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Updated: Jan 4, 2026

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
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Lower-limb joint mechanics during maximum acceleration sprinting.

Anthony G Schache1,2, Adrian K M Lai3, Nicholas A T Brown4

  • 1La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Bundoora, VIC 3086, Australia a.schache@latrobe.edu.au.

The Journal of Experimental Biology
|November 2, 2019
PubMed
Summary
This summary is machine-generated.

During maximum acceleration sprinting, the hip and ankle joints are key for generating positive work. Adjustments in these joints

Keywords:
AnkleHipImpulseKneeMechanical workPropulsion

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Area of Science:

  • Biomechanics
  • Human Movement Science
  • Sports Science

Background:

  • Understanding the biomechanical adjustments during maximal acceleration sprinting is crucial for performance enhancement and injury prevention.
  • The stance phase of sprinting involves complex interactions between lower-limb joints to generate forward propulsion.

Purpose of the Study:

  • To investigate how the mechanical function of the hip, knee, and ankle joints changes during the acceleration phase of sprinting.
  • To identify the primary joint contributors to positive work production during maximal acceleration.

Main Methods:

  • Experimental data including motion capture and ground reaction forces (GRF) were collected from eight sprinters.
  • An inverse-dynamics analysis was employed to calculate lower-limb joint mechanical variables.
  • Data covered the majority of the acceleration phase using varied starting positions.

Main Results:

  • Forward acceleration magnitude correlated linearly with hip extensor and ankle plantar-flexor moment impulses.
  • The ankle joint demonstrated the strongest relationship between acceleration and net work done (R²=0.64).
  • The ankle produced the greatest positive work, contributing a larger proportion as acceleration decreased.

Conclusions:

  • The hip and particularly the ankle are critical for generating positive work during the stance phase of maximal acceleration sprinting.
  • Joint mechanical function is significantly adjusted across the hip, knee, and ankle, with notable changes at the hip and ankle.