@article {Potvin:1997:0014-0139:691,
title = "Use of NIOSH equation inputs to calculate lumbosacral compression forces",
journal = "Ergonomics",
parent_itemid = "infobike://tandf/terg",
publishercode ="tandf",
year = "1997",
volume = "40",
number = "7",
publication date ="1997-07-01T00:00:00",
pages = "691-707",
itemtype = "ARTICLE",
issn = "0014-0139",
eissn = "1366-5847",
url = "https://www.ingentaconnect.com/content/tandf/terg/1997/00000040/00000007/art00001",
doi = "doi:10.1080/001401397187847",
keyword = "DISC COMPRESSION, MANUAL MATERIALS HANDLING, BIOMECHANICS, REGRESSION MODELS, LOW-BACK PAIN",
author = "Potvin, J. R.",
abstract = "The purpose of the current paper was to develop regression-based models that use NIOSH lifting equation H and V values to accurately calculate L /S compression 5 1 forces during symmetrical load-bearing tasks. Results from a linked-segment, biomechanical model were used as the criterion. Twenty-two subjects (11 males, 11 females) performed movements through a wide range of postures in the sagittal plane. Each model was developed with the data from 16 subjects ( n = 1704 postures) and validated with 6 subjects ( n = 750 postures). Five loads were iterated from 0 to 28 kg (females) or 36 kg (males) or until the strength demand at one joint exceeded the 98th percentile value predicted for that gender. Both models required the input of the NIOSH H and V values, subject body mass, load mass and trunk angle. MODEL1 used regression equations to calculate the moment arm from the load, and the upper body centre of mass, to the L /S joint. 5 1 These lengths were subsequently used in a biomechanical model to calculate the . joint compression force ( R 2 = 0 989, RMS error = 147 N). MODEL2 predicted compression force directly with one equation using the same inputs as MODEL1 . ( R 2 = 0 983, RMS error = 183 N, both models n = 6467). The results were slightly improved for both models when applied to the validation subject data ( n = 2303). Regression models were also developed to estimate the maximum and minimum expected trunk angles for all possible H and V combinations so that 'worst case' scenarios could be evaluated for given load positions.",
}