A hydraulic ergometer for the human foot is described that can apply a
nkle rotations up to 1 rad at a constant high speed of 10-20 rad/s aga
inst moments up to 200 N m. The initial acceleration is damped, so as
not to exceed a preset value. With the presented set-up the series ela
sticity of the intact human m. triceps surae can be measured. Copyrigh
t (C) 1996 Elsevier Science Ltd.