Assessment of Postural Stability Strategy and Neuromuscular Control during Landing among Athletes with CAI, Coper, and Healthy Control

Autor: Lin, Jian-Zhi, 林建志
Rok vydání: 2018
Druh dokumentu: 學位論文 ; thesis
Popis: 106
Purpose: The purpose of this study was to assessment of postural stability strategy and neuromuscular control during landing among athletes with chronic ankle instability (CAI), Coper, and healthy control. To find out what affect stability movement strategy of CAI. And to prevent Coper development to CAI during irreversible process of ankle sprain. Method: All participants had to complete a Cumberland ankle instability tool to define Healthy, Copers and CAI groups. There were 30 collegiate Division I athletes volunteered for this study. All participants needed to complete jump-landing protocol (forward jump, side hop, and bounce drop jump). Participants were asked to perform a jump followed with a single-leg landing. When landing with single-leg, participants were asked to maintain their balance for 5 seconds. Ten Vicon infrared cameras (200 Hz), three Kistler force platform (1000 Hz), and eight Delysis wireless EMG sensors (1000 Hz) were synchronized to acquire the lower extremity kinematic, kinetics, and EMG data. One-way ANOVA was conducted to compare the differences of lower extremity biomechanics data during jump-landing among CAI, Coper, and healthy control groups. The significant level was set at α = .05. Post hoc comparisons were performed using the Scheffe’s test, if statistical significance was found among the groups. Results: The major finding of CAI athletes: 1. The ankle range of motion in sagittal plane was influenced by limited ankle dorsiflexion. 2. The variation of ankle range of motion was obvious in frontal plane. 3. The angular velocity of inversion was earlier and bigger in initial contact. 4. There was neuromuscular control deficit in peroneal longus and gluteus medius muscles. 5. The landing strategy of Coper was similar to CAI. Conclusion: Even though fully healed after ankle sprain, the athletes with CAI still had deficits to repeated occurrence of instability. Therefore, we suggested that training programs of ankle range of motion and neuromuscular control is necessary to prevent recurrent ankle sprain.
Databáze: Networked Digital Library of Theses & Dissertations
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