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Determinants for Duration of Drink Breaks in J-League in 2021: Special References for COVID-19 Temporary Amendment [Football Science Vol.19, 85-89, 2022] The purpose of the present investigation was to clarify the inter-match variability and the determinants of drink break (DB) duration and its contribution to the extra-time added to the end of official matches of the Japan Professional Football League (J-League). The investigation analyzed official matches of the first division of the J-League (J1-League) in 2021. Of the total season, a final sample of 60 matches with complete videos was analyzed; thereafter, the DB durations and the additional time were obtained in the first and second halves, respectively. The results indicated that the horizontal position for restart location contributes 15.3% of the variation in DB duration, and the restart play and the number of substitutions were also selected as significant predictors for the duration of DBs (p < 0.001). The DB duration was not significantly associated with the goals scored, environmental factors, or additional time. The present investigation suggested that the time for the out-of-play associated with the DB was over 1 min, and the DB duration depended on the distance from the bench side to the location of the restarting. Regarding the inter-match variability of the DB duration, the environmental and human-dependent factors remain unclear. Keywords: soccer, football, extra-time, corona virus, infection |