MUD Mired in time...

Body progression is of two types. Continuous & halting. Halting flushes all energy in the system down the energy drain. If the center of mass moves steadily forward then the d istance to t ime graphs generate straight lines (slope depends on speed and the units used to measure distance. If the center of mass stops & starts, slows & speeds by lower resistance or is otherwise irregular then the progression graph forms steps as slowing flattens the curve. These are called “STEPPERS”. The straight continuous graph represents “ WALKERS ”. Walkers conserve and use energy and momentum. Steppers do not have efficient energy transfer in their recipe for ambulation and so jar from one island of stability to the next in step-wise progression. High energy usage is made worse if they have to also use active power to maintain anti-gravity to the stabilizing legs. So steppers need stability islands with reasonably easy allowance of initiation of a next step. AFOs can provide these stability islands if well thought out.