Effects of a Lumbar Support Cushion in a Backpack on Postural Alignment and Skeletal Muscle Mechanical Properties: A Repeated-Measures Trial in Healthy Adults
Background/Objectives: Backpacks are widely used for carrying loads; however, posteriorly positioned loads can shift the body’s center of mass, promote forward trunk and head compensation, and increase neck and shoulder muscle loading. This study examined the effects of a detachable lumbar support cushion at loads equi...