Differences of ground reaction forces and kinematics of lower extremity according to landing height between flat and normal feet
Differences of ground reaction forces and kinematics of lower extremity according to landing height between flat and normal feet
复制标题
DOI：
10.3233/bmr-2012-0306
复制
发表时间：
2012-01-01
影响因子：
1.6
通讯作者：
Park, So Hyun
中科院分区：
文献类型：
--
作者：
Chang, Jong Sung;Kwon, Yong Hyun;Park, So Hyun
该研究比较了扁平足和正常足男性受试者从不同高度的平台双脚着地时的下肢运动学和动力学。招募了 10 名扁平足弓受试者和 10 名正常足弓受试者。他们从 20、40 和 60 厘米的高度在测力板上进行了双肢降落。使用三维运动分析系统、测力板和肌电图来分析下肢动力学和运动学数据。扁平足组的GRF和矢状面角度随着着地高度的增加而显着增加。特别是60cm高度时的髋关节角度明显更大。平足组胫骨前肌和股外侧肌的肌电图值显着较高，而拇展肌、腓肠肌和股二头肌的肌电图值显着较低。与正常足弓的人相比，扁平足者的下肢 GRF、关节角度和肌肉活动模式随着身高的增加而增加更多。扁平足可能会加剧从高处着陆时受到冲击的风险；这可以通过髋关节的补偿策略来改善，以促进负载分布。
The study compared lower extremity kinematics and kinetics between male subjects with flat and normal feet when landing on both feet from platforms at different heights. Ten subjects with a flat feet arch and 10 subjects with a normal foot arch were recruited. They performed a double limb drop landing from 20, 40, and 60 cm onto a force-plate. A three-dimensional motion analysis system, force plates, and electromyography were used to analyze lower extremity kinetic and kinematic data. The GRF and angle of sagittal plane significantly increased with landing height in the flat foot group. In particular, hip joint angles at a height of 60 cm were significantly greater. The electromyography values were significantly higher for the tibialis anterior and vastus lateralis muscles, but were significantly lower in the abductor hallucis, gastrocnemius, and biceps femoris muscles in the flat foot group. GRF, joint angles, and muscle activity patterns in the lower extremities increases more with height in flat footed individuals than in people with a normal foot arch. Flat feet may aggravate the risk of shock on landing from a height; this might be ameliorated by a compensatory strategy at the hip joints to facilitate load distribution.