Weisman G, Pope M H, Johnson R J
Am J Sports Med. 1980 Jan-Feb;8(1):24-30. doi: 10.1177/036354658000800105.
The effect of cyclic loading on knee ligaments was studied both in vivo and in vitro. The compliance of the medial collateral ligaments of athletes participating in hockey, basketball, soccer, and downhill skiing was determined by using a specially built machine. Tests were conducted before and after participation in the various sports. Most subjects tested showed an increased compliance after their respective sporting activities. This observation was confirmed in the laboratory by imparting cyclic loading to 10 people under controlled conditions. The in vitro studies were conducted on the medial collateral ligaments of rats. These were tested to determine the effect of cyclic loading on the strength and stiffness of the ligaments. Results show a clear relationship between decreased stiffness or softening and a reduction in strength of the ligament. The amount of softening was related to the cyclic stress in the ligament.
对膝关节韧带的循环加载效应进行了体内和体外研究。通过使用一台特制的机器，测定了参加曲棍球、篮球、足球和速降滑雪运动的运动员内侧副韧带的顺应性。在参加各项运动之前和之后进行了测试。大多数受试对象在各自的体育活动后显示出顺应性增加。在实验室中，通过在受控条件下对10人施加循环加载，证实了这一观察结果。体外研究是在大鼠的内侧副韧带进行的。对这些韧带进行测试，以确定循环加载对韧带强度和刚度的影响。结果表明，韧带刚度降低或软化与韧带强度降低之间存在明显的关系。软化程度与韧带中的循环应力有关。
