{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T13:06:07Z","timestamp":1769000767173,"version":"3.49.0"},"reference-count":39,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2022,12,5]],"date-time":"2022-12-05T00:00:00Z","timestamp":1670198400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"AFINA-te Project Study (Physical Activity and Nutritional Information for Adolescents)","award":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"],"award-info":[{"award-number":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"]}]},{"name":"AFINA-te Project Study (Physical Activity and Nutritional Information for Adolescents)","award":["FCT UID\/DTP\/00617\/2020"],"award-info":[{"award-number":["FCT UID\/DTP\/00617\/2020"]}]},{"name":"AFINA-te Project Study (Physical Activity and Nutritional Information for Adolescents)","award":["LA\/P\/0064\/2020"],"award-info":[{"award-number":["LA\/P\/0064\/2020"]}]},{"name":"Foundation for Science and Technology","award":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"],"award-info":[{"award-number":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"]}]},{"name":"Foundation for Science and Technology","award":["FCT UID\/DTP\/00617\/2020"],"award-info":[{"award-number":["FCT UID\/DTP\/00617\/2020"]}]},{"name":"Foundation for Science and Technology","award":["LA\/P\/0064\/2020"],"award-info":[{"award-number":["LA\/P\/0064\/2020"]}]},{"name":"CIAFEL","award":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"],"award-info":[{"award-number":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"]}]},{"name":"CIAFEL","award":["FCT UID\/DTP\/00617\/2020"],"award-info":[{"award-number":["FCT UID\/DTP\/00617\/2020"]}]},{"name":"CIAFEL","award":["LA\/P\/0064\/2020"],"award-info":[{"award-number":["LA\/P\/0064\/2020"]}]},{"name":"ITR","award":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"],"award-info":[{"award-number":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"]}]},{"name":"ITR","award":["FCT UID\/DTP\/00617\/2020"],"award-info":[{"award-number":["FCT UID\/DTP\/00617\/2020"]}]},{"name":"ITR","award":["LA\/P\/0064\/2020"],"award-info":[{"award-number":["LA\/P\/0064\/2020"]}]},{"name":"Fundaci\u00f3n S\u00e9neca. Agencia de Ciencia y Tecnolog\u00eda","award":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"],"award-info":[{"award-number":["FCOMP-01-0124-FEDER-028619 (PTDC\/DTP-DES\/1328\/2012)"]}]},{"name":"Fundaci\u00f3n S\u00e9neca. Agencia de Ciencia y Tecnolog\u00eda","award":["FCT UID\/DTP\/00617\/2020"],"award-info":[{"award-number":["FCT UID\/DTP\/00617\/2020"]}]},{"name":"Fundaci\u00f3n S\u00e9neca. Agencia de Ciencia y Tecnolog\u00eda","award":["LA\/P\/0064\/2020"],"award-info":[{"award-number":["LA\/P\/0064\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>There are only a few studies that have examined the interaction between physical activity (PA), cardiorespiratory fitness (CRF), and overweightness\/obesity in adolescents, and these studies have shown some limitations. The objective of this study was to examine whether the association between PA (moderate\u2013vigorous PA [MVPA], moderate PA [MPA], and vigorous PA [VPA]) and obesity is mediated by CRF. This cross-sectional study was conducted in six middle and high-schools in the Porto district (Portugal), comprising 632 children and adolescents. Fat mass (FM), CRF, MVPA, MPA, and VPA were assessed. The Process macro for SPSS was used. CRF was significantly associated with PA for both children and adolescents. Likewise, FM was negatively and significantly associated with CRF for both children (\u03b2 = \u22120.337) and adolescents (\u03b2 = \u22120.255). FM was associated with PA in children (MVPA: \u03b2 = \u22120.102; MPA: \u03b2 = \u22120.118; VPA: \u03b2 = \u22120.305) and adolescents (MVPA: \u03b2: \u22120.103; MPA: \u03b2 = \u22120.082; VPA: \u03b2 = \u22120.204). The mediation analysis showed that the association between PA (MVPA\/\/MPA\/VPA) and obesity was mediated by CRF, in both children and adolescents, with a significant value in the Sobel test. Obesity is associated with CRF and MVPA, MPA, and VPA. However, CRF acted as a complete mediator between the association of obesity and PA.<\/jats:p>","DOI":"10.3390\/ijerph192316262","type":"journal-article","created":{"date-parts":[[2022,12,5]],"date-time":"2022-12-05T03:38:38Z","timestamp":1670211518000},"page":"16262","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Cardiorespiratory Fitness, Obesity and Physical Activity in Schoolchildren: The Effect of Mediation"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7291-3306","authenticated-orcid":false,"given":"Noelia","family":"Gonz\u00e1lez-G\u00e1lvez","sequence":"first","affiliation":[{"name":"Sports Injury Prevention Research Group, Facultad de Deporte, UCAM Universidad Cat\u00f3lica de Murcia, 30107 Murcia, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6628-4606","authenticated-orcid":false,"given":"Jose Carlos","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Research Center in Physical Activity, Health and Leisure (CIAFEL)\u2014Faculty of Sport\u2014University of Porto (FADEUP) and Laboratory for Integrative and Translational Research in Population Health (ITR), 4200-450 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7571-9181","authenticated-orcid":false,"given":"Jorge","family":"Mota","sequence":"additional","affiliation":[{"name":"Research Center in Physical Activity, Health and Leisure (CIAFEL)\u2014Faculty of Sport\u2014University of Porto (FADEUP) and Laboratory for Integrative and Translational Research in Population Health (ITR), 4200-450 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,5]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (WHO) (2017). 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