A fully automated, quantitative test of upper limb function.

Area of Science:

• Rehabilitation Engineering
• Neuroscience
• Clinical Assessment

Background:

• The ReJoyce workstation facilitates dexterous movement tasks through computer games for rehabilitation.
• Existing assessments like the Action Research Arm Test (ARAT) and Fugl-Meyer Assessment (FMA) have limitations.
• There is a need for a quantitative, automated, and objective measure of upper limb function.

Purpose of the Study:

• To evaluate the ReJoyce Arm and Hand Function Test (RAHFT) against established clinical assessments.
• To determine the concurrent and criterion validity, responsiveness, and reliability of the RAHFT.
• To establish the RAHFT as a comprehensive, automated alternative for arm and hand function evaluation.

Main Methods:

• The RAHFT was administered alongside the ARAT and FMA in 36 sessions with 13 individuals with tetraplegia.
• Concurrent and criterion validity were assessed through correlation with the ARAT (r2 = .88).
• Responsiveness was measured by effect size after 6 weeks of exercise (1.8), and reliability was assessed via test-retest difference (0.67% ± 3.6%).

Main Results:

• The RAHFT demonstrated strong concurrent and criterion validity, correlating highly with the ARAT.
• A significant effect size (1.8) indicated good responsiveness to exercise interventions.
• The RAHFT exhibited high reliability with no statistically significant test-retest difference and a lower ceiling effect compared to ARAT and FMA.

Conclusions:

• The RAHFT is a validated, quantitative, and automated tool for assessing arm and dexterous hand function.
• It serves as a reliable alternative to the ARAT and FMA, reducing reliance on human judgment.
• The RAHFT enables standardized, remote, and internet-administered outcome evaluations for individuals with tetraplegia.