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Objective. To evaluate the accuracy of locating the hip center (HIPC) by comparing in-vivo estimations to posthumous HIPC measurement in the same subject.Background. Numerous techniques have been used to locate the HIPC in living subjects and in cadavers. There are no published reports, however, which have compared measurements of the HIPC obtained in-vivo and ex-vivo for the same subject.Design...
This study investigates the influence of chair height on the dynamics of sit-to-stand for two age groups. Eleven young (25-36 years) and 10 older (61-79 years) adults participated. Subjects rose from chairs set at four heights relative to knee height. Motion was quantified using a bilateral active-marker-based motion analysis system. Subjects appeared to increase trunk flexion angular velocity...
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