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The effect of changing foot progression angle using real-time visual feedback on rearfoot eversion during running
Seyed Hamed Mousavi1,2,3, Laurens van Kouwenhove1, Reza Rajabi2
1Department of Rehabilitation Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Plos One
|February 10, 2021
Summary
Gait retraining using toe-in running can reduce rearfoot eversion and improve biomechanics, potentially preventing running injuries. This method offers a novel approach to modifying atypical foot mechanics.
Area of Science:
- Biomechanics
- Sports Medicine
- Gait Analysis
Background:
- Atypical rearfoot in/eversion is a significant risk factor for running-related injuries.
- Current interventions like orthoses, footwear, and taping do not address gait retraining for rearfoot eversion.
- A need exists for gait modification strategies to correct atypical rearfoot in/eversion.
Purpose of the Study:
- To investigate the effects of toe-in and toe-out running on rearfoot in/eversion, subtalar pronation, and medial longitudinal arch angle.
- To analyze changes in lower limb joint biomechanics during altered foot progression angles.
- To evaluate the efficacy of real-time visual feedback in modifying gait for rearfoot eversion correction.
Main Methods:
- Fifteen female runners participated in a study involving real-time visual feedback for foot progression angle.
- Subjects performed habitual, toe-in, and toe-out running conditions (±5° from habitual angle).
- Three-dimensional kinematics of rearfoot, subtalar joint, medial longitudinal arch, foot progression angle, and lower limb joints were analyzed.
Main Results:
- Toe-in running significantly reduced peak rearfoot eversion, peak pronation, and peak medial longitudinal arch angle compared to normal and toe-out running.
- Toe-out running increased these kinematic factors compared to normal and toe-in running.
- Toe-in running altered hip and knee joint kinematics, while toe-out running affected hip, knee, and ankle joint biomechanics.
Conclusions:
- Runners can modify their foot progression angle using real-time visual feedback.
- Toe-in/toe-out running effectively alters rearfoot kinematics and medial longitudinal arch angle.
- Gait retraining focused on foot progression angle with real-time feedback shows potential for modifying atypical rearfoot in/eversion and preventing injuries.
