**5. Conclusions**

In the current study, the association between the collar condition of football shoes and ankle biomechanics and dynamic postural stability was analyzed. Ankle joint ROM and MLSI during a single-leg jump landing were reduced and improved as the height of the collar increased, respectively. In addition, higher ankle joint stiffness was found for the high collar, compared to the low collar football shoe. Ankle biomechanics and MLSI information from different collar types may be useful in designing football footwear and implementing training. Future prospective investigations are warranted to determine the influence of different shoe collar heights, ankle kinematics/kinetics, and DPSI on lower extremity risks.

**Author Contributions:** This paper is a result of the collaboration of all authors. All authors have previous experience in sport biomechanics that was shared in order to reach the results discussed in this paper. Conceptualization: Y.T. and Z.W.; data curation: Z.W. and Y.Z.; formal analysis: Y.T. and J.P.; funding acquisition: Y.L.; investigation: Y.Z.; methodology: Y.Z. and S.W.; project administration: Y.L. and J.P.; resources: Y.T. and Y.L.; software: Z.W. and J.P.; supervision: Y.L.; validation: S.Z., S.W., and Y.L.; visualization: Z.W.; writing—original draft: Y.T.; writing—review and editing: S.Z., Y.L., and J.P. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the National Natural Science Foundation of China (No. 11932013) and the National Key Research and Development Program of China (2018YFF0300501).

**Acknowledgments:** The authors thank all participants for their contributions.

**Conflicts of Interest:** The authors declare no conflicts of interest.
