Great talk, but at around 1:55, you say that "if we walked with straight legs, their COM would move up and down, which... is a waste of energy." In fact, the COM during walking DOES follow a regular up and down, sinusoidal path with each step. A person walking with straight legs mimics the dynamics of an inverted pendulum, which is energetically lossless. In fact, walking with a flat COM path costs MORE energy than walking with a sinusoidal one (See Kuo, Human Movement Science, 2007 for more).
Great talk, but at around 1:55, you say that "if we walked with straight legs, their COM would move up and down, which... is a waste of energy." In fact, the COM during walking DOES follow a regular up and down, sinusoidal path with each step. A person walking with straight legs mimics the dynamics of an inverted pendulum, which is energetically lossless. In fact, walking with a flat COM path costs MORE energy than walking with a sinusoidal one (See Kuo, Human Movement Science, 2007 for more).
jonmatthis 1 month ago
Great information to draw from.
janalyn629 6 months ago