Mineta Shinshiro, Inami Takayuki, Mariano Raldy, Hirose Norikazu
Graduate School of Sport Sciences.
Institute of Physical Education, Keio University, Hiyoshi, Yokohama.
Open Access J Sports Med. 2017 Jun 1;8:123-131. doi: 10.2147/OAJSM.S131596. eCollection 2017.
Center of pressure (COP) is a sudden displacement at the time of a lateral ankle sprain (LAS). It has been suggested that the distribution of plantar pressure and the quantity of COP displacement are important for assessing the risk of LAS. Therefore, we evaluated the plantar pressure during a single-leg balance test with eyes closed (SLB-C) to identify the factors and characteristics of plantar pressure in people with repeated cases of LAS.
We recruited 22 collegiate athletes and divided them into an instability group (IG; n=11) and a control group (CG; n=11). We measured the distribution of plantar pressure and lower extremity muscle activity during a SLB-C along with static alignment and isometric ankle strength.
The fibularis longus (FL) activity was significantly lower in the IG than in the CG. The lateral plantar pressure (LPP)/medial plantar pressure (MPP) ratio was also higher in the IG than in the CG. In addition, the LPP/MPP ratio was correlated with the tibialis anterior (TA)/FL ratio.
These results suggest that increased lateral plantar pressure is related to decreased FL activity and increased TA/FL ratio.
压力中心（COP）是外侧踝关节扭伤（LAS）时的突然位移。有人提出，足底压力分布和COP位移量对于评估LAS风险很重要。因此，我们评估了闭眼单腿平衡测试（SLB-C）期间的足底压力，以确定反复发生LAS的人群足底压力的因素和特征。
我们招募了22名大学生运动员，并将他们分为不稳定组（IG；n = 11）和对照组（CG；n = 11）。我们在SLB-C期间测量了足底压力分布和下肢肌肉活动，以及静态对线和等长踝关节力量。
IG组的腓骨长肌（FL）活动明显低于CG组。IG组的外侧足底压力（LPP）/内侧足底压力（MPP）比值也高于CG组。此外，LPP/MPP比值与胫骨前肌（TA）/FL比值相关。
这些结果表明，外侧足底压力增加与FL活动减少和TA/FL比值增加有关。
