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J Sci Med Sport. 2017 Jul;20(7):622-626. doi: 10.1016/j.jsams.2016.11.020. Epub 2017 Jan 24.

Single-task and dual-task tandem gait test performance after concussion.

Author information

1
The Micheli Center for Sports Injury Prevention, USA; Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, USA; Brain Injury Center, Boston Children's Hospital, USA.
2
Motion Analysis Laboratory, Department of Human Physiology, University of Oregon, USA.
3
Motion Analysis Laboratory, Department of Human Physiology, University of Oregon, USA. Electronic address: chou@uoregon.edu.

Abstract

OBJECTIVES:

To compare single-task and dual-task tandem gait test performance between athletes after concussion with controls on observer-timed, spatio-temporal, and center-of-mass (COM) balance control measurements.

DESIGN:

Ten participants (19.0±5.5years) were prospectively identified and completed a tandem gait test protocol within 72h of concussion and again 1 week, 2 weeks, 1 month, and 2 months post-injury. Seven uninjured controls (20.0±4.5years) completed the same protocol in similar time increments.

METHODS:

Tandem gait test trials were performed with (dual-task) and without (single-task) concurrently performing a cognitive test as whole-body motion analysis was performed. Outcome variables included test completion time, average tandem gait velocity, cadence, and whole-body COM frontal plane displacement.

RESULTS:

Concussion participants took significantly longer to complete the dual-task tandem gait test than controls throughout the first 2 weeks post-injury (mean time=16.4 [95% CI: 13.4-19.4] vs. 10.1 [95% CI: 6.4-13.7] seconds; p=0.03). Single-task tandem gait times were significantly lower 72h post-injury (p=0.04). Dual-task cadence was significantly lower for concussion participants than controls (89.5 [95% CI: 68.6-110.4] vs. 127.0 [95% CI: 97.4-156.6] steps/minute; p=0.04). Moderately-high to high correlations between tandem gait test time and whole-body COM medial-lateral displacement were detected at each time point during dual-task gait (rs=0.70-0.93; p=0.03-0.001).

CONCLUSIONS:

Adding a cognitive task during the tandem gait test resulted in longer detectable deficits post-concussion compared to the traditional single-task tandem gait test. As a clinical tool to assess dynamic motor function, tandem gait may assist with return to sport decisions after concussion.

KEYWORDS:

Balance; Concussion; Dual-task; Locomotion; Mild traumatic brain injury; Tandem gait

PMID:
28169147
DOI:
10.1016/j.jsams.2016.11.020
[Indexed for MEDLINE]

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