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Updated: Sep 13, 2025

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
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Kinematic Sequencing of the Football Pass Using Inertial Motion Analysis.

Andre Labbe1, William Foret2, Madison Troy1

  • 1Department of Orthopedics Tulane University Medical School.

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PubMed
Summary
This summary is machine-generated.

This study analyzed the kinematic sequencing of football quarterback passes using wireless motion technology. Results show specific joint movements, offering insights into throwing biomechanics for quarterbacks.

Keywords:
biomechanicship-shoulderquarterbackthrowing

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Area of Science:

  • Biomechanics
  • Sports Science
  • Human Movement Analysis

Background:

  • Overhead throwing biomechanics are well-researched in baseball.
  • Limited research exists on the specific biomechanics of football quarterback passing.

Purpose of the Study:

  • To identify the kinematic sequencing of a football quarterback's pass.
  • Utilize wireless inertial motion technology for data collection.

Main Methods:

  • Pilot descriptive cross-sectional study with eight quarterbacks.
  • Collected kinematic data using wireless inertial measurement units (IMUs).
  • Analyzed data at key points: foot contact, maximal external rotation, ball release, and maximal internal rotation.

Main Results:

  • Shoulder abduction and external rotation peaked at 112° and 134° respectively.
  • Trunk rotation initiated rightward then reversed leftward.
  • Hip-shoulder separation showed minimal value (11°) at ball release.

Conclusions:

  • Stride knee flexion remained consistent, while trunk movement shifted.
  • The study provides initial insights into quarterback kinematic sequencing.
  • Further research using IMUs for quarterback pass evaluation is recommended.