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. 2023 May 16;5:1151828. doi: 10.3389/fspor.2023.1151828

Table 1.

Definitions and units of the external load measures included in the analysis.

External load measure Unit Definition
Accelerations [n] Acceleration efforts performed between 4 and 10 m/s2 with a minimum duration of 0.5 s
Decelerations [n] Deceleration efforts performed between 4 and 10 m/s2 with a minimum duration of 0.5 s
Dynamic stress load [a.u.] The total of the weighted impacts, which is based on accelerometer values of magnitude above 2 g. This measure weights the impacts using a convex-shaped function. The aggregated weighted impacts are scaled to provide more workable values.
High metabolic load distance [m] The distance [m] covered by a player performing any activity with a metabolic power (energy consumption per kilogram per second) of ≥25.5 W/kg for at least 1 s.
High-speed distance
 Absolute [m] Distance ≥19.8 km/h (5.5 m/s).
 Relative [m] Distance ≥55% of individual maximal speed.
Sprint distance
 Absolute [m] Distance ≥25.2 km/h (7 m/s).
 Relative [m] Distance ≥70% of individual maximal speed.
Total distance [m] Total distance covered.
Total loading [a.u.] The total force on the player over the entire session based on accelerometer data alone and without any weightings. It uses the magnitude of the accelerometer values taken in three directions, sampled with 100 Hz. The total is scaled by 1,000 to provide more workable values.
Total time [min] Total session time.

a.u., arbitrary units.