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Introduction <p>Athletes exhibit different limb kinematics when sprinting in a&#xa0;curve (curvilinear) compared to sprinting in a&#xa0;straight line (linear). However, it is unclear to what extent these changes are reflected in changes in the underlying dynamics, in particular the joint contact forces. It is important to increase our knowledge in this area to understand the different roles of the legs during curve sprinting and any associated differences in joint loading. The aim of this study was to investigate differences in predicted shear joint contact forces (shearJCFs) of the lower extremities during sprinting in curves with different degrees of curvature and during straight running.</p> Methods <p>Twelve experienced sprinters sprinted 100 m on the straight, the inner and outer curve of a&#xa0;400 m track. Kinematics were recorded using full-body motion capture suits. A&#xa0;musculoskeletal model estimated the corresponding shearJCFs for the hip, knee and ankle joints. The data were analysed using generalised linear mixed models.</p> Results <p>Significantly different shearJCFs were found between curve and straight-line sprinting in the hip and ankle, but not in the knee. Additionally, there were significant differences between left and right shearJCFs in the hip and ankle joint in all lanes.</p> Conclusion <p>Based on the results, we suggest that specific strength training be introduced to meet the demands of curve sprinting, which focuses on the ankle and the surrounding muscles. Athletes returning from joint injuries could also benefit from the results by becoming aware of conditions that lead to high joint loading.</p>

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Joint contact forces of the lower extremity during straight-line and curved sprinting

  • 期刊论文

  • 发表日期：

    2025年1月15日

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  • Meike Gerlach,
  • Myriam Lauren De Graaf,
  • Kim Joris Boström,
  • Heiko Wagner

摘要

Introduction

Athletes exhibit different limb kinematics when sprinting in a curve (curvilinear) compared to sprinting in a straight line (linear). However, it is unclear to what extent these changes are reflected in changes in the underlying dynamics, in particular the joint contact forces. It is important to increase our knowledge in this area to understand the different roles of the legs during curve sprinting and any associated differences in joint loading. The aim of this study was to investigate differences in predicted shear joint contact forces (shearJCFs) of the lower extremities during sprinting in curves with different degrees of curvature and during straight running.

Methods

Twelve experienced sprinters sprinted 100 m on the straight, the inner and outer curve of a 400 m track. Kinematics were recorded using full-body motion capture suits. A musculoskeletal model estimated the corresponding shearJCFs for the hip, knee and ankle joints. The data were analysed using generalised linear mixed models.

Results

Significantly different shearJCFs were found between curve and straight-line sprinting in the hip and ankle, but not in the knee. Additionally, there were significant differences between left and right shearJCFs in the hip and ankle joint in all lanes.

Conclusion

Based on the results, we suggest that specific strength training be introduced to meet the demands of curve sprinting, which focuses on the ankle and the surrounding muscles. Athletes returning from joint injuries could also benefit from the results by becoming aware of conditions that lead to high joint loading.