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A total of 48 youth soccer players (24\u2009U-13 and 24\u2009U-14) took part in the study, playing three different SSGs: regular 3vs3, 1-floater condition (one floater playing for both teams), and 2-floater condition (one floater per team, with alternate participation). Positional data were collected by 5\u2009Hz GPS devices, generating individual (spatial exploration index) and collective (team\u2019s length, width, length per width ratio, and stretching index) positional variables. The results revealed that the 2-floater format significantly reduced the length (p\u2009=\u20090.001), and both formats with floaters increased the width (p\u2009&lt;\u20090.001). Also, the 1-floater format presented the lowest stretching index (p\u2009&lt;\u20090.001). Concerning age-group differences, older players presented higher values of length (p\u2009&lt;\u20090.001), length per width ratio (p\u2009&lt;\u20090.001), and spatial exploration index (p\u2009&lt;\u20090.001) than their younger counterparts. The 2-floater SSG format is a more facilitated and simplified version of numerically unbalanced SSGs, which might be considered by coaches when designing tasks adjusted to the level of the athletes.<\/jats:p>","DOI":"10.1177\/17479541211017448","type":"journal-article","created":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T21:56:20Z","timestamp":1621029380000},"page":"46-53","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Designing facilitated task constraints for different age groups in soccer: The impact of floaters\u2019 rules"],"prefix":"10.1177","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9971-7308","authenticated-orcid":false,"given":"Gibson Moreira","family":"Pra\u00e7a","sequence":"first","affiliation":[{"name":"Sports Department, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil"}]},{"given":"Pedro Em\u00edlio Drumond","family":"Moreira","sequence":"additional","affiliation":[{"name":"Sports Department, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil"}]},{"given":"Marcelo","family":"Rochael","sequence":"additional","affiliation":[{"name":"Sports Department, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil"}]},{"given":"Gustavo","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Sports Department, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil"}]},{"given":"Bruno","family":"Travassos","sequence":"additional","affiliation":[{"name":"Department of Sport Sciences, Universidade da Beira Interior, Covilh\u00e3, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, Portugal"},{"name":"Portugal Football School, Portuguese Football Federation, FPF, Oeiras, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2021,5,14]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000002978"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1177\/1747954118812072"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1080\/17408989.2019.1580689"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1080\/24748668.2019.1705642"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.chaos.2020.109710"},{"key":"e_1_3_2_7_2","article-title":"How playing area dimension and number of players constrain football performance during unbalanced ball possession games","author":"Nunes NA","unstructured":"Nunes NA, Gon\u00e7alves B, Coutinho D, et\u00a0al. 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