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Lower Limb Joint Mechanics during Maximal Accelerative and Decelerative Running.

Emily Fitzwilliam, Nikolai Steventon-Lorenzen, David Opar

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Medicine and Science in Sports and Exercise
|April 11, 2024
PubMed
Summary
This summary is machine-generated.

Lower limb joints produce positive work during acceleration and negative work during deceleration. Understanding these distinct joint mechanics in acceleration and deceleration is key for athletic performance and injury prevention.

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Area of Science:

  • Biomechanics
  • Sports Science
  • Human Movement Analysis

Background:

  • Maximal acceleration and deceleration are crucial in team sports, often leading to lower limb injuries.
  • Understanding joint mechanics during these tasks is vital for improving athletic performance and injury prevention strategies.

Purpose of the Study:

  • To investigate the fundamental differences in lower limb joint mechanics between acceleration and deceleration tasks.
  • To directly compare hip, knee, and ankle joint moments and work done during maximal acceleration versus deceleration.

Main Methods:

  • Twenty participants performed maximal acceleration and deceleration trials.
  • Three-dimensional motion capture and ground reaction forces were collected.
  • Inverse dynamics analysis was used to calculate joint moments and work.

Main Results:

  • All lower limb joints exhibited positive net work during acceleration and negative net work during deceleration.
  • The ankle and hip were primary contributors to positive work in acceleration, while the knee and hip dominated negative work in deceleration.
  • Peak joint moments were generally higher during deceleration, with exceptions for ankle plantarflexion and hip flexion.

Conclusions:

  • The distinct joint work patterns during acceleration and deceleration highlight different neuromuscular strategies.
  • Findings can inform targeted training interventions to enhance acceleration/deceleration performance.
  • This research aids in developing strategies to mitigate injury risk associated with these dynamic movements.