Characterisation of rollator use using inertial sensors

Tsu Jui Cheng, Laurence Kenney, James David Amor, Sibylle Brunhilde Thies, Eleonora Costamagna, Christopher James, Catherine Holloway

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The use of walking aids is prevalent among older people and people with mobility impairment. Rollators are designed to support outdoor mobility and require the user to negotiate curbs and slopes in the urban environment. Despite the prevalence of rollators, analysis of their use outside of controlled environments has received relatively little attention. This Letter reports on an initial study to characterise rollator movement. An inertial measurement unit (IMU) was used to measure the motion of the rollator and analytical approaches were developed to extract features characterising the rollator movement, properties of the surface and push events. The analytics were tested in two situations: first, a healthy participant used a rollator in a laboratory using a motion capture system to obtain ground truth. Second, the IMU was used to measure the movement of a rollator being used by a user with multiple sclerosis on a flat surface, cross-slope, up and down slopes and up and down a step. The results showed that surface inclination and distance travelled measured by the IMU have close approximation to the results from ground truth; therefore, demonstrating the potential for IMU-derived metrics to characterise rollator movement and user's pushing style in the outdoor environment.

Original languageEnglish
Pages (from-to)303-309
Number of pages7
JournalHealthcare Technology Letters
Volume3
Issue number4
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Health Informatics
  • Health Information Management

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