Conceição Josilene Souza, Schaefer de Araújo Felipe Gustavo, Santos Gilmar Moraes, Keighley John, Dos Santos Marcio Jose
Department of Physical Therapy, Santa Catarina State University, Florianópolis, Brazil.
Department of Biostatistics, University of Kansas Medical Center, Kansas City.
J Athl Train. 2016 Jun 2;51(6):480-90. doi: 10.4085/1062-6050-51.8.02. Epub 2016 Jun 13.
Rehabilitation programs for patients with chronic ankle instability (CAI) generally involve balance-perturbation training (BPT). Anticipatory postural adjustments (APAs) and compensatory postural adjustments (CPAs) are the primary strategies used to maintain equilibrium during body perturbations. Little is known, however, about how APAs and CPAs are modified to promote better postural control for individuals with CAI after BPT.
To investigate the effect of BPT that involves kicking a ball on postural-control strategies in individuals with CAI.
Randomized controlled clinical trial.
Laboratory.
We randomly assigned 44 volunteers with CAI to either a training group (TG; 11 women, 11 men; age = 24 ± 4 years, height = 173.0 ± 9.8 cm, mass = 72.64 ± 11.98 kg) or control group (CG; 11 women, 11 men; age = 22 ± 3 years, height = 171.0 ± 9.7 cm, mass = 70.00 ± 11.03 kg).
INTERVENTION(S): The TG performed a single 30-minute training session that involved kicking a ball while standing on 1 foot. The CG received no intervention.
MAIN OUTCOME MEASURE(S): The primary outcome was the sum of the integrated electromyographic activity (∑∫EMG) of the lower extremity muscles in the supporting limb that were calculated during typical intervals for APAs and CPAs. A secondary outcome was center-of-pressure displacement during similar intervals.
In the TG after training, the ∑∫EMG decreased in both dorsal and ventral muscles during compensatory adjustment (ie, the time interval that followed lower limb movement). During this interval, muscle activity (∑∫EMG) was less in the TG than in the CG. Consequently, center-of-pressure displacement increased during the task after training.
A single session of ball-kicking BPT promoted changes in postural-control strategies in individuals with CAI. These results should stimulate new and more comprehensive studies to investigate the effect of this and other BPT techniques on postural control in patients with CAI.
慢性踝关节不稳（CAI）患者的康复计划通常包括平衡扰动训练（BPT）。预期姿势调整（APA）和代偿性姿势调整（CPA）是身体受到扰动时用于维持平衡的主要策略。然而，对于BPT后如何调整APA和CPA以促进CAI患者获得更好的姿势控制，人们知之甚少。
研究涉及踢球的BPT对CAI患者姿势控制策略的影响。
随机对照临床试验。
实验室。
我们将44名CAI志愿者随机分为训练组（TG；11名女性，11名男性；年龄=24±4岁，身高=∫173.0±9.8厘米，体重=72.64±11.98千克）或对照组（CG；11名女性，11名男性；年龄=22±3岁，身高=171.0±9.7厘米，体重=70.00±11.03千克）。
TG进行了一次30分钟的训练课程，内容是单脚站立时踢球。CG未接受干预。
主要观察指标是在APA和CPA的典型时间间隔内计算出的支撑肢体下肢肌肉的积分肌电图活动总和（∑∫EMG）。次要观察指标是相似时间间隔内的压力中心位移。
训练后，TG在代偿性调整期间（即下肢运动后的时间间隔），背侧和腹侧肌肉的∑∫EMG均降低。在此时间间隔内，TG的肌肉活动（∑∫EMG）低于CG。因此，训练后任务期间压力中心位移增加。
单次踢球BPT促进了CAI患者姿势控制策略的改变。这些结果应促使开展新的、更全面的研究，以探究这种及其他BPT技术对CAI患者姿势控制的影响。
