Knee flexion during stance as a determinant of inefficient walking.

Abstract:

:A biomechanical analysis of normal walking assessed the mechanical work cost in joules per unit mass and distance walked. For 21 walking trials--seven subjects at slow, natural, and fast cadences--these work costs (min = .73 J/kg.m, max = 1.65 J/kg.m) were correlated with maximum knee flexion during stance (min=6 degrees, max=33 degrees). The results were contrary to the predictions of previous researchers who claimed that the energy cost would increase as the knee became more rigid during stance. This study showed a significant positive correlation between work cost and maximum knee flexion. The implications of these findings and the predicted increase of bone-on-bone forces as knee flexion increases are discussed relative to the gait training of certain patient populations.

journal_name

Phys Ther

journal_title

Physical therapy

authors

Winter DA

doi

10.1093/ptj/63.3.331

subject

Has Abstract

pub_date

1983-03-01 00:00:00

pages

331-3

issue

3

eissn

0031-9023

issn

1538-6724

journal_volume

63

pub_type

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