不同踝关节支具对功能性踝关节不稳运动员肌肉疲劳后单腿侧向跳落地的影响。
Effects of Different Ankle Supports on the Single-Leg Lateral Drop Landing Following Muscle Fatigue in Athletes with Functional Ankle Instability.
机构信息
Department of Physical Therapy, Tzu Hui Institute of Technology, Pingtung 926001, Taiwan.
Department of Product Design, College of Design, Tainan University of Technology, Tainan 71002, Taiwan.
出版信息
Int J Environ Res Public Health. 2020 May 14;17(10):3438. doi: 10.3390/ijerph17103438.
BACKGROUND
Ankle support has been utilized for athletes with functional ankle instability (FAI), however, its effect on the landing performance during muscle fatigue is not well understood. This study aimed to examine the effects of ankle supports (ankle brace vs. Kinesio tape) on athletes with FAI following fatigued single-leg landing.
METHODS
Thirty-three young FAI athletes (CAIT scores < 24) were randomly allocated to control (Cn), ankle brace (AB) and Kinesio tape (KT) groups. All athletes performed single-leg lateral drop landings following ankle fatigue protocol. The fatigue-induced changes in kinetic parameters were measured among three groups.
RESULTS
A significant increase in peak vertical ground reaction force (vGRF) was found in the AB group (0.12% body weight (BW)) compared to that of the KT (0.02% BW) and Cn (median = 0.01% BW) groups. Significant decrease in both COP medial-lateral (ML) and anterior-posterior (AP) ranges were also found in the KT group (median = -0.15% foot width (FW) & median = -0.28% foot length (FL)) than those of the Cn group (median = 0.67% FW& median = 0.88% FL).
CONCLUSIONS
Ankle braces might hamper the ability to absorb the impact force during landing. On the other hand, Kinesio tape might be beneficial for the postural control during landing.
背景
踝关节支撑已被用于有功能性踝关节不稳（FAI）的运动员，但在肌肉疲劳期间对其着陆性能的影响尚不清楚。本研究旨在研究在疲劳性单腿着陆后，踝关节支撑（踝关节支具与肌内效贴布）对 FAI 运动员的影响。
方法
33 名年轻的 FAI 运动员（CAIT 评分<24）被随机分配到对照组（Cn）、踝关节支具（AB）和肌内效贴布（KT）组。所有运动员均在疲劳性单腿侧向跌落着陆方案后进行单腿侧向跌落着陆。在三组中测量疲劳诱导的动力学参数变化。
结果
与 KT（0.02% BW）和 Cn（中位数=0.01% BW）组相比，AB 组（0.12%体重（BW））的峰值垂直地面反作用力（vGRF）显著增加。KT 组（中位数=-0.15%足宽（FW）和中位数=-0.28%足长（FL））的 COP 内外侧（ML）和前后（AP）范围也显著减小，而 Cn 组（中位数=0.67% FW 和中位数=0.88% FL）。
结论
踝关节支具可能会阻碍在着陆时吸收冲击力的能力。另一方面，肌内效贴布可能有益于着陆时的姿势控制。
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