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Journal Article

Time-on-field distribution of soccer squads in the German U17 and U19 Bundesliga

Claudia Augste; Maurice Koller; Bettina Schröpf; Martin Lames
German Journal of Exercise and Sport Research · Vol. 56, Issue 1 · pp. 120-128 · 2026

Abstract

Background A current reform in German youth soccer intends to promote individual talent development. The aim of our study was to investigate the distribution of time on the field (ToF) among a team’s squad members as a marker for a club’s strategies of talent development. Methods The study included 1176 teams comprising 33,483 players of the German U19 and U17 Bundesliga over a period of 16 years. We calculated a team’s Gini index and self-designed variables to characterize the ToF distribution across the players of a squad. Results On average, squads consisted of 29.9 (± 4.3) players, showing a partially increasing trend. The mean Gini index was 44.8% (± 5.9), indicating a rather uneven distribution among the squad members. Overall, 50% of the team’s available playing time was shared by 7.8 (± 0.6) players (variable NPL-50%PT). The 11 most fielded players received 73.1% (± 5.0) of the team’s playing time (variable %PT-11PL). We found significant correlations between these indicators and the team’s final rank in the season’s table for both U17 and U19 (all p < 0.001). A significant correlation between a club’s U17 and U19 teams for %PT-11PL suggests stable club strategies for the distribution of ToF. Conclusion The findings reflect club strategies of favoring short-term competitive success rather than long-term talent development under the previous competition structure. This underscores the necessity of the reform and highlights the importance of a thorough evaluation based on our benchmarks and methodological tools to prevent undesired side effects such as increasing squad sizes.

Bibliographic Information

JournalGerman Journal of Exercise and Sport Research
PublisherSpringer
Publication Date2026-03-01
Publication Year2026
Volume56
Issue1
Pages120-128
Document TypeJournal Article
Print ISSN2509-3142
eISSN2509-3150
DOI10.1007/s12662-025-01085-2

Access Information

NARA Access Coverage1971-01-01~Current
Journal Homepagehttps://www.springer.com/journal/12662
Publisher PageOpen Publisher Page
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