Grip strength comparison in immune-mediated neuropathies: Vigorimeter vs. Jamar

Thomas H. P. Draak*, Marielle H. J. Pruppers, Sonja I. van Nes, Els K. Vanhoutte, Mayienne Bakkers, Kenneth C. Gorson, W. -Ludo Van der Pol, Richard. A. Lewis, Nicolette C. Notermans, Eduardo Nobile-Orazio, Jean-Marc Leger, Peter Y. K. Van den Bergh, Giuseppe Lauria, Vera Bril, Hans Katzberg, Michael P. T. Lunn, Jean Pouget, Anneke J. van der Kooi, Leonard H. van den Berg, Pieter A. van DoornDavid R. Cornblath, Angelika F. Hahn, Catharina G. Faber, Ingemar S. J. Merkies

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The Jamar dynamometer and Vigorimeter have been used to assess grip strength in immune-mediated neuropathies, but have never been compared to each other. Therefore, we performed a comparison study between these two devices in patients with immune-mediated neuropathies. Grip strength data were collected in 102 cross-sectional stable and 163 longitudinal (new diagnoses or changing condition) patients with Guillain-Barre syndrome (GBS), chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), gammopathy-related polyneuropathy (MGUSP), and multifocal motor neuropathy (MMN). Stable patients were assessed twice (validity/reliability studies). Longitudinal patients were assessed 3-5times during 1year. Responsiveness comparison between the two tools was examined using combined anchor-/distribution-based minimum clinically important difference (MCID) techniques. Patients were asked to indicate their preference for the Jamar or Vigorimeter. Both tools correlated highly with each other (=0.86, p
Original languageEnglish
Pages (from-to)269-276
JournalJournal of the Peripheral Nervous System
Issue number3
Publication statusPublished - Sept 2015


  • grip strength
  • Jamar dynamometer
  • responsiveness comparison
  • Vigorimeter

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