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Related Experiment Video

Updated: Jun 22, 2025

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors

Published on: May 2, 2021

Fatigue Is Associated With Perceived Effort and 2-Dimensional Reach Performance After Stroke.

Hui-Ting Goh¹, Jill Stewart, Kevin Becker

¹School of Physical Therapy, Texas Woman's University, Dallas, Texas (H.-T.G.); Physical Therapy Program, Department of Exercise Science. University of South Carolina, Columbus, South Carolina (J.S.); and Department of Kinesiology, Recreation, and Sport Studies. University of Tennessee, Knoxville, Tennessee (K.B.).

Journal of Neurologic Physical Therapy : JNPT

|June 27, 2024

Summary

Poststroke fatigue (PSF) increases perceived effort during arm reaching tasks after stroke. This fatigue also impacts reach performance, particularly with higher task demands.

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Area of Science:

Neurorehabilitation
Motor Control
Human Movement Science

Background:

Poststroke fatigue (PSF) is a common and debilitating symptom affecting daily activities.
High perceived effort is a key characteristic of PSF, but its impact on reaching is understudied.

Purpose of the Study:

To investigate how perceived effort changes during reaching tasks with varying demands in individuals post-stroke.
To determine the association between PSF, perceived effort during reaching, and actual reach performance.

Main Methods:

Thirty-six individuals with chronic stroke performed 2D reaching tasks with both arms under different conditions.
Perceived effort was measured using the Rating of Perceived Exertion (RPE) and Paas Mental Effort Rating Scale (MERS).
Reach kinematics quantified performance, and the Fatigue Severity Scale (FSS) assessed fatigue severity.

Main Results:

Perceived effort increased with the more affected arm, farther/smaller targets, and memory-guided reaching.
Both RPE and MERS scores correlated significantly with FSS scores.
FSS scores also correlated with movement time and reach performance discrepancies, with task demand modulating the fatigue-reach control relationship.

Conclusions:

Poststroke fatigue is linked to increased perceived effort during reaching tasks.
PSF is associated with impaired reach performance after stroke, offering insights into real-world arm function.