Head and trunk mass and center of mass position estimations in able-bodied and scoliotic girls
| Autor: | Paul Allard, Mohsen Damavandi, Georgios A. Stylianides, G. Dalleau, Charles-Hilaire Rivard |
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| Přispěvatelé: | Hakim Sabzevari University, Déterminants Interculturels de la Motricité et de la Performance Sportive (DIMPS), Université de La Réunion (UR), University of Scranton, Université de Montréal (UdeM) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Risk
Accurate estimation Posture education Biomedical Engineering Biophysics Center of mass Adolescent idiopathic scoliosis 03 medical and health sciences 0302 clinical medicine Center of pressure (terrestrial locomotion) medicine Humans [PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] Head and trunk Mathematics Mechanical Phenomena Plate method Body segment Mechanical Processes Torso 030229 sport sciences Anatomy Mass Trunk medicine.anatomical_structure Scoliosis Case-Control Studies Female Head 030217 neurology & neurosurgery |
| Zdroj: | Medical Engineering and Physics Medical Engineering and Physics, Elsevier, 2013, 35 (11), pp.1607--1612. ⟨10.1016/j.medengphy.2013.05.010⟩ |
| ISSN: | 1350-4533 |
| DOI: | 10.1016/j.medengphy.2013.05.010 |
| Popis: | International audience; Anthropometric tables are not applicable to calculate the scoliotic trunk mass and center of mass (COM). The purposes of this study were: (1) to estimate the head and trunk mass and COM in able-bodied and scoliotic girls using a force plate method, (2) to estimate head and trunk COM offset compared to those of the body, and (3) the use of mean ratios to estimate the head and trunk COM calculated in this study and that calculated according to a conventional three-dimensional (3D) method compared to the measured values. Twenty-one scoliotic and twenty able-bodied girls participated. The subjects stood upright with arms beside the trunk on a force plate that collected data at 60 Hz for a period of 5s. The anteroposterior and mediolateral positions of the body COM were obtained from the mean center of pressure values. The height of the body COM was estimated by the reaction board method. Afterwards a body segment was displaced and changes in force plate readings were recorded and applied to estimate the head and trunk mass and COM. Trunk offset was defined as the difference between the COM of the body and head and trunk. The measured head and trunk COM was compared to values obtained by the mean ratios calculated from this study and given by the conventional 3D method. The relative head and trunk mass and the anteroposterior trunk offset were larger in scoliotic girls. The force plate method gave similar results to measured COM values for both groups underlying its capability to provide a more accurate estimation of COM related values. Thus, the use of mean ratios of 0.5538 and 0.6438 obtained in this study to estimate the head and trunk mass and COM position in scoliotic girls can overcome the main drawbacks of current anthropometric methods, if direct measurements cannot be taken. |
| Databáze: | OpenAIRE |
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