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Related Experiment Video

Updated: May 14, 2026

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
06:52

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

Published on: May 26, 2020

Development and Validation of a Kinetics Prediction Model for Football Cutting Using a Single Trunk-Mounted IMU.

Inae Kim1, Soo-Ji Han2, Joong Hyun Ryu3

  • 1Department of Physical Education, Graduate School, Pukyong National University, Busan 48513, Republic of Korea.

Sensors (Basel, Switzerland)
|May 13, 2026
PubMed
Summary

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A trunk-mounted inertial measurement unit (IMU) can reliably estimate lower-limb forces and moments during football cutting. This wearable sensor approach offers a practical method for monitoring athlete loading.

Area of Science:

  • Biomechanics
  • Sports Science
  • Wearable Technology

Background:

  • Accurate kinetic measurement is crucial for understanding football injuries.
  • Traditional motion capture is lab-based and lacks real-world applicability.
  • Wearable inertial measurement units (IMUs) offer a portable solution for biomechanical analysis.

Purpose of the Study:

  • To estimate vertical ground reaction force (vGRF) and lower-limb joint moments during football cutting.
  • To validate the feasibility of using a trunk-mounted IMU with a Random Forest model.
  • To establish a foundation for wearable-based kinetic monitoring in football.

Main Methods:

  • Collected IMU data during 45° football cutting tasks.
  • Applied an Extended Kalman Filter (EKF) for data correction.
Keywords:
cuttinginertial measurement unitjoint momentmachine learningvertical ground reaction force

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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

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Last Updated: May 14, 2026

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
06:52

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

Published on: May 26, 2020

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

  • Utilized a Random Forest model to estimate vGRF and joint moments.

    • Main Results:

    • The model showed good performance for vGRF (R²=0.766, r=0.796) and sagittal ankle/knee moments (R²=0.661-0.689, r=0.807-0.842).
    • Bland-Altman analysis indicated low bias and good agreement.
    • Individual-trial precision and non-sagittal moment accuracy were influenced by movement variability.

    Conclusions:

    • A single trunk-mounted IMU can reliably estimate key lower-limb loading patterns in football.
    • This approach provides a practical foundation for wearable kinetic monitoring.
    • Further validation may be needed for subject-independent application.