The control of body orientation and center of mass location under asymmetrical loading.
The control of body orientation and center of mass location under asymmetrical loading.
复制标题
非对称载荷下身体方向和质心位置的控制。
DOI：
10.1016/s0966-6362(00)00102-8
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
MacLeod,M
中科院分区：
文献类型：
--
作者：
Wu,G;MacLeod,M
本研究旨在探讨如何在安静的立场，当一个重量是不对称的右侧的骨盆上加载时，整个身体的质量中心（COM）在内侧-外侧方向和空间方向的身体部分的变化。负荷对应于每个个体受试者体重（BW）的10%和30%，站立宽度从窄（7.6 cm）到正常（20 cm）和宽（33 cm）不等。共有10名健康年轻受试者（18-30岁）参加了本研究。结果表明，COM位置明显向负载侧移动（10% BW负载约1.2 cm，30% BW负载约3 cm）。此外，COM更接近中心与窄的立场（0.38厘米到中心的权利）比正常和宽的立场（约1厘米到权利）。然而，所有测试条件下的COM偏移均小于（<50%）理论预测值。COM位置的较小变化似乎主要是由于骨盆和下肢空间方向的变化（10%BW负载时变化约2.5°，30%BW负载时变化4.5°），同时保持上身方向相对不变（30%BW负载时小于2°）。这种策略可以允许以最小量的肌肉激活增加直立站立的稳定性。
This study examined how whole body center of mass (COM) in the medial–lateral direction and spatial orientation of body segments changed during quiet stance when a weight was loaded on asymmetrically on the right side of the pelvis. The load corresponded to 10 and 30% of body weight (BW) of each individual subject, and the stance width was varied from narrow (7.6 cm) to normal (20 cm) and to wide (33 cm). A total of 10 healthy young subjects (18–30 years of age) participated in the study. The results indicated that the COM location was significantly shifted towards the loaded side (about 1.2 cm with a 10% BW load and 3 cm with a 30% BW load). In addition, COM was closer to the center with a narrow stance (0.38 cm to the right of the center) than both normal and wide stance (about 1 cm to the right). However, the COM shifts for all test conditions were smaller (<50%) than that of the theoretically predicted values. The smaller shift in COM position appeared to be mostly due to the change in spatial orientation of the pelvis and lower extremity (about 2.5° change with a 10% BW load, and 4.5° change with a 30% BW load), while maintaining the upper body orientation relatively unchanged (less than 2° with a 30% BW load). This strategy may allow increased stability of the upright stance with minimal amount of muscle activation.
视觉和体感输入对正常人动态姿势描记术中腿部肌电图反应的影响。
DOI：
--
发表时间：
1994
期刊：
Electroencephalography and Clinical Neurophysiology
影响因子：
--
作者：
D. Timmann;C. Belting;M. Schwarz;H. Diener
通讯作者：
H. Diener
慢性心力衰竭患者手部肌肉的肌电图早期出现局部肌肉疲劳。
影响因子：
4.3
作者：
M. Buonocore;C. Opasich;R. Casale
通讯作者：
R. Casale
人体姿势中平移和旋转扰动的补偿：重心的稳定
影响因子：
2.5
作者：
Albert Gollhofer;G. Horstmann;Wiltrud Berger;V. Dietz
通讯作者：
V. Dietz