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Virtual obstacle crossing: Reliability and differences in stroke survivors who prospectively experienced falls or no falls.

Abstract：

INTRODUCTION:Stroke survivors often fall during walking. To reduce fall risk, gait testing and training with avoidance of virtual obstacles is gaining popularity. However, it is unknown whether and how virtual obstacle crossing is associated with fall risk. AIM:The present study assessed whether obstacle crossing characteristics are reliable and assessed differences in stroke survivors who prospectively experienced falls or no falls. METHOD:We recruited twenty-nine community dwelling chronic stroke survivors. Participants crossed five virtual obstacles with increasing lengths. After a break, the test was repeated to assess test-retest reliability. For each obstacle length and trial, we determined; success rate, leading limb preference, pre and post obstacle distance, margins of stability, toe clearance, and crossing step length and speed. Subsequently, fall incidence was monitored using a fall calendar and monthly phone calls over a six-month period. RESULTS:Test-retest reliability was poor, but improved with increasing obstacle-length. Twelve participants reported at least one fall. No association of fall incidence with any of the obstacle crossing characteristics was found. DISCUSSION:Given the absence of height of the virtual obstacles, obstacle avoidance may have been relatively easy, allowing participants to cross obstacles in multiple ways, increasing variability of crossing characteristics and reducing the association with fall risk. CONCLUSION:These finding cast some doubt on current protocols for testing and training of obstacle avoidance in stroke rehabilitation.

journal_name

Gait Posture

journal_title

Gait & posture

authors

Punt M,Bruijn SM,Wittink H,van de Port IG,Wubbels G,van Dieën JH

doi

10.1016/j.gaitpost.2017.09.013

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

533-538

eissn

0966-6362

issn

1879-2219

pii

S0966-6362(17)30909-8

journal_volume

58

pub_type

杂志文章

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