FIELD VERSUS LABORATORY TESTING IN SPORTS BIOMECHANICS: SYSTEM AND MODELLING ERRORS

  • Bruce Elliott
  • Jacqueline Alderson
  • Eliot Denver
Keywords: measurement error, data validity, motion analysis

Abstract

The sport biomechanist is often challenged to ‘test performance’ during competition and not in the laboratory environment. While ecological validity of data must always be of concern, measurement error (both system, and modelling) and the characteristics of equipment used (manual or automatic?), often mean that data are collected under ‘simulated match’ conditions. This paper will review the vexing question of laboratory versus field testing from a biomechanical perspective. Current data suggest that for movements involving out of plane rotations, laboratory testing with an opto-reflective system (cluster based model), provides a more accurate measure of elbow angle when compared with the same angle collected with a video-based system (vector model) during a simulated cricket bowling task.
Published
2007-11-09