Abstract
Introduction: Assessing the Electromyography (EMG) activity of core muscles during various exercises might be extremely important to understand the neuro-muscular strategies used by basketball athletes with Chronic Ankle Instability (CAI). Aim: To compare the EMG activity of the core/global muscles during different functional exercises in basketball athletes with versus without CAI. Materials and Methods: A pilot study was conducted in the Department of Physiotherapy, SGT University, Gurugram, Haryana, India. A total of eight basketball players subjects aged 18-30 years with (n=4) and without CAI (n=4) were recruited using convenience sampling. Players with atleast 2 years of competitive experience were enrolled. CAI was diagnosed if there was a history of atleast two ankle inversion injuries in the same ankle for the past 2 years, which had required a period of protected weight bearing or immobilisation or any complaint of giving way of the ankle during functional activities and score of less than 24 on the Cumberland ankle instability tool. Surface EMG was recorded for multifidus, rectus abdominis, transverse abdominis and erector spinae during six functional exercises (single leg squat, Y balance exercise, quadrant hop, toe touch down, box jump and medicine ball slams). 2×5×4 repeated measures Analysis of Variance (ANOVA) was employed to test the study hypothesis. Results: A significant difference was found between the activation patterns of the core and global muscles in basketball players with CAI and without CAI. Conclusion: It can be concluded that CAI alters the activation of core and global spinal muscles significantly. CAI is not restricted to distal joint but has an impact on proximal muscles as well. Neuromuscular training for the muscles, which alters motor control strategy because of CAI, could be taken into consideration when planning rehabilitation for CAI.
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