Abstract
Vision serves as a crucial determinant influencing human posture control. However, there is a paucity of research quantifying the relationship between vision intervention and motion control. The lateral shuffle is a prevalent movement pattern in sports and a representative movement associated with sports injuries. This study systematically evaluated the effects of various visual conditions (normal vision, + 150° convex lens, and + 450° convex lens) on bilateral lower limb coordination and variability at the hip-knee and knee-ankle joints during lateral shuffle movements. This study recruited 29 male college students with normal vision, with 19 participants meeting inclusion criteria (average age 19.84 ± 0.83 years, height 176.74 ± 5.55 cm, weight 68.51 ± 12.10 kg, BMI 21.84 ± 2.56 kg/m2). Kinematic data were collected using the PN3 Pro device under various visual conditions, which were then used to compute lower-limb coordination and coordination variability via the continuous relative phase method.Data analysis was performed using SPSS 24 software, with one-way repeated measures ANOVA employed to evaluate the impact of myopia severity on coordination, with effect sizes measured by partial eta squared (ηp2). Visual interventions significantly impacted lower limb coordination, demonstrating pronounced joint function gradient effects and lateral asymmetry. Compared to hip-knee coordination, knee-ankle coordination exhibited greater sensitivity to visual interference, with effect sizes ranging from moderate to large (ηp2, 0.129–0.418). Particularly under + 450° convex lens visual conditions, the effect size (ηp2) of Left knee-ankle coordination reached 0.418, explaining up to 41.8% of variance (p < 0.05). +450° convex lens conditions significantly increased coordination variability, supporting a dose-response relationship, with knee-ankle coordination showing heightened sensitivity. Interventions for varying degrees of myopia can impact lower limb postural control during lateral movements. The alterations in lower limb coordination predominantly affect the knee and ankle joints, rendering these two areas particularly susceptible to injury.
Data availability
The datasets used and/or analysed during the current study available from the corresponding author on reasonable request.
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Acknowledgements
We would like to express our gratitude to the School of Sports and Health, Zunyi Medical University for their support. We would also like to thank all the participants in the survey for their help and support in this study.
Funding
This study was supported by the 2023 Guizhou Province Basic Research Plan (Natural Science) Project (Project No: Qiankehe Foundation-ZK [2023] General 512), Zunyi Municipal Science and Technology Program: Biomechanical Characteristics and Motor Control Mechanisms of Three Lower Limb Joints in Patients with Chronic Ankle Instability at Multiple Running Speeds (Project No.: Zunshi Kehe HZzi (2025) No.285), the Project of University Humanities and Social Sciences Research of Guizhou Provincial Department of Education (Project No: 24RWZX065), as well as Zunyi Medical University National Student Innovation and Entrepreneurship Training Program (Project No. 2024106610951) .
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Huihui Wang: wrote the main manuscript text and prepared Figs. 1, 2 and 3; Table 1, and 2. Xiaonan Wu, Lin Zhang, Aochuan Xue: collected date and processed dataAll authors reviewed the manuscript.
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Wang, H., Wu, X., Zhang, L. et al. Lower-limb joint-coordination and coordination variability during lateral shuffle in colleague students with different vision acuity. Sci Rep (2026). https://doi.org/10.1038/s41598-026-40892-x
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DOI: https://doi.org/10.1038/s41598-026-40892-x
