http://agecon.uwyo.edu/riskmgt/humanrisk/ProperLiftingPush&PulltoPreventStrainSprains&Lowerpdf.pdf

This document provides information on back injury prevention. It discusses the issue of back pain and injury caused by improper lifting, pushing and pulling. It describes the prevalence and cost of back injury to the United States workforce. Includes explanation of the cause of back injuries, as well as, includes both text and illustrations to outline back exercises.