{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T16:11:47Z","timestamp":1772554307823,"version":"3.50.1"},"reference-count":44,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,2,16]],"date-time":"2023-02-16T00:00:00Z","timestamp":1676505600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Swiss National Science Foundation","award":["51NF40-185901"],"award-info":[{"award-number":["51NF40-185901"]}]},{"name":"Swiss National Science Foundation","award":["10001C_189407"],"award-info":[{"award-number":["10001C_189407"]}]},{"name":"Swiss National Science Foundation","award":["UIDB\/50009\/2020"],"award-info":[{"award-number":["UIDB\/50009\/2020"]}]},{"name":"Swiss National Science Foundation","award":["M1420-01-0247-FEDER-000033"],"award-info":[{"award-number":["M1420-01-0247-FEDER-000033"]}]},{"DOI":"10.13039\/501100001711","name":"Swiss National Science Foundation","doi-asserted-by":"publisher","award":["51NF40-185901"],"award-info":[{"award-number":["51NF40-185901"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001711","name":"Swiss National Science Foundation","doi-asserted-by":"publisher","award":["10001C_189407"],"award-info":[{"award-number":["10001C_189407"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001711","name":"Swiss National Science Foundation","doi-asserted-by":"publisher","award":["UIDB\/50009\/2020"],"award-info":[{"award-number":["UIDB\/50009\/2020"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001711","name":"Swiss National Science Foundation","doi-asserted-by":"publisher","award":["M1420-01-0247-FEDER-000033"],"award-info":[{"award-number":["M1420-01-0247-FEDER-000033"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"name":"LARSyS\u2014Portuguese national funding agency for science, research, and technology (FCT) pluriannual funding 2020\u20132023","award":["51NF40-185901"],"award-info":[{"award-number":["51NF40-185901"]}]},{"name":"LARSyS\u2014Portuguese national funding agency for science, research, and technology (FCT) pluriannual funding 2020\u20132023","award":["10001C_189407"],"award-info":[{"award-number":["10001C_189407"]}]},{"name":"LARSyS\u2014Portuguese national funding agency for science, research, and technology (FCT) pluriannual funding 2020\u20132023","award":["UIDB\/50009\/2020"],"award-info":[{"award-number":["UIDB\/50009\/2020"]}]},{"name":"LARSyS\u2014Portuguese national funding agency for science, research, and technology (FCT) pluriannual funding 2020\u20132023","award":["M1420-01-0247-FEDER-000033"],"award-info":[{"award-number":["M1420-01-0247-FEDER-000033"]}]},{"name":"System of Incentives for the Production of Scientific and Technological Knowledge in the Autonomous Region of Madeira\u2014PROCi\u00eancia 2020","award":["51NF40-185901"],"award-info":[{"award-number":["51NF40-185901"]}]},{"name":"System of Incentives for the Production of Scientific and Technological Knowledge in the Autonomous Region of Madeira\u2014PROCi\u00eancia 2020","award":["10001C_189407"],"award-info":[{"award-number":["10001C_189407"]}]},{"name":"System of Incentives for the Production of Scientific and Technological Knowledge in the Autonomous Region of Madeira\u2014PROCi\u00eancia 2020","award":["UIDB\/50009\/2020"],"award-info":[{"award-number":["UIDB\/50009\/2020"]}]},{"name":"System of Incentives for the Production of Scientific and Technological Knowledge in the Autonomous Region of Madeira\u2014PROCi\u00eancia 2020","award":["M1420-01-0247-FEDER-000033"],"award-info":[{"award-number":["M1420-01-0247-FEDER-000033"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Children"],"abstract":"<jats:p>Sports participation is one of the most popular forms of physical activity among youngsters. This study aimed to examine the changes in the estimated body composition, strength, and flexibility of adolescent boys after 12 months of soccer training compared with those of age-matched controls with non-sports participation. We assessed 137 boys (62 soccer players and 75 controls) at baseline (TM1) and 12 months later (TM2). The differences in estimated body composition, strength, and flexibility were investigated using a repeated measure analysis of variance. The analysis revealed a significant main effect of soccer training on fat mass (F = 73.503, p \u2264 0.01, \u03b72 = 0.59) and fat-free mass (F = 39.123, p \u2264 0.01, \u03b72 = 0.48). Over time, the soccer group decreased their fat mass and increased their fat-free mass, while the opposite results were observed for the controls. Among physical fitness tests, a substantial effect of soccer training was evidenced for the sit-up performance (F = 16.224, p \u2264 0.01, \u03b72 = 0.32). Regarding the time factor, significant effects were noted for height and handgrip strength. No significant differences were detected for flexibility. Overall, the benefits of soccer training were exhibited by the larger improvements in fat mass, fat-free mass, sit-ups, and handgrip strength performance, underlining the important role of soccer participation during adolescence.<\/jats:p>","DOI":"10.3390\/children10020391","type":"journal-article","created":{"date-parts":[[2023,2,16]],"date-time":"2023-02-16T05:27:38Z","timestamp":1676525258000},"page":"391","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Changes in Estimated Body Composition and Physical Fitness of Adolescent Boys after One Year of Soccer Training"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8364-6832","authenticated-orcid":false,"given":"C\u00edntia","family":"Fran\u00e7a","sequence":"first","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0825-4032","authenticated-orcid":false,"given":"Diogo V.","family":"Martinho","sequence":"additional","affiliation":[{"name":"University of Coimbra, Research Unit for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, 3004-504 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0927-692X","authenticated-orcid":false,"given":"\u00c9lvio R\u00fabio","family":"Gouveia","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 5000-801 Vila Real, Portugal"},{"name":"Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland"}]},{"given":"Francisco","family":"Martins","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"LARSYS, Interactive Technologies Institute, 9020-105 Funchal, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9850-7771","authenticated-orcid":false,"given":"Adilson","family":"Marques","sequence":"additional","affiliation":[{"name":"Faculty of Human Kinetics, University of Lisbon, 1499-002 Lisbon, Portugal"},{"name":"CIPER, Faculty of Human Kinetics, University of Lisbon, 1495-751 Lisbon, Portugal"},{"name":"ISAMB, Faculty of Medicine, University of Lisbon, 1649-020 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5602-048X","authenticated-orcid":false,"given":"Tiago","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Faculty of Human Kinetics, University of Lisbon, 1499-002 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3577-3439","authenticated-orcid":false,"given":"Marcelo de Maio","family":"Nascimento","sequence":"additional","affiliation":[{"name":"Department of Physical Education, Federal University of Vale do S\u00e3o Francisco, Petrolina 56304-917, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1388-9473","authenticated-orcid":false,"given":"Helder","family":"Lopes","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1675-984X","authenticated-orcid":false,"given":"Ana","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Department of Physical Education and Sport, University of Madeira, 9020-105 Funchal, Portugal"},{"name":"Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9845-5190","authenticated-orcid":false,"given":"Andreas","family":"Ihle","sequence":"additional","affiliation":[{"name":"Center for the Interdisciplinary Study of Gerontology and Vulnerability, University of Geneva, 1205 Geneva, Switzerland"},{"name":"Department of Psychology, University of Geneva, 1205 Geneva, Switzerland"},{"name":"Swiss National Centre of Competence in Research LIVES\u2014Overcoming Vulnerability: Life Course Perspectives, 1015 Lausanne, Switzerland"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.ypmed.2016.11.027","article-title":"Global participation in sport and leisure-time physical activities: A systematic review and meta-analysis","volume":"95","author":"Hulteen","year":"2017","journal-title":"Prev. 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