[quote author="G-Riv10.57" date="1281747636"]My belief is that the drive phase should be natural, given your training, strength, and power. I see athletes sometimes try to “force” the drive phase by training to lean forward or lowering their head when they are already at MaxV (at least that the way it looks to me).
so how do u keep from popping up????[/quote]
I believe with adequate strength and power out the blocks, combined with the ability to leave the blocks at around 45 degrees will allow you to not “pop up early,” If your not strong and powerful enough then I believe the drive phase will be “cut short” meaning you will enter a transition phase earlier then other athletes who are more powerful/can apply more force into the ground. Maybe Josh or some other good 100m guys can give some of their experience with drive phase mechanics. Also if you did have a vid up of your start then maybe that can help. Maybe your doing some mechanical error that your unaware of (maybe your slightly leaning back or arms are perpendicular to the track during the set position). If you did have a vid then I would suggest a side view would be best for other elitetrackers to evaluate and give you feedback on. But in general, I just believe if you continue to work on acceleration from blocks (with proper technique of course), plyos, and proper strength and Olympic training, etc will help you improve.