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Monitoring game load across quarters in professional basketball: positional differences and contextual effects
Shaoliang Zhang1, Ming Li1, Xing Wang2
1Athletic Performance and Data Science Laboratory (APDS), Division of Sports Science and Physical Education, Tsinghua University, Beijing, China.
Biology of Sport
|June 1, 2026
Summary
Basketball players experience varying game loads based on position. Backcourt players show increased exertion later in games, while frontcourt players decrease explosive movements. Positional differences highlight the need for tailored load management strategies.
Area of Science:
- Sports Science
- Biomechanics
- Exercise Physiology
Background:
- Understanding game-specific load variations is crucial for athlete management in professional basketball.
- Positional differences in physical demands between backcourt and frontcourt players are not fully elucidated.
- The relationship between objective external load measures and subjective internal load requires further investigation.
Purpose of the Study:
- To analyze quarter-to-quarter changes in external and internal loads in professional basketball players.
- To investigate the correlations between rating of perceived exertion (RPE) and external load metrics.
- To examine how contextual factors, such as game outcome, influence player loads based on playing position.
Main Methods:
- 16 male professional basketball players (8 backcourt, 8 frontcourt) were monitored using Catapult S7 devices for PlayerLoad™ (PL) and Inertial Movement Analysis (IMA) metrics.
- Internal load was assessed using the rating of perceived exertion (RPE) scale.
- Data were analyzed for quarter-to-quarter variations, correlations between loads, and effects of positional and contextual factors.
Main Results:
- Frontcourt players exhibited decreased change of direction and explosive efforts in later quarters.
- Backcourt players reported higher RPE and PL in the fourth quarter compared to the first.
- RPE showed moderate to large correlations with PL and high-intensity jumps; backcourt players reported higher RPE in wins versus losses.
Conclusions:
- Significant positional differences exist in basketball game load profiles.
- External and internal loads fluctuate throughout games, influenced by player position.
- Context-specific load management strategies are essential for optimizing recovery in basketball players.
