hitting the block— measured automatically nor could we measure it this is positively associated with best times but is not a strong predictor, e.g. Shelly Ann has relatively mediocre reaction times but is the best—not expected to be correlated with knee symmetry 2—speed to achieve first 20 yards—this is e

this is the key variable in which knee symmetry is expected to show strong effects— the time for the sprinter to rise from near prone to near upright—Shelly Ann is known not to have the fastest reaction times but to be the fastest to reach 20m-after which she keeps pounding with her perfectly symmetrical kne