Does a back support have a positive biomechanical effect?

@article{Magnusson1996DoesAB,
  title={Does a back support have a positive biomechanical effect?},
  author={Marianne L. Magnusson and M. H. Pope and T. H. Hansson},
  journal={Applied ergonomics},
  year={1996},
  volume={27 3},
  pages={201-5}
}
Back supports, or lifting belts, are widely used. Subjects, free of low back pain, lifted in a simulated task, meeting the 1993 NIOSH guidelines. The back support reduced the electromyographic signal in the dorsal muscles. The back support also reduced the height loss as measured by a stadiometer. In most subjects the support also gave a subjective impression of increased support and increased lifting capacity.