Abstract：
INTRODUCTION:Walking instability is a contributor to falls and other undesired changes in walking performance. We investigated the effect of split-belt treadmill based perturbations on dynamic stability. Furthermore, we examined the relationships for dynamic stability and symmetry during unperturbed and perturbed walking. METHOD:Twenty healthy young adults completed unperturbed and perturbed walking conditions on a split-belt treadmill. The continuous perturbation involved moving the parallel belts at unequal speeds (1.5 m/s: 0.5 m/s). Margins of stability (MoS) and step length symmetry (SYM) were assessed. RESULTS:Stability and symmetry measures each decreased at the onset of the split walking perturbation. Only anterior-posterior (AP) MoS and SYM exhibited adaptive changes. Associations were found primarily for AP MoS with immediate changes in SYM at the onset of split walking, and over the duration of the split walking condition. DISCUSSION:Our findings suggest walking strategies were adapted to maintain dynamic stability when faced with a continuous perturbation. Additionally, dynamic stability was associated with symmetry during perturbed walking.
journal_name
Gait Posturejournal_title
Gait & postureauthors
Darter BJ,Labrecque BA,Perera RAdoi
10.1016/j.gaitpost.2018.03.006subject
Has Abstractpub_date
2018-05-01 00:00:00pages
86-91eissn
0966-6362issn
1879-2219pii
S0966-6362(18)30137-1journal_volume
62pub_type
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