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2023-01-16T04:07:14Z
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Necessary condition for forward progression in ballistic walking
Kagawa, Takahiro
Uno, Yoji
open access
This is the author's version of a work that was accepted for publication in Human Movement Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Human Movement Science. v.29, n.6, 2010, p.964–976, DOI:10.1016/j.humov.2010.03.007.
Ballistic walking
Body center of mass
Inverted pendulum
Phase portrait analysis
Ballistic walking requires an appropriate configuration of posture and velocity at toe-off to avoid backward falling. In this study, we investigated a determinant of the state of the body center of mass (COM) at the toe-off with regard to ballistic walking. We used an inverted pendulum model to represent ballistic trajectories and the necessary condition for forward progression by a simple relationship between the COM states (position and velocity) at toe-off. This condition was validated through a computer simulation of a 7-link musculoskeletal model and measurement experiments of human movements involving stepping and walking. The results of the model simulation were in good agreement with some of the results predicted by the inverted pendulum model. The measurement experiments of walking and stepping movements showed that most COM states at toe-off satisfied the condition for forward progression and the measured trajectories during single support phase were similar to the ballistic trajectories although humans are capable of walking in non-ballistic ways. These results suggested that the necessary condition for forward progression can predict the COM states at toe-off for efficient movement and for avoiding backward falling during single support phase.
Elsevier
2010-12
eng
journal article
AM
http://hdl.handle.net/2237/20762
https://nagoya.repo.nii.ac.jp/records/18666
https://doi.org/10.1016/j.humov.2010.03.007
0167-9457
Human Movement Science
29
6
964
976
https://nagoya.repo.nii.ac.jp/record/18666/files/HumMovSci2010.pdf
application/pdf
1.4 MB
2018-02-21