Age-related changes in the passive resisting moments at the hip

Journal of Biomechanical Science and Engineering

Fusako KAWABATA¹  Kazumasa MATSUDA¹  Satoshi KAKUNAI¹  Masayoshi ABO¹  Masaru HIGA¹ 

[1] Department of Mechanical Engineering, University of Hyogo

关键词: Aging;    Hip;    Passive moment;    Joint stiffness;    Musculoskeletal computer model;   

DOI  :  10.1299/jbse.2014jbse0005

来源: Japan Society of Mechanical Engineers

【 摘 要 】

References(17)The purpose of this study was to investigate age-related changes in the passive resisting moments at the hip.The changes in the passive resisting moments were hypothesized to occur due to age-related changes in musclestiffness. Two groups of healthy men participated in this study: young men (approximately 24 years of age) andold men (approximately 68 years of age). Subjects were positioned in a left lateral decubitus position with theirleft limb supported on a table. With a subject relaxed, an experimenter slowly moved the subject’s limb bypulling or pushing the handle attached to the lower limb via a load cell. The subject’s hip was moved in passiverange of flexion-extension motions. The joint kinematics, measured by a motion capture system, and load cellreadings were used to compute the passive resisting moments-joint angle curves at the hip. The passiveresisting moments at the hip were found to considerably depend on the adjacent knee angle. The maximalresisting moments, when the hip was extended, were larger for the older group than for the younger group. Themeasured resisting moments were finally validated against the resisting moments calculated by amusculoskeletal computer model for the same movements. The computer model was able to predict measuredtendencies of the moments at the hip. However, further adjustments of the computer model are required torepresent the aging effects precisely.

【 授权许可】

Unknown