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Observational Study
. 2018 Jul 18;15(1):67.
doi: 10.1186/s12984-018-0409-4.

Recovery of kinematic arm function in well-performing people with subacute stroke: a longitudinal cohort study

Gyrd Thrane  1   2 , Margit Alt Murphy  3 , Katharina Stibrant Sunnerhagen  3   4
Affiliations
Observational Study

Recovery of kinematic arm function in well-performing people with subacute stroke: a longitudinal cohort study

Gyrd Thrane et al. J Neuroeng Rehabil. .

Abstract

Background: Most motor function improvements in people who have experienced strokes occur within the first 3 months. However, individuals showing complete or nearly complete arm function recovery, as assessed using clinical scales, still show certain movement kinematic deficits at 3 months, post-stroke. This study evaluated the changes in upper extremity kinematics, in individuals demonstrating minor clinical motor impairments, 3-12 months post-stroke, and also examined the association between kinematics and the subjects's self-perceived hand abilities during the chronic stage, 12 months post-stroke.

Methods: Forty-two subjects recovering from strokes and having Fugl-Meyer upper extremity motor assessment scores ≥60 were included from the Stroke Arm Longitudinal Study at the University of Gothenburg (SALGOT). Kinematic analyses of a drinking task, performed 3, 6, and 12 months post-stroke, were compared with kinematic analyses performed in 35 healthy controls. The Stroke Impact Scale-Hand domain was evaluated at the 12-month follow-up.

Results: There were no significant changes in kinematic performance between 3 and 12 months, post-stroke. The patients recovering from stroke showed lower peak elbow extension velocities, and increased shoulder abduction and trunk displacement during drinking than did healthy controls, at all time points. At 12 months, post-stroke, better self-perceived arm functions correlated with improved trunk displacements, movement times, movement units, and time to peak velocity percentages.

Conclusion: Kinematic movement deficits, observed at 3 months post-stroke, remained unchanged at 12 months. Movement kinematics were associated with the patient's self-perceived ability to use their more affected hand.

Trial registration: ClinicalTrials: NCT01115348 .

Keywords: Kinematics; Motor impairment; Movement analysis; Recovery; Stroke; Upper extremity.

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Conflict of interest statement

Ethics approval and consent to participate

The study was approved by the Regional Ethics Committee of Gothenburg (registration number 225/08, 318–04); written informed consent was obtained from the participants.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Figures

Fig. 1
Fig. 1
Study inclusion process and the samples taken for analysis
Fig. 2
Fig. 2
Change of endpoint variables between 3 and 12 months in post-stroke patients compared with healthy controls
Fig. 3
Fig. 3
Changes of the elbow, shoulder, and trunk variables between 3 and 12 months in post-stroke patients compared to healthy controls
See this image and copyright information in PMC

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