Consider Isokinetic Trunk Testing in your post offer assessment!
The link below is a research paper that I was involved in that was published in the Journal Of Spine Surgery and the International Society of the Study of Lumbar Spine (ISSLS), both recognized international spine organizations. The paper was also presented at the ISSLS 1992 Annual Meeting by Vert Mooney, MD. The testing was done at the Physical Assessment Center (PAR), a center I developed in Irvine at the Irvine Medical Center and was the home of all lines of isokinetic testing equipment.
The article supports the validation and predictive value of isokinetic testing. I have more articles on materials handling manual lifting as well.
Gary Jarvis, Managing Director