What does this research mean for the field?

Individuals with a history of lateral ankle sprain, including both those with chronic ankle instability and those traditionally considered functionally recovered (copers), exhibit increased visual reliance and latent sensorimotor dysfunction during reactive postural control compared to healthy controls. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

To determine the impact of visual disruption on reactive postural control following unanticipated perturbations in individuals with chronic ankle instability, ankle sprain copers, and healthy controls.

August 30, 2026Medicine & Science in Sports & Exercise

Visual Reliance During Reactive Postural Control Following Unanticipated Perturbations in Chronic Ankle Instability and Ankle Sprain Copers

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To determine the impact of visual disruption on reactive postural control following unanticipated perturbations in individuals with chronic ankle instability, ankle sprain copers, and healthy controls.
Assessed 45 participants (N=15 per group: chronic ankle instability, ankle sprain copers, and healthy controls) during single-leg stance on a robotic force-plate system.
Delivered unanticipated medial and lateral perturbations under eyes-open and stroboscopic vision conditions, measuring resultant vector time to stabilization (RVTTS) and Romberg ratios.
Significant group × visual condition interactions occurred for RVTTS during medial (F(2,42) = 7.12, P = 0.002) and lateral perturbations (F(2,42) = 6.14, P = 0.005).
Under stroboscopic vision, RVTTS was significantly longer in chronic ankle instability and coper groups compared to controls (P < 0.001 to 0.004), whereas eyes-open performance did not differ across groups (P = 0.051 to 0.612).
Romberg ratios were significantly higher in instability and coper groups versus controls for medial (P = 0.002 to 0.007) and lateral perturbations (P = 0.007 to 0.035), with no differences between copers and instability patients (P = 0.134 to 0.359).

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Implication

Comparative study reveals elevated visual reliance during reactive balance in individuals with ankle sprain history, indicating latent sensorimotor deficits even among recovered copers.

Cite This Study

Kim et al. (2026) studied this question.

synapsesocial.com/papers/6a93f07a6c1a8fb52e79cb05 https://doi.org/10.1249/mss.0000000000004126

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Implication

Comparative study reveals elevated visual reliance during reactive balance in individuals with ankle sprain history, indicating latent sensorimotor deficits even among recovered copers.

Visual Reliance During Reactive Postural Control Following Unanticipated Perturbations in Chronic Ankle Instability and Ankle Sprain Copers

Key Points

Discussion

Implication

Cite This Study

Visual Reliance During Reactive Postural Control Following Unanticipated Perturbations in Chronic Ankle Instability and Ankle Sprain Copers

Key Points

Discussion

Implication

Cite This Study

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