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Updated: Feb 3, 2026
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Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
Published on: July 14, 2023
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Functional differences in upper limb movement after early and chronic stroke based on kinematic motion indicators.
Monika Blaszczyszyn1, Agnieszka Szczesna2, Jozef Opara3
1Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-758 Opole, Proszkowska 76, Poland.
Summary
This study analyzed upper limb movement in stroke survivors, finding significant differences in speed and smoothness between early and chronic stages. These kinematic changes highlight key recovery metrics post-stroke.
Area of Science:
- Neurorehabilitation
- Biomechanics
- Movement Science
Background:
- Ischemic stroke significantly impacts upper limb motor function.
- Understanding kinematic changes is crucial for effective rehabilitation strategies.
- Quantifying movement alterations aids in tracking recovery progress.
Purpose of the Study:
- To identify and quantify kinematic parameter changes in the upper limbs of ischemic stroke patients during functional tasks.
- To determine the most relevant kinematic alterations for assessing stroke recovery.
- To compare kinematic profiles between early and chronic stroke stages.
Main Methods:
- Motion capture using the OptiTrack system to analyze upper extremity function in Activities of Daily Living (ADL) tasks.
- Evaluation of kinematic parameters including mean/peak speed, normalized movement unit, normalized jerk, and phase movement time.
- Assessment of arm-trunk compensation and analysis of cylinder transport tasks in 20 stroke patients (early and chronic stages).
Main Results:
- Significant differences in mean and peak speed were observed for the paretic limb during cylinder transport between early (G1) and chronic (G2) stroke groups.
- The chronic stroke group (G2) exhibited rougher motion, indicating reduced smoothness, compared to the early group (G1).
- Distinct differences in arm-trunk compensation patterns were noted in the frontal plane.
Conclusions:
- The selected kinematic parameters effectively assess upper limb function in both early and chronic post-stroke periods.
- Quantitative kinematic analysis provides valuable insights into motor recovery after ischemic stroke.
- These findings support the use of kinematic assessments for monitoring stroke rehabilitation outcomes.
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