NDLI: Concussion induces gait inter-joint coordination variability under conditions of divided attention and obstacle crossing.

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Concussion induces gait inter-joint coordination variability under conditions of divided attention and obstacle crossing.

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Concussion induces gait inter-joint coordination variability under conditions of divided attention and obstacle crossing.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Chiu, Shiu-Ling Osternig, Louis Chou, Li-Shan
Description	Country affiliation: United States Author Affiliation: Chiu SL ( Motion Analysis Laboratory, Department of Human Physiology, University of Oregon, Eugene, OR 97403, USA.)
Abstract	This study investigated the effect of concussion on the pattern and variability of inter-joint coordination during level walking (Level), obstacle crossing (OB), and walking with a concurrent cognitive test (ATT). Gait analyses of 23 concussed and 23 matched healthy adults were performed. Continuous relative phase (CRP), derived from phase angles of two adjacent joints, was used to assess inter-joint coordination. Cross-correlation measures and root-mean-square (RMS) differences were used to compare CRP patterns of the Level condition to those of OB and ATT conditions, respectively. Deviation phase (DP) was used to evaluate variability of inter-joint coordination for each task. For hip-knee and knee-ankle CRP patterns, RMS differences between OB and Level and between ATT and Level in concussed subjects were significantly greater than those of healthy adults. No significant group differences were detected for the cross-correlation measures of hip-knee and knee-ankle CRP patterns. In stance phase, a significant task effect on DP values was detected in hip-knee inter-joint coordination. For knee-ankle inter-joint coordination, concussed subjects showed significantly greater DP values than healthy controls during OB and ATT. In swing phase, concussed individuals showed greater DP values in hip-knee and knee-ankle inter-joint coordination compared to healthy controls. The findings suggest that the ability to modulate inter-joint coordination patterns when accommodating to gait perturbations is affected by concussion.
File Format	HTM / HTML
ISSN	09666362
Issue Number	4
Volume Number	38
e-ISSN	18792219
Journal	Gait & Posture
Language	English
Publisher	Elsevier
Publisher Date	2013-09-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Psychomotor Performance Discipline Orthopedics Gait Complications Humans Attention Male Gait Disorders, Neurologic Journal Article Physiopathology Hip Joint Young Adult Ankle Joint Case-control Studies Biomechanical Phenomena Knee Joint Etiology Adolescent Adult Female Physiology Brain Concussion Joints
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Rehabilitation Biophysics Sports Science

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