title: The healthy back, its environment and characteristics: a pilot study.
mesh_terms: D001415:Back / Q000502:physiology*; D001416:Back Pain / Q000517:prevention & control; D006804:Ergonomics; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000517:prevention & control; D013548:Sweden