Trunk strength testing with iso-machines. Part 2: Experimental evaluation of the Cybex II Back Testing System in normal subjects and patients with chronic low back pain

Spine (Phila Pa 1976). 1993 Jun 1;18(7):812-24.


This experimental evaluation of Cybex II isokinetic measurement was based on 70 normal subjects and 120 patients with chronic low back pain. It considered: reliability and learning effect; discrimination of individual patients versus normal subjects; relationship to clinical measures; assessment of effort; and a prospective 2-year follow-up of normal subjects to predict future low back pain.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Biomechanical Phenomena
  • Ergometry / instrumentation*
  • Evaluation Studies as Topic
  • Female
  • Follow-Up Studies
  • Humans
  • Isometric Contraction / physiology*
  • Low Back Pain / diagnosis*
  • Low Back Pain / epidemiology
  • Male
  • Middle Aged
  • Muscle Contraction / physiology*
  • Physical Exertion / physiology*
  • Reference Values
  • Sex Characteristics
  • Time Factors