Effect of age on lower extremity joint moment contributions to gait speed.

Abstract:

:We investigated the relationship of hip, knee and ankle function to gait speed in healthy elderly subjects. We hypothesized that the hip extension moment would make a significantly smaller contribution to propulsion power in the elderly than in healthy young subjects even when the elders were ambulating at speeds comparable to those of the young subjects. We analyzed the free speed gait of 16 young and 14 elderly subjects, and the fast gait of the elder subjects. In elderly subjects free speed gait linear power transfer from the leg to the upper body due to the hip and knee moments was decreased compared with young subjects walking at their normal gait speed. However, when asked to walk fast, elders significantly increase knee and hip moment contributions to hip linear power to levels comparable to those of young subjects at a similar speed. These results refute our hypothesis and support our earlier findings indicating that kinematic alterations at the hip are a cause of reduced gait speed in the elderly.

journal_name

Gait Posture

journal_title

Gait & posture

authors

Riley PO,DellaCroce U,Kerrigan DC

doi

10.1016/s0966-6362(01)00133-3

subject

Has Abstract

pub_date

2001-12-01 00:00:00

pages

264-70

issue

3

eissn

0966-6362

issn

1879-2219

pii

S0966636201001333

journal_volume

14

pub_type

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