Mitchell Andrew, Dyson Rosemary, Hale Tudor, Abraham Corinne
University of Chichester, Chichester, West Sussex, United Kingdom.
Med Sci Sports Exerc. 2008 Aug;40(8):1522-8. doi: 10.1249/MSS.0b013e31817356d6.
To test the hypothesis that ankles with functional instability will demonstrate greater single-limb postural sway (PS) than their contralateral stable joint and stable healthy controls and to examine the relationship between single-limb postural sway and muscular reaction time to a simulated ankle sprain mechanism.
Nineteen male volunteers with a history of unilateral ankle sprain and functional ankle instability (FAI) and 19 healthy male controls performed 12 single-limb PS tests, 3 on each leg with and without vision. Participants provided informed consent. Postural sway data are reported on the FAI group's unstable (UA) and stable ankles (SA), and the control group's dominant (DA) and nondominant ankles (NDA).
With vision, the UA and SA revealed similar postural control; however, the UA showed greater (P < 0.05) anteroposterior PS than the DA (0.46 cm) and the NDA (0.51 cm). Without vision, the UA showed greater (P < 0.05) medial (2.41 cm) and lateral (2.59 cm) PS than the SA and also showed greater (P < 0.05) medial (2.05 and 2.10 cm, respectively) and lateral (2.28 and 2.26 cm, respectively) than the DA and NDA. The relationship between PS and muscle reaction times, derived from the previous article was calculated. Significant correlations (P < 0.05) were found between the unstable ankle peroneus longus (PL) and peroneus brevis (PB) reaction time and lateral (r = 0.63 and r = 0.81, respectively), medial (r = 0.74 and r = 0.76, respectively), and anterior PS (r = 0.56 and r = 0.55, respectively; P < 0.01).
Results reveal postural sway deficits in ankles with FAI. They also demonstrate a significant relationship between PL and PB reaction times and postural sway in UA. Individuals who sustain an acute ankle sprain and those with FAI require rehabilitation that improves proprioception, strengthens the evertors and dorsiflexors, and restores peroneal reaction time.
验证以下假设，即功能不稳定的踝关节比其对侧稳定关节及健康对照者的单腿姿势摆动（PS）更大，并研究单腿姿势摆动与模拟踝关节扭伤机制时肌肉反应时间之间的关系。
19名有单侧踝关节扭伤及功能性踝关节不稳定（FAI）病史的男性志愿者和19名健康男性对照者进行12次单腿PS测试，每条腿在有视觉和无视觉情况下各测试3次。参与者均签署知情同意书。报告FAI组不稳定踝关节（UA）和稳定踝关节（SA）以及对照组优势踝关节（DA）和非优势踝关节（NDA）的姿势摆动数据。
在有视觉情况下，UA和SA显示出相似的姿势控制；然而，UA的前后向PS比DA（0.46厘米）和NDA（0.51厘米）更大（P<0.05）。在无视觉情况下，UA的内侧（2.41厘米）和外侧（2.59厘米）PS比SA更大（P<0.05），并且比DA和NDA的内侧（分别为2.05和2.10厘米）和外侧（分别为2.28和2.26厘米）也更大（P<0.05）。计算了从前一篇文章得出的PS与肌肉反应时间之间的关系。发现不稳定踝关节的腓骨长肌（PL）和腓骨短肌（PB）反应时间与外侧（分别为r = 0.63和r = 0.81）、内侧（分别为r = 0.74和r = 0.76）以及前向PS（分别为r = 0.56和r = 0.55；P<0.01）之间存在显著相关性。
结果显示FAI踝关节存在姿势摆动缺陷。它们还表明PL和PB反应时间与UA中的姿势摆动之间存在显著关系。遭受急性踝关节扭伤的个体以及患有FAI的个体需要进行康复治疗，以改善本体感觉、增强外翻肌和背屈肌，并恢复腓骨反应时间。
