Development of training machine with mechanical impedance display for strength training

开发具有机械阻抗显示的力量训练训练机

• 批准号: 16300214
• 负责人: ISAKA Tadao
• 金额: $ 9.54万
• 依托单位: Ritsumeikan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16300214/
• 关键词: training machine; mechanical impedance; muscle strength; power; sports engineering; インピーダンス; インピーダンストレーニング; ER流体; ER流体クラッチ; 筋力トレーニング; 筋特性

It is necessary for strength training machines, especially high speed and high power machines, to have safety mechanisms. We have developed the strength machine with ER clutch. This machine could move with high speed, high power, high accuracy and safety. Even if this machine is out of control, operated lever arm rotates only up to 0.52[rad/s] by using speed control of the input torque motor to ER clutch. And we verified the performance of our machine with the experiment of isokinetic load (0.52, 4.19, 8.72 [rad/s]). As the results of the experiment, this machine could display loads within every desired angular velocity ±5%. And this machine performed 44.4[Nm] at maximum during 0.52[rad/s] movement.And we have proposed a new index for the characteristics of muscular outputs with cross section and volumes calculated by the three plane patterns (angular velocity-torque plane, angle-torque plane, and angle-angular velocity plane) on the three-dimensional figures. A peak torque was generally used to evaluate muscular strength and the evaluation with two-dimensional curve, such as force-velocity curve and force-power curve were utilized to evaluate the characteristics of muscular outputs as usual. However, even though muscular outputs among the subjects show similar experimental results on force-velocity curve, there are some cases where they show different characteristics on three-dimensional surface including angular data. In order to evaluate muscular characteristics, three-dimensional index including angle, velocity and torque value shows the detail property of muscular characteristics. From obtained data we consisted of three-dimensional surface with angular position, angular velocity and torque data and calculated the volumes by three plane patterns. By using these indexes, we compared with the muscular outputs among different types of athletic events. As a result, these indexes showed significant differences among the athletic events.

力量训练器械，特别是高速、大功率的器械，必须要有安全机构。我们开发了带ER离合器的强力机。该机具有高速、大功率、高精度、安全等特点。即使机器失去控制，通过使用ER离合器输入转矩电机的速度控制，操作杠杆臂也只能旋转0.52[rad/s]。并通过等速负荷（0.52,4.19,8.72 [rad/s]）实验验证了机器的性能。实验结果表明，该仪器可以显示在每一个期望角速度±5%范围内的载荷。在0.52[rad/s]的运动中，该机器的最大速度为44.4[Nm]。在此基础上，我们提出了用角速度-扭矩平面、角-扭矩平面和角速度-角速度平面三种平面模式计算肌肉输出截面和体积特征的新指标。肌肉强度的评价一般采用峰值扭矩，而肌肉输出特性的评价通常采用二维曲线，如力-速度曲线和力-功率曲线。然而，尽管被试之间的肌肉输出在力-速度曲线上显示出相似的实验结果，但在某些情况下，它们在包括角度数据在内的三维表面上显示出不同的特征。为了评价肌肉特征，包括角度、速度和扭矩值在内的三维指标显示了肌肉特征的细节属性。根据所获得的数据，我们将三维表面与角位置、角速度和扭矩数据组成，并按三种平面模式计算体积。通过这些指标，我们比较了不同类型运动项目的肌肉输出量。结果表明，这些指标在不同的运动项目之间存在显著差异。