The actometer: an evaluation of instrument applicability for chronic pain patients.

Journal Article (Journal Article)

Three experiments were conducted to determine the reliability and validity of an activity measurement device, the actometer, as an index of ambulation for chronic pain patients. In experiment I, correlations between yoked actometers during ambulation showed the instrument to be internally reliable. In experiment II, actometer readings covaried very strongly with distance, showing the device to be valid during single trial assessment. However, experiment III found the device to show poor reliability over time (i.e., substantial measurement variability for the identical distance on 3 separate days). The results suggest that, for the chronic pain population, the actometer may not be a useful instrument for reliably assessing changes in walking activity over time.

Full Text

Duke Authors

Cited Authors

  • Morrell, EM; Keefe, FJ

Published Date

  • March 1988

Published In

Volume / Issue

  • 32 / 3

Start / End Page

  • 265 - 270

PubMed ID

  • 3362564

International Standard Serial Number (ISSN)

  • 0304-3959

Digital Object Identifier (DOI)

  • 10.1016/0304-3959(88)90036-X


  • eng

Conference Location

  • United States