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目的 :探讨训练模式对跟腱生物力学塑造改建的特点 ,以期为预防军事训练伤提出相应的预防措施。方法 :在特制的兔跑跳装置中 ,采用不同负荷和时间的训练模式对成年兔进行训练 ,切取跟腱及其末端区进行组织学、超微结构观察和生物力学检测。结果 :无论在光镜、电镜下观察 ,跟腱在训练第 4周存在结构薄弱期 ,且训练负荷比训练时间的影响更明显 ;生物力学测试。训练 2周时 ,与对照组相比 ,实验Ⅰ组差异不显著 ,到训练 4、6、8、10周时差异显著 (P <0 0 5 ) ,并且逐渐增大。实验Ⅱ组训练 4、6、8、10周时与对照组均差异显著 (P <0 0 5 ) ,但至 6周时达最高点 ,8周、10周又逐步下降 ;实验Ⅲ组与实验Ⅱ组类似 ,2、4周逐渐上升 ,并于 4周达最高点 ,6周、8周、10周逐步下降。结论 :过度负荷是跟腱损伤或发病的主要原因 ,减轻训练负荷 ,有助于减少跟腱训练伤
OBJECTIVE: To explore the characteristics of the training model for reconstruction of Achilles tendon biomechanics and to provide corresponding preventive measures for the prevention of military training injuries. Methods: In a special rabbit-run jumping device, the adult rabbits were trained by different load and time training mode. The Achilles tendon and its terminal region were cut for histological observation, ultrastructure observation and biomechanical examination. Results: The Achilles tendon had a weakened structure in the fourth week of training, and the training load had a more obvious effect than the training time, both in light and electron microscopy. Biomechanical test. Compared with the control group, there was no significant difference between the two groups at the two weeks of training. There was a significant difference (P <0.05) at the 4th, 6th, 8th and 10th, and the 10th week after training, and gradually increased. There was significant difference between the experimental group Ⅱ and the control group at 4, 6, 8 and 10 weeks (P <0.05), but reached the highest point at 6 weeks, and then gradually decreased at 8 and 10 weeks. In experimental group Ⅲ and experimental group Ⅱ Similarly, 2,4 weeks gradually increased, and reached the highest point in 4 weeks, 6 weeks, 8 weeks, 10 weeks decreased gradually. Conclusion: Over-load is the main reason of Achilles tendon injury or morbidity, reduce training load and help to reduce Achilles tendon training injury