i just got back from Ames, IA and the Iowa Track Clinic. Ken Harnden spoke about "Speed and Power Ingredients for Successful Sprinting". here is some of what he said…..
Acceleration (he called it "drive phase")
"arms make legs go"
"push down the track" during "drive phase"
"push the car" during drive phase (0-30m)
drive elbow back agressively – but don't let the arm open up (keep 90 angle)
Speed Improvement Menu (choose 3 or 4 per workout)
A's and B's
Seated Arm (90 angle)
SFS (he called it 30-30-30)
(heel-butt) high knee over low hurdles
he said no to overspeed (towing, downhill)
plyos (single leg hops over low hurdles, hurdle hop maize, depth jumps, stadium stairs)
he also gave a presentation on the "art of training the 400". i will try to post something later on that topic.