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Open AccessArticle

Cardiorespiratory Fitness as a Mediator of the Influence of Diet on Obesity in Children

Centro de Estudios Socio-Sanitarios, Universidad de Castilla-La Mancha, 16071 Cuenca, Spain
Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, USACH, Santiago 7500618, Chile
SESCAM, Department of Nutrition and Dietetics, Talavera de la Reina, 45600 Toledo, Spain
Facultad de Enfermería, Universidad de Castilla-La Mancha, 16071 Cuenca, Spain
Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca 1670, Chile
Author to whom correspondence should be addressed.
Nutrients 2018, 10(3), 358;
Received: 3 February 2018 / Revised: 9 March 2018 / Accepted: 13 March 2018 / Published: 16 March 2018
(This article belongs to the Special Issue Balancing Physical Activity and Nutrition for Human Health)
The association between diet and obesity has been widely studied and it continues to be controversial; however, the extent to which cardiorespiratory fitness (CRF) acts as a confounder or mediator in this relation has not been analyzed. The aim of this study is to examine if the relation between diet and obesity is mediated by CRF. In this cross-sectional study, fat mass (by electronic bioimpedance) was measured in 320 schoolchildren, aged 9–11 years. Diet was measured through two computerised 24-h dietary recalls and CRF was assessed by the 20-m shuttle run test. Simple mediation analyses were fitted. CRF acts as a partial mediator in the negative relationship between dietary factors (energy intake/weight, carbohydrate intake/weight, protein intake/weight, and fat intake/weight) and fat mass. The percentage of mediation ranged from 24.3 to 33.2%. Thus, Spanish schoolchildren with higher levels of energy and macronutrients intake had lower adiposity levels, especially when they had good levels of CRF. View Full-Text
Keywords: children; obesity; energy intake; fat intake; CRF; mediation children; obesity; energy intake; fat intake; CRF; mediation
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Lahoz-García, N.; García-Hermoso, A.; Milla-Tobarra, M.; Díez-Fernández, A.; Soriano-Cano, A.; Martínez-Vizcaíno, V. Cardiorespiratory Fitness as a Mediator of the Influence of Diet on Obesity in Children. Nutrients 2018, 10, 358.

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