Alterações no dorso e coluna vertebral durante a marcha / Alterations of the back and spine shapes during a treadmill walking
Rev. bras. biomec
;
1(1): 21-26, nov. 2000. graf
Article
in Portuguese
| LILACS
| ID: lil-358808
RESUMO
This study proposes a form of analysis of the geometrical alterations of the back and the spine shapes during a treadmili walking. Skin surface markers are attached to the body in order to localize anatomical points; twenty-seven points along the line defined by the spinous processes and eight bilateral points on the back. Eight gait cycles are recorded by videocameras in a calibrated space to allow the three-dimensional reconstruction of the marker's location. For each analyzed instant a continuous curve is fitted to the data to represent the spine shape. The two-dimensional curvature in the frontal plane is computed and shown as function of the vertical coordinate. The alteration in the spine shape at different leveis is shown as a function of the gait cycie phase. The oscillations of the bilateral points around the vertical axis, as function of the gait cycie phase are shown. The ana@sis suggests the existence of a mechanical torsion of the trunk during the gait cycie. The proposed methodology permits a geometrical representation of the moving spine which is continuous in space and time together with Quantitative information on the movement of the back.
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Index:
LILACS (Americas)
Main subject:
Posture
/
Spine
/
Back
/
Gait
Limits:
Humans
Language:
Portuguese
Journal:
Rev. bras. biomec
Journal subject:
Biomedical Engineering
Year:
2000
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual de Campinas/BR
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