Format

Send to

Choose Destination
See comment in PubMed Commons below
J Theor Biol. 1997 Jun 21;186(4):467-76.

A theory of metabolic costs for bipedal gaits.

Author information

1
Department of Biology, University of Leeds, U.K.

Abstract

A simple model predicts the energy cost of bipedal locomotion for given speed, stride length, duty factor and shape factor. (The duty factor is the fraction of stride duration, for which a foot is on the ground, and the shape factor describes the pattern of force exerted on the ground). The parameters are varied to find the gait that minimizes metabolic energy cost, for each speed. A previous model by Alexander calculated the work that muscles have to do, but the metabolic cost (calculated in this paper) is more likely to be the principal criterion for gait selection. This model gives good predictions of human stride lengths, and of the speed at which we break into a run. It predicts lower duty factors and higher shape factors than are normally used, but the relationships between these gait parameters and speed parallel the empirical relationships.

PMID:
9278722
DOI:
10.1006/jtbi.1997.0407
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center