title: A physiology based inverse dynamic analysis of human gait: potential and perspectives.
abstract: One approach to compute the musculotendon forces that underlie human motion is to combine an inverse dynamic analysis with a static optimisation procedure. Although computationally efficient, this classical inverse approach fails to incorporate constraints imposed by muscle physiology. The present paper reports on a physiological inverse approach (PIA) that combines an inverse dynamic analysis with a dynamic optimisation procedure. This allows the incorporation of a full description of muscle activation and contraction dynamics, without loss of computational efficiency. A comparison of muscle excitations and MT-forces predicted by the classical and the PIA is presented for normal and pathological gait. Inclusion of muscle physiology primarily affects the rate of active muscle force build-up and decay and allows the estimation of passive muscle force. Consequently, it influences the onset and cessation of the predicted muscle excitations as well as the level of co-contraction.
authors.affiliation: Department of Mechanical Engineering, Katholieke Universiteit Leuven, Leuven, Belgium. friedl.degroote@mech.kuleuven.be
authors.forename: F
authors.initials: F
authors.lastname: De Groote
authors.forename: G
authors.initials: G
authors.lastname: Pipeleers
authors.forename: I
authors.initials: I
authors.lastname: Jonkers
authors.forename: B
authors.initials: B
authors.lastname: Demeulenaere
authors.forename: C
authors.initials: C
authors.lastname: Patten
authors.forename: J
authors.initials: J
authors.lastname: Swevers
authors.forename: J
authors.initials: J
authors.lastname: De Schutter