“刚度”(stiffness)一词起源于物理学,又译成“劲度”。所谓刚度是指物体在受载(load)时抵抗变形的能力,刚度大则变形小,刚度小则变形大。对于一个简单的弹簧而言,刚度可以表示为外力对系统作用与所产生位移之间的比例关系。由于在运动科学领域中尤以下肢的运动 The term “stiffness” originates from physics and is translated as “stiffness”. The so-called stiffness refers to the object in the load (load) the ability to resist deformation, large deformation is small stiffness, small deformation is large deformation. For a simple spring, the stiffness can be expressed as the ratio between external forces on the system and the resulting displacement. Due to the lower extremity movement in the field of sports science