Gender differences in knee kinematics and muscle activity during single limb drop landing
Gender differences in knee kinematics and muscle activity during single limb drop landing
复制标题
DOI：
10.1016/j.knee.2006.11.008
复制
发表时间：
2007-06-01
期刊：
影响因子：
1.9
通讯作者：
Fukubayashi, Toru
中科院分区：
文献类型：
--
作者：
Nagano, Yasuharu;Ida, Hirofumi;Fukubayashi, Toru
在非接触性情况下，女性遭受前交叉韧带损伤的可能性是男性的两到八倍。然而，前交叉韧带损伤的机制和危险因素尚不清楚。对18名男运动员和19名女运动员在落地过程中膝关节运动学和肌电活动进行了比较。计算了单肢落地时屈曲/伸展、外翻/内翻、胫骨内外旋的角位移，以及胫骨前后平移的平移位移。在着陆过程中，女性的胫骨内旋度显著大于男性，而在屈曲、内翻、外翻和胫骨前移方面则没有差异。在足部接触前50INS时间段，男性的腿筋/股四头肌比值(HQR)大于女性。单肢落地时非接触性前交叉韧带损伤的机制是胫骨内侧旋转和膝关节外翻旋转。胫骨内旋转增加、股四头肌活动度增加和HQR降低可能是女性运动员非接触性前交叉韧带损伤发生率较高的原因之一。(C)2006爱思唯尔B.V.保留所有权利。
The likelihood of sustaining an ACL injury in a noncontact situation is two to eight times greater for females than for males. However, the mechanism and risk factors of ACL injury are still unknown. We compared knee kinematics as well as electromyographic activity during landing between male and female athletes.Eighteen male athletes and nineteen female athletes participated in the experiment. The angular displacements of flexion/extension, valgus/varus, and intemal/extemal tibial rotation, as well as the translational displacements of anterior/posterior tibial translation during single limb drop landing were calculated. Simultaneous electromyographical activity of the rectus femoris (RF) and hamstrings (Ham) was taken.During landing, internal tibial rotation of the females was significantly larger than that of the males, while differences were not observed in flexion, varus, valgus, and anterior tibial translation. Hamstrings/quadriceps ratio (HQR) for the 50 ins time period before foot contact was greater in males than in females.The mechanism of noncontact ACL injury during a single limb drop landing would be internal tibial rotation combined with valgus rotation of the knee. Increased internal tibial rotation combined with greater quadriceps activity and a low HQR could be one reason female athletes have a higher incidence of noncontact ACL injuries. (c) 2006 Elsevier B.V All rights reserved.