Assessment of lower arm movements using one inertial sensor

Fokke B. van Meulen, Bert-Jan F. van Beijnum, Jaap H. Buurke, Peter H. Veltink

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

14 Citations (Scopus)


Reduction of the number of sensors needed to evaluate arm movements, makes a system for the assessment of human body movements more suitable for clinical practice and daily life assessments. In this study, we propose an algorithm to reconstruct lower arm orientation, velocity and position, based on a sensing system which consists of only one inertial measurement unit (IMU) to the forearm. Lower arm movements were reconstructed using a single IMU and assuming that within a measurement there are moments without arm movements. The proposed algorithm, together with a single IMU attached to the forearm, may be used to evaluate lower arm movements during clinical assessments or functional tasks. In this pilot study, reconstructed quantities were compared with an optical reference system. The limits of agreement in the magnitude of the orientation vector and the norm of the velocity vectors are respectively 4.2 deg (normalized, 5.2 percent) and 7.1 cm/s (normalized, 5.8 percent). The limit of agreement of the difference between the reconstructed positions of both sensing systems were relatively greater 7.7 cm (normalized, 16.8 percent).

Original languageEnglish
Title of host publication2017 International Conference on Rehabilitation Robotics, ICORR 2017
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)978-1-5386-2296-4
Publication statusPublished - Jul 2017
Externally publishedYes


  • Accelerometry/instrumentation
  • Algorithms
  • Biomechanical Phenomena/physiology
  • Forearm/physiology
  • Humans
  • Pilot Projects
  • Signal Processing, Computer-Assisted
  • Task Performance and Analysis
  • Wrist/physiology


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