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A Dual X-Ray Absorptiometry Validated Geometric Model for the Calculation of Body Segment Inertial Parameters of Young Females

Winter, Samantha L., Forrest, Sarah M., Wallace, Joanne, Challis, John H. (2018) A Dual X-Ray Absorptiometry Validated Geometric Model for the Calculation of Body Segment Inertial Parameters of Young Females. Journal of Applied Biomechanics, 34 (2). pp. 89-95. ISSN 1065-8483. E-ISSN 1543-2688. (doi:10.1123/jab.2016-0307)

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http://dx.doi.org/10.1123/jab.2016-0307

Abstract

The purpose of this study was to validate a new geometric solids model, developed to address the lack of female specific models for body segment inertial parameter estimation. A second aim was to determine the effect of reducing the number of geometric solids used to model the limb segments on model accuracy. The ‘full’ model comprised 56 geometric solids, the ‘reduced’ 31, and the ‘basic’ 16. Predicted whole-body inertial parameters were compared with direct measurements (reaction board, scales), and predicted segmental parameters with those estimated from whole-body DXA scans for 28 females. The percentage root mean square error (%RMSE) for whole-body volume was <2.5% for all models, and 1.9% for the full model. The %RMSE for whole-body center of mass location was <3.2% for all models. The %RMSE whole-body mass was <3.3% for the full model. The RMSE for segment masses was <0.5 kg (<0.5%) for all segments; Bland-Altman analysis showed the full and reduced models could adequately model thigh, forearm, foot and hand segments, but the full model was required for the trunk segment. The proposed model was able to accurately predict body segment inertial parameters for females, more geometric solids are required to more accurately model the trunk.

Item Type: Article
DOI/Identification number: 10.1123/jab.2016-0307
Uncontrolled keywords: int moment, center of mass, segment mass, moment of inertia
Subjects: G Geography. Anthropology. Recreation > GV Recreation. Leisure > Sports sciences
Q Science > QP Physiology (Living systems)
Divisions: Faculties > Sciences > School of Sport and Exercise Sciences
Depositing User: Samantha Winter
Date Deposited: 04 Sep 2017 14:13 UTC
Last Modified: 20 Jan 2020 15:19 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/63215 (The current URI for this page, for reference purposes)
Winter, Samantha L.: https://orcid.org/0000-0001-7450-1105
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