volume 29, issue 5, P643-646 1996
DOI: 10.1016/0021-9290(95)00119-0
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Stuart M. McGill, Daniel Juker, Craig Axler

Abstract: Many studies have reported the geometry of the trunk muscles for use in models to predict spine loads. However, all have reported data collected from subjects positioned in a prone or supine posture which is required by CT or MRI scan techniques. This study compared the abdominal and extensor muscle moment arms obtained with muscles relaxed and activated and in both supine and upright postures. Both internal ultrasound measurements and external anthropometer measurements were collected. The anterior abdominal …

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