A Dual X-Ray Absorptiometry Validated Geometric Model for the Calculation of Body Segment Inertial Parameters of Young Females
| Autor: | Samantha L. Winter, John H. Challis, Joanne Wallace, Sarah Forrest |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Models
Anatomic Inertial frame of reference Mean squared error Movement 0206 medical engineering Biophysics Geometry 02 engineering and technology Models Biological 03 medical and health sciences Young Adult 0302 clinical medicine Absorptiometry Photon Statistics Humans Orthopedics and Sports Medicine Whole Body Imaging Dual x-ray absorptiometry GV558 Mathematics Estimation theory Rehabilitation Body segment Moment of inertia 020601 biomedical engineering QP Biomechanical Phenomena Female Center of mass Anatomic Landmarks Geometric modeling 030217 neurology & neurosurgery |
| ISSN: | 1065-8483 |
| Popis: | 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 model comprised 31, and the basic model comprised 16. Predicted whole-body inertial parameters were compared with direct measurements (reaction board, scales), and predicted segmental parameters with those estimated from whole-body dual x-ray absorptiometry scans for 28 females. The percentage root mean square error (%RMSE) for whole-body volume was2.5% for all models and 1.9% for the full model. The %RMSE for whole-body center of mass location was3.2% for all models. The %RMSE whole-body mass was3.3% for the full model. The RMSE for segment masses was0.5 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. |
| Databáze: | OpenAIRE |
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