學院

醫學院

系所

職能治療學系

題名

Concurrent and predictive validity of arm kinematics with and without trunk restraint during a reaching task in stroke

作者

Li, K-Y., Lin, K-C., Chen, C-K., Liing, R-J., Wu, C-Y.*, & Chang, W-Y.

期刊名稱

Archives of Physical Medicine and Rehabilitation

發表日期

2015

著作性質

原著

語文

英文

關鍵字

concurrent validity, predictive validity, motor impairment, functional capacity, kinematic outcomes

摘要

Objective: This study examined the concurrent and predictive validity of measurements of kinematic variables in reaching tasks with and without a trunk constraint in individuals with stroke.

Design: Secondary data analysis from randomized controlled trials. Settings: Participants received training in the hospitals and assessments in the laboratory. Participants: 95 individuals with stroke enrolled in previous and ongoing clinical trials. Interventions: Upper limb training protocols were 90 to 120 minutes of intervention every weekday for 3 to 4 weeks.

Main Outcome Measures: Functional capacity was assessed by the Action Research Arm Test (ARAT) and motor impairment by the Fugl-Meyer Assessment for the Upper Extremities (FMA-UE). Movement kinematics were measured during a reaching task with and without a trunk constraint. We derived 5 end point control variables and 3 joint recruitment variables for estimating concurrent and predictive validity.

Results: The adjusted R² values for the constraint tasks ranged from .24 to .38 and for the unconstraint ones from .29 to .40. Movement time was the most prominent kinematic variable to the FMA-UE before and after the intervention (P < .05). For ARAT, movement time and end point displacement were the most significant variables pre and post intervention, respectively (P < .05).

Conclusions: Obtaining kinematic performance during an unconstrained task is appropriate and possibly sufficient to represent motor impairment and functional capacity of individuals with stroke. Movement time is the dominant variable associated with motor impairment and functional capacity, and end point displacement is unique to reflect functional capacity for individuals with stroke.