Cabaud H E, Chatty A, Gildengorin V, Feltman R J
Am J Sports Med. 1980 Mar-Apr;8(2):79-86. doi: 10.1177/036354658000800204.
Seventy-five rats were divided into a control and four exercise groups of differing frequency and duration. After 8 weeks of endurance-type exercise on a motorized treadmill, the rats were sacrificed and the anterior cruciate ligaments were tested to failure on an Instron materials testing machine at a strain rate of 95% sec-1. Of the 121 ligaments tested, 119 failed by pure interstitial failure. There was significant increase in both the strength and stiffness of the anterior cruciate ligaments in the exercised rats but those rats exercised more frequently (daily vs. every other day) and for shorter duration (30 min rather than 60 min) had the greatest increase in strength. This study has shown that endurance-type exercise is beneficial to the anterior cruciate ligament as both strength and stiffness are increased and functionally the ligament remains unchanged by exercise.
75只大鼠被分为一个对照组和四个运动频率及持续时间不同的运动组。在电动跑步机上进行8周耐力型运动后，处死大鼠，并在Instron材料试验机上以95%秒-1的应变率对前交叉韧带进行直至破坏的测试。在测试的121条韧带中，119条因单纯的间质破坏而失效。运动大鼠的前交叉韧带的强度和刚度均显著增加，但那些运动频率更高（每天运动与隔天运动相比）且持续时间更短（30分钟而非60分钟）的大鼠强度增加最大。这项研究表明，耐力型运动对前交叉韧带有益，因为其强度和刚度均增加，且在功能上韧带并未因运动而改变。
