The effect of divided attention on gait stability following concussion

Parker, Tonya M.; Osternig, Louis R.; Lee, Heng-Ju; Donkelaar, Paul; Chou, Li-Shan

doi:10.1016/j.clinbiomech.2004.12.004

Cited by 125 publications

(159 citation statements)

References 24 publications

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“…34,36 This finding is also in line with previous studies on gait/balance after grade 2 concussion, revealing an increase in ML sway during walking with divided attention within the first 48 h after experiencing neurological stress from head impact. 37,38 While the performance task in the current study was not dual in nature, our results suggest that similar mechanisms may underlie the deficits observed after both subconcussive and concussive impact.…”

Section: Subconcussive Head Impact Diminishes Lateral Balance Controlmentioning

confidence: 68%

Vestibular Dysfunction after Subconcussive Head Impact

Hwang

Lei

Kawata

et al. 2017

Journal of Neurotrauma

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Current thinking views mild head impact (i.e., subconcussion) as an underrecognized phenomenon that has the ability to cause significant current and future detrimental neurological effects. Repeated mild impacts to the head, however, often display no observable behavioral deficits based on standard clinical tests, which may lack sensitivity. The current study investigates the effects of subconcussive impacts from soccer heading with innovative measures of vestibular function and walking stability in a pre-0-2 h, post-24 h post-heading repeated measures design. The heading group (n = 10) executed 10 headers with soccer balls projected at a velocity of 25 mph (11.2 m/sec) over 10 min. Subjects were evaluated 24 h before, immediately after, and 24 h after soccer heading with: the modified Balance Error Scoring System (mBESS); a walking stability task with visual feedback of trunk movement; and galvanic vestibular stimulation (GVS) while standing with eyes closed on foam. A control group (n = 10) followed the same protocol with no heading. The results showed significant decrease in trunk angle, leg angle gain, and center of mass gain relative to GVS for the heading group compared with controls. Medial-lateral trunk orientation displacement and velocity during treadmill walking increased immediately after mild head impact for the heading group compared with controls. Controls showed an improvement in mBESS scores over time, indicating a learning effect, which was not observed with the heading group. These results suggest that mild head impact leads to a transient dysfunction in vestibular processing, which deters walking stability during task performance.

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Section: Subconcussive Head Impact Diminishes Lateral Balance Controlmentioning

confidence: 68%

Vestibular Dysfunction after Subconcussive Head Impact

Hwang

Lei

Kawata

et al. 2017

Journal of Neurotrauma

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show abstract

“…These studies also suggested that the effect of a concurrent task on walking depended on the type of task and its level of difficulty [1,7,8]. The effect of a concurrent task on walking was also found to be greater in elderly participants or in participants with postural control problems [8,9]. As yet, little is known about the dual-task effect in children.…”

Section: Introductionmentioning

confidence: 86%

The effect of a concurrent task on the walking performance of preschool children

et al. 2007

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“…For the counting backwards task [18,19], subjects were given a three-digit number and were asked to continuously subtract by 7 while walking on the specified track for 1 minute.…”

Section: Methodsmentioning

confidence: 99%

Dual task interference while walking in chronic stroke survivors

Shin

Choi

Lee

et al. 2017

PTRS

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Objective: Dual-task interference is defined as decrements in performance observed when people attempt to perform two tasks concurrently, such as a verbal task and walking. The purpose of this study was to investigate the changes of gait ability according to the dual task interference in chronic stroke survivors. Design: Cross-sectional study. Methods: Ten chronic stroke survivors (9 male, 1 female; mean age, 55.30 years; mini mental state examination, 19.60; onset duration, 56.90 months) recruited from the local community participated in this study. Gait ability (velocity, paretic side step, and stride time and length) under the single-and dual-task conditions at a self-selected comfortable walking speed was measured using the motion analysis system. In the dual task conditions, subjects performed three types of cognitive tasks (controlled oral word association test, auditory clock test, and counting backwards) while walking on the track. Results: For velocity, step and stride length, there was a significant decrease in the dual-task walking condition compared to the single walking condition (p<0.05). In particular, higher reduction of walking ability was observed when applying the counting backward task. Conclusions: Our results revealed that the addition of cognitive tasks while walking may lead to decrements of gait ability in stroke survivors. In particular, the difficulty level was the highest for the calculating task. We believe that these results provide basic information for improvements in gait ability and may be useful in gait training to prevent falls after a stroke incident.

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The effect of divided attention on gait stability following concussion

Cited by 125 publications

References 24 publications

Vestibular Dysfunction after Subconcussive Head Impact

Vestibular Dysfunction after Subconcussive Head Impact

The effect of a concurrent task on the walking performance of preschool children

Dual task interference while walking in chronic stroke survivors

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