Reliability and precision of in vivo scapular kinematic measurements using an electromagnetic tracking device

Joseph Myers, John Jolly, Takashi Nagai, Scott Lephart

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Context: In vivo scapular kinematics during humeral movements are commonly assessed with electromagnetic tracking devices despite few published data related to reliability and precision of these measurements. Objective: To determine the intrasession reliability and precision of assessing scapular kinematics using an electromagnetic tracking device. Design: Scapular position and orientation were measured with an electromagnetic tracking device during humeral elevation/depression in several planes. Intrasession reliability and precision were established by comparing 2 trials performed in succession. Setting: A human-movement research laboratory. Participants: 15 healthy individuals. Main Outcome Measures: Intrasession intraclass correlation coefficients and standard error of measurement of all scapular variables were established. Results: The mean intrasession reliability for all variables was ICC = .97 ± .03. The mean intrasession precision was .99° ± .36°. Conclusions: In vivo scapular kinematics can be measured with high reliability and precision during intrasession research designs.

Original languageEnglish
Pages (from-to)125-143
Number of pages19
JournalJournal of Sport Rehabilitation
Issue number2
StatePublished - Apr 2006


  • Biomechanics
  • Motion analysis
  • Shoulder

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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