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International Journal Of Medical, Pharmacy And Drug Research(IJMPD)

Dynamic Stabilization Challenges in Sport Training: How Ankle Instability Compromises Lower Extremity Balance

Yen-Tzu Huang , Ze-He Chen , Po-Han Chang


International Journal of Medical, Pharmacy and Drug Research(IJMPD), Vol-9,Issue-4, October - December 2025, Pages 1-9 , 10.22161/ijmpd.9.4.1

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Article Info: Received: 02 Sep 2025; Received in revised form: 01 Oct 2025; Accepted:05 Oct 2025; Available online: 13 Oct 2025

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Lateral ankle instability impairs neuromuscular coordination in athletes, yet evidence quantifying its functional deficits in sports majors remains fragmented. This study pioneers a comparative analysis of metrics between stable and unstable ankle groups to establish rehabilitation benchmarks. Eighteen physical education majors (CAIT-screened) were stratified into Stable (SBG, n=12) and Unstable (USBG, n=12) groups. Eight standardized tests evaluated three functional domains: dynamic balance (YBT, hurdle test), static balance (eyes-closed/unipedal stance), and explosive power (vertical/standing jumps). SPSS 20 analyzed between-group differences through independent ANOVA (α=.05) with the LSD method. SBG demonstrated superior performance in dominant-side explosive tests versus non-dominant limbs (p<.05) and USBG unstable limbs (p<.05). USBG healthy limbs matched SBG non-dominant performance in power metrics. Static balance tests greater stability in SBG non-dominant limbs compared to USBG unstable limbs (p<.05). Dynamic evaluation shows that the USBG does not perform well in complex motion modes. Chronic ankle instability alters lower extremity kinetic chains through compromised neuromuscular control and force transfer efficiency. Rehabilitation protocols should prioritize proprioceptive training and multiplanar strength development to restore functional symmetry in sports-specific movements.

dynamic equilibrium, lateral ankle injury, static balance.

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