**5. Conclusions**

With falls and fall-related injuries posing a significant threat to multiple populations, such as clinical, geriatric, athletic, occupational, and the healthy, accurate detection of ankle joint movements during postural perturbations using wearable solutions is crucial. Results from the study demonstrated that 71.25% of the trials exhibited a minimal error of less than 4.0 degrees di fference from the motion capture system and a greater than 0.60 R-squared value in the linear model, suggesting a moderate to high accuracy and minimal errors in comparing SRS with a motion capture system. Findings indicate that the stretch sensors could be a feasible option in detecting ankle joint kinematics during slips and trips. Findings from this project will help in identifying wearable solutions in early detection of fall risk and prevent falls and fall-related injuries.

**Author Contributions:** Conceptualization: H.C.; methodology: H.C.; investigation: E.S. and D.S.; resources, R.F.B.V., J.E.B., B.K.S., A.C.K. and R.K.P.; data analysis: H.C., E.S., D.S., P.N. and T.L.; writing—original draft preparation: H.C.; writing—review and editing, R.F.B.V., J.E.B., B.K.S., A.C.K. and R.K.P.; visualization: D.S., P.N., T.L. and J.E.B.; supervision: H.C.; project administration: H.C.; funding acquisition: H.C. and E.S.

**Funding:** This project and publication was supported by Grant #2T42OH008436 from the National Institute of Occupational Safety and Health (NIOSH).

**Acknowledgments:** This project and publication was supported by Grant #2T42OH008436 from the National Institute of Occupational Safety and Health (NIOSH). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of NIOSH. The research presented in this paper was partly funded by the National Science Foundation under NSF 18-511 - Partnerships for Innovation award number 1827652. The authors sincerely thank the anonymous reviewers for their valuable suggestions for improving the manuscript.

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.
