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The AFL penetrometer study: work in progress.

J Orchard1

  • 1Sports Medicine Unit, University of New South Wales, Australia.

Journal of Science and Medicine in Sport
|September 11, 2001
PubMed
Summary
This summary is machine-generated.

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Harder ground surfaces and couch grass were trending towards increased Anterior Cruciate Ligament (ACL) injury risk in Australian Football League (AFL) matches. Ground conditions may contribute to ACL injuries, with a notable decrease observed in recent seasons.

Area of Science:

  • Sports Medicine
  • Biomechanics
  • Epidemiology

Background:

  • Anterior Cruciate Ligament (ACL) injuries are a significant concern in Australian Football League (AFL).
  • Previous research suggests environmental factors may influence ACL injury risk.

Purpose of the Study:

  • To investigate the relationship between ground hardness and grass type with ACL injuries in the AFL.
  • To identify specific ground characteristics that may increase ACL injury risk.

Main Methods:

  • Measured ground hardness using a Penetrometer across 571 AFL matches from 1997-2000.
  • Recorded ACL injuries through an ongoing injury surveillance system.
  • Analyzed data for trends related to ground hardness (3-drop average < 4.5cm, first drop average < 2.5cm) and grass type (couch vs. rye).

Related Experiment Videos

Main Results:

  • A non-significant trend indicated higher ACL injury risk on harder grounds (RR 2.36 for 3-drop average < 4.5cm; RR 2.60 for first drop average < 2.5cm).
  • A non-significant trend showed increased ACL injury risk on couch grass compared to rye grass (RR 2.37).
  • Confirmed previous findings of higher ACL injury risk in early season and warmer northern venues.

Conclusions:

  • Ground hardness and grass type show trends towards increased ACL injury risk, though not statistically significant in this study.
  • Ground-related variables likely contribute to ACL injuries, alongside other factors like shoe-surface traction.
  • A significant reduction in AFL ACL injuries occurred in 1999-2000, potentially due to improved ground preparation in response to research and publicity.