate. A few rehydration methods are also mentioned.
the pressure on the spine itself doesn't change. There is no compressive force applied to the spine. Regardless of flat back or not, you still have the same surface area directly under the bar load, specifically your upper back. When benching flat backed, only the center portion of your back takes the load, so less of your body is distributing the weight. When properly set up with the arch, shoulderblades pinched, traps retracted, you have much more body mass under the bar, which distributes the pressure of the bar over more tissues and bones. Remember, your body is 3-dimensional, you are talking about a flat plane here. Therefore, if your back is healthy, there is no danger from benching with an arch, regardless of the popular "personal trainer" advice.