SACH-SAWCH

graphic envelopes of ‘normal’ taken from populations by AGE – melt away. Walking is about pendulums. We don't measure pendulums nor metronomes by their age. We want to know the distance from apex to center of mass. Stats from mixed populations muddy everything as so many body types in a population 'norm' would imply that there is wide tolerance for deviation in metronomes and pendulums. There is not. A normal comfortable stride length for an adult is 75% of stature [how far center of mass travels]. Those color bars on the floor are showing how far center of mass went projected onto the floor onto a foot-floor contact point which helps visualize how much of that foot travel actually made it to body progression.