Twenty Years Of Specific, Isolated Lumbar Extension Research: A Review

Dave Smith, Stewart Bruce-Low, Gary Bissell

Research output: Contribution to journalArticlepeer-review


This paper discusses research findings relating of the use of the machine that provides isolated, specific exercise and testing for the muscles that extend the lumbar spine (lumbar extension machine, MedX, Ocala , FL ). The function of the machine is explained, and its reliability and validity examined. The effects of various lumbar extension training protocols on lumbar strength and low back pain are then explored, and practical implications and future research directions discussed. We conclude that that the lumbar extension machine provides reliable and accurate measures of lumbar extension strength and can produce very large increases in low back strength in a relatively short time period. Perhaps more importantly given the huge costs of low back problems, it is a very effective tool for preventing or eliminating low back pain in most chronic patients.
Original languageEnglish
Article numbere14
JournalJournal of Orthopaedics
Issue number1
Publication statusPublished - 2008
Externally publishedYes


Dive into the research topics of 'Twenty Years Of Specific, Isolated Lumbar Extension Research: A Review'. Together they form a unique fingerprint.

Cite this