...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Biomechanics >A COMPARISON OF INTERSEGMENTAL JOINT DYNAMICS TO ISOKINETIC DYNAMOMETER MEASUREMENTS
【24h】

A COMPARISON OF INTERSEGMENTAL JOINT DYNAMICS TO ISOKINETIC DYNAMOMETER MEASUREMENTS

机译：节间关节动力学与等速测力仪的比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study quantified the errors associated with measurements obtained using an isokinetic dynamometer for knee evaluation at 60 degrees and 180 degrees s(-1). Five normal subjects were tested. A triaxial electrogoniometer was used to measure the kinematics. A custom-designed load cell was used to measure the three orthogonal components of the reaction force applied by the isokinetic dynamometer to the leg. The inverse dynamics problem was solved to obtain the intersegmental dynamics at the knee joint. These data were compared to those obtained from the isokinetic dynamometer. The results indicate that the knee motion recorded by the isokinetic dynamometer was in error by 7-9 degrees during flexion and 10-13 degrees during extension. The isokinetic dynamometer recorded knee flexions which were less than actual during the flexion portion of the exercise and greater than actual during extension. The duration of constant velocity was limited based on the speed selected. The knee moment was in error by 5 Nm during flexion and 25-29 Nm during extension. The use of a gravity correction factor reduced the knee moment error during extension, but increased it during flexion. [References: 41]
机译：这项研究量化了与等速测力计在60度和180度s（-1）进行膝关节评估时获得的测量相关的误差。测试了五名正常受试者。三轴电测角仪用于测量运动学。使用定制设计的称重传感器来测量等速测力计施加到腿部的反作用力的三个正交分量。解决了逆动力学问题，以获得膝关节的节间动力学。将这些数据与从等速测功机获得的数据进行比较。结果表明，由等速测功机记录的膝盖运动在弯曲过程中误差为7-9度，在伸展过程中误差为10-13度。等速测功机记录的膝部弯曲度在锻炼的弯曲部分小于实际值，而在伸展期间大于实际值。恒定速度的持续时间受所选速度的限制。屈曲过程中膝部力矩误差为5 Nm，伸展过程中为25-29 Nm。重力校正因子的使用减少了伸展过程中的弯矩误差，但在屈曲过程中却增加了该误差。 [参考：41]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号