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2004

Biomechanical mechanism for transitions in phase and frequency of arm and leg swing during walking

9 years 8 months ago
Biomechanical mechanism for transitions in phase and frequency of arm and leg swing during walking
As humans increase walking speed, there are concurrent transitions in the frequency ratio between arm and leg movements from 2:1 to 1:1 and in the phase relationship between the movements of the two arms from in-phase to out-of-phase. Superharmonic resonance of a pendulum with monofrequency excitation had been proposed as a potential model for this phenomenon. In this study, an alternative model of paired pendulums with multiple-frequency excitations is explored. It was predicted that the occurrence of the concurrent transitions was a function of (1) changes in the magnitude ratio of shoulder accelerations at step and stride frequencies that accompany changes in walking speed and (2) proximity of these frequencies to the natural resonance frequencies of the arms modeled as a pair of passive pendulums. Model predictions were compared with data collected from 14 healthy young subjects who were instructed to walk on a treadmill. Walking speeds were manipulated between
Masayoshi Kubo, Robert C. Wagenaar, Elliot Saltzma
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2004
Where BC
Authors Masayoshi Kubo, Robert C. Wagenaar, Elliot Saltzman, Kenneth G. Holt
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