Reactivity to accelerometer measurement of youth with moderate and severe intellectual disabilities

Background Reactivity occurs when research participants alter their behaviours due to the awareness of being monitored, which is a concern with using wearable devices to measure physical activity. The purpose of this study was to examine reactivity to accelerometer measurement among youth with moderate and severe intellectual disabilities (ID). Methods A sample of 175 youth with ID (108 with moderate and 67 with severe ID) was recruited from...