Danger zone assessment in small-sided recreational football: providing data for consideration in relation to COVID-19 transmission

Autor: Zoran Milanović, Magni Mohr, Peter Krustrup, Morten B Randers, Nikolas Sten Knudsen, Manuel Mounir Demetry Thomasen, Jeppe Panduro, Malte Nejst Larsen, Thomas Bull Andersen
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: BMJ Open Sport & Exercise Medicine, Vol 7, Iss 1 (2021)
Druh dokumentu: article
ISSN: 2055-7647
DOI: 10.1136/bmjsem-2020-000911
Popis: Objectives This study investigated time spent with close contact (danger zone (DZ) within 1.5 m), number of contacts and time per contact, and compared game formats in recreational small-sided football games for young and adult male football players.Methods Movement analyses were performed on 10 Hz Global Positioning System (GPS) data collected during various small-sided football games prior to the COVID-19 outbreak.Results Time spent in the DZ was 4.3–7.9 s/h per per cent infected players, corresponding to 34.3–114.8 s/h if one player was infected. Number of contacts with one infected player was 23.5–87.7 per hour, with an average contact time of 1.1–1.4 s, and a total number of contacts of 311–691 per hour with all players. 53%–65% of all contacts were shorter than 1 s and 77%–85% shorter than 2 s. Trivial to small effects were found for number of participants and area per player, whereas standard of play and playing with/without boards had no effect.Conclusion This study demonstrated that during small-sided football limited time is spent within DZ and that player contacts are brief. Recreational football may therefore more appropriately be deemed as sporting activity with brief, sporadic contact.
Databáze: Directory of Open Access Journals