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A Coding System to Quantify Powerful Actions in Soccer Match Play: A Pilot Study.

Conall F Murtagh1,2, Robert J Naughton3,4, Allistair P McRobert1

  • 1a Liverpool John Moores University.

Research Quarterly for Exercise and Sport
|March 19, 2019
PubMed
Summary
This summary is machine-generated.

Elite youth soccer players primarily perform short-duration accelerations, not sprints or jumps. This study developed a reliable system to quantify these powerful actions in match play.

Keywords:
Locomotionbiomechanicsmovement componentspediatric exercise

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Area of Science:

  • Sports Science
  • Performance Analysis
  • Biomechanics

Background:

  • Elite soccer demands high power output, but specific maximal power assessment criteria are lacking.
  • Understanding the frequency and duration of powerful actions is crucial for training optimization.

Purpose of the Study:

  • To develop a reliable soccer-specific powerful action (SSPA) notational analysis coding system.
  • To compare the frequency and duration of SSPAs during elite youth soccer matches.

Main Methods:

  • Recorded 16 elite male English Premier League Academy players across 16 matches.
  • Utilized performance analysis software to code SSPAs: initial acceleration, leading acceleration, sprint, unilateral jump, and bilateral jump.
  • Ensured coding system reliability through inter- and intra-rater analysis (kappa coefficients ≥ 0.827).

Main Results:

  • Elite youth soccer players performed significantly more initial (31±9) and leading (37±12) accelerations than sprints (8±3) and jumps (6±5).
  • Accelerations were predominantly short-duration (< 1.5 s), with significantly more actions below this threshold compared to above.
  • The SSPA coding system demonstrated high reliability for quantifying powerful actions.

Conclusions:

  • The developed SSPA coding system is a reliable tool for quantifying powerful actions in elite soccer.
  • Short-duration horizontal accelerations (< 1.5 s) are the most dominant powerful actions in elite youth soccer match play.
  • Findings inform maximal power assessment and development criteria for elite youth soccer players.