RT journal article T1 Bidirectional longitudinal associations of fatness with physical fitness in adolescents with Down syndrome. The UP&DOWN Longitudinal study A1 Izquierdo Gomez, Rocio A1 Esteban-Cornejo, Irene A1 Cabanas-Sánchez, Verónica A1 Villagra, Ariel A1 Veiga L, Óscar A1 Martínez-Gómez, David A2 Didáctica de la Educación FísicaPlástica y Musical K1 adolescents K1 intellectual disability K1 obesity K1 physical fitness AB Background: The aim of this study was to examine the bidirectional longitudinal associations of several markers of fatness and physical fitness in adolescents with Down syndrome.Methods: This study comprised a total of 111 adolescents (41 females), aged from 11 to 20 years with complete data at the baseline. We had a drop-out of <10% from the baseline to the 2-year follow-up. The ALPHA health-related fitness test battery for youth was used.Results: Our results show that all fatness variables at the baseline were associated with a 2-year change in cardiorespiratory fitness (β ranging from -0.32 to -0.38; all p < .05), but not with muscular and motor fitness (p > .05). However, no associations were found between physical fitness components as predictors and fatness indicators (p > .05).Conclusions: Results suggest that reducing fatness during adolescence might represent a modifiable factor to improve cardiorespiratory fitness at the 2-year follow-up, but not vice versa since associations were not bidirectional. PB Wiley SN 1468-3148 YR 2021 FD 2021 LK http://hdl.handle.net/10498/34536 UL http://hdl.handle.net/10498/34536 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026