Plyometric exercise has been suggested for knee injury prevention in sports participation, but studies on ankle plyometric training are limited. This study aims to investigate the change of joint position sense and neuromuscular activity of the unstable ankle after six-week integrated balance/plyometric training and six-week plyometric training. Thirty recreational athletes with functional ankle instability were allocated into three groups: plyometric group (P) vs. plyometric integrated with balance training group (BP) vs. control group (C). Ankle joint position sense, integrated electromyography (EMG), and balance adjusting time during medial single-leg drop-landing tasks were measured before and after the training period. Following the six-week period, both training groups exhibited a lower absolute error in plantar flexion (P group: pre: 3.79° ± 1.98°, post: 2.20° ± 1.31°, p = 0.016; BP group: pre: 4.10° ± 1.87°, post: 2.94° ± 1.01°, p = 0.045), and the integrated group showed a lower absolute error in inversion angles (pre 2.24° ± 1.44° and post 1.48° ± 0.93°, p = 0.022), and an increased integrated EMG of ankle plantar flexors before landing. The plyometric group exhibited a higher integrated EMG of the tibialis anterior before and after landing (pre: 102.88 ± 20.93, post: 119.29 ± 38.33, p = 0.009 in post-landing) and a shorter adjusting time of the plantar flexor following landing as compared to the pre-training condition (pre: 2.85 ± 1.15 s, post: 1.87 ± 0.97 s, p = 0.006). In conclusion, both programs improved ankle joint position sense and muscle activation of the ankle plantar flexors during single-leg drop landing. The plyometric group showed a reduced adjusting time of the ankle plantar flexor following the impact from drop landing.

中文翻译：

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运动量和平衡训练对功能性踝关节不稳的休闲运动员神经肌肉控制的影响：随机对照实验室研究

有人建议进行体育锻炼来预防运动参与中的膝盖受伤，但有关踝体育锻炼的研究却很有限。本研究旨在研究六周综合平衡/肺量测训练和六周肺量测训练后不稳定踝关节的关节位置感觉和神经肌肉活动的变化。将30名具有功能性踝关节不稳的娱乐性运动员分为三组：体能测量组（P）vs体能测量与平衡训练组（BP）与对照组（C）。在训练期间之前和之后，测量内侧单腿下降着陆任务期间的踝关节位置感，综合肌电图（EMG）和平衡调整时间。在六周的训练后，两个训练组的足底屈曲绝对误差均较低（P组：pre：3。p = 0.016；BP组：前：4.10°±1.87°，后：2.94°±1.01°，p = 0.045），积分组的转角绝对误差较低（前2.24°±1.44°和后1.48°±0.93° ，p = 0.022），并且着陆前踝flex屈肌的肌电图增加。腹肌屈肌组着陆前后胫前肌的整合肌电图较高（着陆前为102.88±20.93，着陆后为119.29±38.33，p = 0.009），着陆后the屈的调整时间更短到训练前的条件（pre：2.85±1.15 s，post：1.87±0.97 s，p= 0.006）。总之，这两个程序都改善了单腿下降着陆期间的踝关节位置感和踝plant屈肌的激活。计测组显示，由于下降着地的影响，踝plant屈的调节时间减少了。