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The Effect of Interchange Rotation Period and Number on Australian Football Running Performance
Paul G Montgomery1, Ben Wisbey
11FitSense Australia, Canberra, Australia.
Journal of Strength and Conditioning Research
|June 22, 2016
Summary
Shorter on-field playing periods improve running performance in Australian Football. Decreased running capacity occurs with longer playing intervals and fewer game rotations, highlighting the importance of interchange strategy.
Area of Science:
- Sports Science
- Exercise Physiology
- Biomechanics
Background:
- Australian Football involves high-intensity running with frequent player rotations.
- Understanding the impact of interchange strategies on player performance is crucial for optimizing game outcomes.
- Previous research has not fully elucidated the specific effects of rotation period and number on running capacity.
Purpose of the Study:
- To investigate the influence of on-field rotation duration and the total number of game rotations on Australian Football running performance.
- To quantify the changes in running capacity based on different playing time blocks and rotation frequencies.
- To provide evidence-based recommendations for interchange strategies to maintain player running performance.
Main Methods:
- Utilized Global Positioning System (GPS) data from 21 elite Australian Football players across 22 rounds.
- Analyzed 692 on-field playing periods, divided into 2:00-minute increments, assessing running performance (m·min).
- Evaluated 7,730 game rotation and average running performance combinations over three seasons using effect size and meaningful difference analyses.
Main Results:
- Running capacity declined by approximately 3% for every additional 2:00 minutes of on-field time beyond 5:00 minutes, up to 9:00 minutes.
- Specific player positions, like nomadic players, experienced greater declines in running capacity (up to 6.7%).
- Fewer than 6 rotations per game resulted in small-to-moderate decreases in running capacity (up to 3.6%) per rotation.
Conclusions:
- Shorter on-field playing periods are more effective for maintaining high running capacity in Australian Football.
- Coaches and players should consider the trade-offs between on-field duration and rotation frequency, especially under interchange restrictions.
- Optimizing interchange strategies can mitigate performance decrements and enhance overall player running capacity throughout the game.
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