AUTHOR=Xue Aochuan , Zeng Zhaohong , Wang Huihui , Han Jinming , Pang Bo 

TITLE=Kinematic characteristics of gait with different myopia: a cross-sectional study

JOURNAL=Frontiers in Public Health

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1256242

DOI=10.3389/fpubh.2023.1256242

ISSN=2296-2565

ABSTRACT=Background: Myopia, a condition affecting approximately one-quarter of the world’ s population, has been projected to double in prevalence by the year 2050. It can have an impact on postural control during walking and increase the risk of falls and injuries. Objective: 1) To examine the abnormal performance of postural control during walking in male college students who used convex lenses for myopia intervention from a kinematic perspective, and 2) to establish theoretical foundation for preventing falls and injuries in the myopic population. Methods: Subjects were selected according to inclusion criteria. Gait kinematic data was collected using a PN3 inertial sensing unit under myopic intervention. The selected indicators included changes in the center of gravity, percentage of gait cycle, and movement angles of the trunk and lower limbs. A quantitative analysis was conducted using a One-Way Repeated Measures ANOVA to examine the variations among the three groups. Results: 1) During myopic interventions, the range of vertical center of gravity changes is observed to be greater compared to individuals with normal vision(P<0.05). 2) During the myopic intervention, there was an observed increase in the percentage of time spent in single-legged support, accompanied by a decrease in the percentage of time spent in double-legged support, when compared to normal vision(P<0.05). 3) The myopic intervention leads to increased variability in joint motion angles of the hip and knee during the single-leg support and swing phases, as compared to individuals with normal vision(P<0.05); Severe myopic interventions result in more pronounced changes in ankle motion angles. Conclusion: Myopia has been found to have a negative impact on postural control during walking, leading to changes in balance, increased instability, and an elevated risk of injury.