Reliability of the Cybex Reactor in the assessment of an agility task

Jay Hertel, Craig R. Denegar, Phil D. Johnson, Sheri A. Hale, W. E. Buckley

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Two studies were performed to estimate the reliability of the Cybex Reactor in assessing agility tasks. In Study 1, participants (n = 13) underwent identical testing sessions twice in 1 week. In Study 2, participants (n = 13) underwent identical testing sessions twice in 1 week, once 3 weeks later, and once 6 weeks later. Testing sessions consisted of four identical agility tasks requiring participants to react to cues shown on a video monitor. In Study 1, intraclass correlation coefficients (ICC) were .47 for Day 1 and .75 for Day 2 for time to complete each task. Participants performed faster on Day 2 (p <.05). In Study 2, ICC ranged from .58 to .83. ICC between sessions ranged from .59 to .73. Participants performed significantly faster each successive session except between Weeks 3 and 6 (p < .05). The Reactor appears to be reliable in assessing agility tasks with test-retest intervals of up to 6 weeks.

Original languageEnglish (US)
Pages (from-to)24-31
Number of pages8
JournalJournal of Sport Rehabilitation
Volume8
Issue number1
DOIs
StatePublished - Feb 1999

All Science Journal Classification (ASJC) codes

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

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