当前位置： SCI文献检索 > GAIT & POSTURE期刊下所有文献 > Adaptations in interlimb and intralimb coordination to asymmetrical loading in human walking.

Adaptations in interlimb and intralimb coordination to asymmetrical loading in human walking.

Abstract：

:The purpose of this study was to examine both the intralimb (within a limb) and interlimb (between the right and left limbs) adaptations that occur in response to a unilaterally applied leg load as subjects walked at their preferred walking speed. It was hypothesized that this adaptation would alter interlimb coordination while intralimb coordination remained invariant. Subjects (n = 12) were required to walk on a treadmill at preferred walking speed. Bilateral 3-D kinematic data were collected while a load placed on the leg was increased. Gait adaptations to leg-loading were assessed through changes in coordination patterns between specific limb couplings. Continuous relative phase (CRP) was used to evaluate changes in limb coordination under each experimental load condition compared to a no load baseline condition. Both changes in magnitude of CRP (root-mean-square (RMS) analysis) as well as temporal changes in CRP across the stride cycle (cross-correlation) were assessed. Cross-Correlation values changed with load for all interlimb couplings assessed suggesting alterations in interlimb coordination across the stride cycle. CRP cross-correlation values were close to 1.0 in all the intralimb couplings examined, showing a relative invariance in intralimb coordination. Coordination changes in RMS were also observed for the interlimb couplings. RMS changes were also observed in the intralimb couplings on the loaded side. It appears that gait adaptations to a unilaterally applied leg load appear both at the intralimb and interlimb level. However, the majority of changes did appear at the interlimb level, where CRP as assessed through both cross-correlation and RMS measures changed. This study supports previous results that suggested a tighter coupling exists at the intralimb level, leaving the majority of gait adaptations to occur at the interlimb level. The observed adaptation in differences between interlimb and intralimb coordination may provide insight into gait adaptations in pathological gait.

journal_name

Gait Posture

journal_title

Gait & posture

authors

Haddad JM,van Emmerik RE,Whittlesey SN,Hamill J

doi

10.1016/j.gaitpost.2005.05.006

subject

Has Abstract

pub_date

2006-06-01 00:00:00

pages

429-34

issue

eissn

0966-6362

issn

1879-2219

pii

S0966-6362(05)00110-4

journal_volume

pub_type

杂志文章

在线工具

Adaptations in interlimb and intralimb coordination to asymmetrical loading in human walking.