This study from College of Medicine and College of Health and Human Performance, University of Florida, Gainesville, Florida investigates how training and detraining effects lumbar extension strength.
This research project which involved patients in the Orthomed program at the University of California San Diego studied the efficacy of a conditioning program using the MedX Lumbar Extension Machine. The study tracked back strength, lift capacity, self-perception, pain rating, and activity level.
This study is from a physical therapy research paper which examines the impact of isometric lumbar extension torque across 12- and 20-week periods. Participants were put into 5 training groups after completing the 12- or 20-week training. The participants were tested in a seated position at 7 different angles at a 72-degree range of motion (ROM).