Influence of automobile seat lumbar support prominence on spine and pelvic postures: A radiological investigation

The use of lumbar supports has been associated with decreased reports of low back pain during driving exposures. However, there has been limited work investigating whether lumbar supports actually change spine and pelvic postures at the level of the vertebrae. To investigate the effectiveness of a l...

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Bibliographic Details
Published in:	Applied ergonomics 2012-09, Vol.43 (5), p.876-882
Main Authors:	De Carvalho, Diana E., Callaghan, Jack P.
Format:	Article
Language:	eng
Subjects:	Adult Applied physiology Automobile Driving Automobile seats Back pain Biological and medical sciences Biomechanical Phenomena Equipment Design Ergonomics Ergonomics. Work place. Occupational physiology Human physiology applied to population studies and life conditions. Human ecophysiology Humans Low back pain Low Back Pain - etiology Lumbar spine biomechanics Lumbosacral Region - diagnostic imaging Male Medical sciences Pelvis - diagnostic imaging Posture Posture - physiology Radiography Spine Young Adult
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Summary:	The use of lumbar supports has been associated with decreased reports of low back pain during driving exposures. However, there has been limited work investigating whether lumbar supports actually change spine and pelvic postures at the level of the vertebrae. To investigate the effectiveness of a lumbar support in changing radiological measures of lumbar spine and pelvic postures and to examine the impact of support excursion magnitudes on these postures. Eight male subjects were recruited with no history of back injury, pathologies or low back pain within the past 6 months. Radiographs were taken in four postures: standing, and sitting with 0 cm, 2 cm and 4 cm lumbar support prominence (LSP). Lumbar lordosis angle increased from 20° with no support to 25° with 2 cm support and 30° with 4 cm support. Lumbar lordosis angles were significantly different between 0 cm support and 4 cm support (p 0.001) with the exception of L1/L2 in 4 cm support (p = 0.1381) and L5/S1 for all seated postures (p = 0.0687). All measures of pelvic posture were significantly different in sitting compared to standing (p
ISSN:	0003-6870 1872-9126