Comparison of Self-Report Versus Sensor-Based Methods for Measuring the Amount of Upper Limb Activity Outside the Clinic

摘要

ObjectiveTo compare self-reported with sensor-measured upper limb (UL) performance in daily life for individuals with chronic (≥6mo) UL paresis poststroke. DesignSecondary analysis of participants enrolled in a phase II randomized, parallel, dose-response UL movement trial. This analysis compared the accuracy and consistency between self-reported UL performance and sensor-measured UL performance at baseline and immediately post an 8-week intensive UL task-specific intervention. SettingOutpatient rehabilitation. ParticipantsCommunity-dwelling individuals with chronic (≥6mo) UL paresis poststroke (N=64). InterventionsNot applicable. Main Outcome MeasuresMotor Activity Log amount of use scale and the sensor-derived use ratio from wrist-worn accelerometers. ResultsThere was a high degree of variability between self-reported UL performance and the sensor-derived use ratio. Using sensor-based values as a reference, 3 distinct categories were identified: accurate reporters (reporting difference ±0.1), overreporters (difference >0.1), and underreporters (difference