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Training Load and Acute Performance Decrement in Soccer
Marco Montini1, Alessandro Scotto di Palumbo2, Valerio Cotugno1
1Department of Sport Performance and Research, Rome City Institute, Rome, Italy.
International Journal of Sports Physiology and Performance
|September 30, 2025
Summary
Soccer training metrics often fail to predict acute performance decrement (APD). The National Aeronautics and Space Administration Task Load Index (NASA-TLX) better reflects APD, suggesting a need to revise training intensity and duration combinations.
Area of Science:
- Sports Science
- Exercise Physiology
- Soccer Performance Analysis
Background:
- Soccer training involves varied intensities and durations.
- Acute performance decrement (APD) can impact player readiness.
- Existing training metrics may not accurately reflect performance impacts.
Purpose of the Study:
- To investigate the association between common soccer training metrics and APD.
- To determine how different training session types affect APD.
- To identify reliable metrics for monitoring training load and performance impact.
Main Methods:
- 16 male soccer players participated in randomized training sessions (small-sided game, passing/shooting drill, technical drills).
- Yo-Yo Intermittent Recovery level 2 test (Yo-Yo IR2) measured performance before and after training.
- Training load was quantified using training impulse, perceived exertion, movement load, energy expenditure, total distance, and NASA-TLX.
Main Results:
- APD was significantly higher after small-sided games and passing/shooting drills compared to technical drills.
- Most training metrics (training impulse, perceived exertion, movement load, energy expenditure, total distance) did not correlate with APD.
- NASA-TLX scores showed a strong resemblance to APD responses.
Conclusions:
- Common soccer training metrics may not accurately predict acute performance decrements.
- The NASA-TLX appears to be a more sensitive indicator of training-induced performance changes.
- Soccer training prescription should consider revising the combination of intensity and duration, potentially using NASA-TLX for monitoring.
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