Wearable inertial measurement unit to accelerometer-based training monotony and strain during a soccer season: A within-group study for starters and non-starters

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Date

2021-08-01

Author

Nobari, Hadi
Söğüt, Mustafa
Oliveira, Rafael
Pérez-Gómez, Jorge
Suzuki, Katsuhiko
Zouhal, Hassane

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The purpose of this study was to analyze the intragroup differences in weekly training monotony (TM) and training strain (TS) between starter and non-starter male professional soccer players at accelerometry-based variables throughout the periods of a season. TM and TS of different accelerations and decelerations zones for twenty-one players were followed for forty-eight weeks. Regardless of group, players obtained the highest mean TM (starters = 3.3 ± 0.6, non-starters = 2.2 ± 1.1, in arbitrary unit, AU) and TS (starters = 1288.9 ± 265.2, non-starters = 765.4 ± 547.5, AU) scores in the pre-season for accelerations at Zone 1 (<2 m/s2). The results also indicated that both groups exhibited similar TM and TS scores in accelerations at Zones 2 (2 to 4 m/s2) and 3 (>4 m/s2) across the entire season. While the starters showed the highest TM and TS scores at deceleration Zone 1 (<−2 m/s2) in the end-season, the non-starters exhibited the highest scores at the deceleration Zone 1 in pre-season. It seems that in pre-season, coaches applied higher levels of training with greater emphasis on deceleration for non-starters. This tendency was reduced over time for non-starters, while starters presented higher values of deceleration Zone 1. These results highlight the variations in TM and TS across the different periods of a full season according to match starting status among professional soccer players, and the results suggest that non-starter players should receive higher levels of load to compensate for non-participation in matches throughout a soccer season.

Subject Keywords

Football, External training load, WIMU, GPS, Acceleration, Deceleration

URI

https://hdl.handle.net/11511/91517

Journal

International Journal of Environmental Research and Public Health

DOI

https://doi.org/10.3390/ijerph18158007

Collections

Department of Physical Education and Sports, Article

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Citation Formats

H. Nobari, M. Söğüt, R. Oliveira, J. Pérez-Gómez, K. Suzuki, and H. Zouhal, “Wearable inertial measurement unit to accelerometer-based training monotony and strain during a soccer season: A within-group study for starters and non-starters,” International Journal of Environmental Research and Public Health, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/91517.