Zhou Zhifeng, Xu Datao, Wang Meizi, Jie Tianle, Baker Julien S, Zhou Huiyu, Gu Yaodong
Faculty of Sports Science, Ningbo University, Ningbo 315211, China.
Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR 999077, China.
Bioengineering (Basel). 2024 Dec 6;11(12):1237. doi: 10.3390/bioengineering11121237.
Ankle sprains are a common injury among athletes and the general population, with chronic ankle instability (CAI) being a frequent complication. CAI patients often display altered neuromuscular control adaptations. This study analyzed muscle synergy patterns in 20 CAI patients during anticipated and unanticipated landing tasks to understand their neuromuscular adaptation strategies. Using Nesterov non-negative matrix factorization and K-means clustering, the study identified distinct muscle activation patterns. Results indicated that during unanticipated landings, the gluteus maximus and vastus lateralis showed increased activation weight, while the medial gastrocnemius was more active in anticipated landings. This study highlights that CAI patients display unique muscle synergy patterns during unanticipated landings, relying more on proximal muscles such as the gluteus maximus and vastus lateralis. This adaptation reflects the proximal muscle strategy to enhance stability and compensate for impaired ankle function in unpredictable situations.
踝关节扭伤在运动员和普通人群中都是常见的损伤，慢性踝关节不稳（CAI）是一种常见的并发症。CAI患者常常表现出神经肌肉控制适应性的改变。本研究分析了20例CAI患者在预期和意外落地任务中的肌肉协同模式，以了解他们的神经肌肉适应策略。通过使用涅斯捷罗夫非负矩阵分解和K均值聚类，该研究确定了不同的肌肉激活模式。结果表明，在意外落地时，臀大肌和股外侧肌的激活权重增加，而在预期落地时，腓肠肌内侧头更为活跃。本研究强调，CAI患者在意外落地时表现出独特的肌肉协同模式，更多地依赖于近端肌肉，如臀大肌和股外侧肌。这种适应性反映了近端肌肉策略，以增强稳定性并在不可预测的情况下补偿受损的踝关节功能。
