Author(s): CASTAGNA, C.1,3, PÓVOAS, S.2,3, KRUSTRUP, P.3,4,5, LARSEN, M.3, Institution: CARLO BO URBINO UNIVERSITY, URBINO, ITALY, Country: ITALY, Abstract-ID: 2053

INTRODUCTION:


Castagna, C.1,2,3, Póvoas, S.3,4, Krustrup, P.3,5,6, Larsen, M.3
1) Carlo Bo Urbino University, Urbino, IT, 2) Settore Tecnico FIGC, Florence, IT 3) SHSC-SDU, Odense, DK, 4) CIDESD/UMAIA, Maia, PT, 5) DIAS/SHSC-SDU, Odense, DK, 6) University of Exeter, UK

The aim of this study was to analyse the association between body composition and intermittent aerobic performance, in children of both sexes, engaged in a football training programme.

METHODS:
One-hundred twenty-seven (age 10.7±0.5 years, body mass 41.2±9.0 kg, stature 149±7 cm) children (70 boys) were tested in the untrained state. Whole-body Dual-energy X-ray Absorptiometry was used to evaluate body composition and intermittent aerobic performance was accessed by an age-adapted aerobic performance field test, the Yo-Yo Intermittent Recovery level 1 Children’s test (YYIR1C).
RESULTS:
The children covered 618±441m in the YYIR1C showing moderate differences between the sexes (p<0.05). YYIR1C performance was moderately-to-trivially negatively associated with Fat Mass and Body Mass, respectively (p<0.05). In boys, the associations between Fat Mass, Body Mass and Body Mass Index (BMI) and YYIRC1 were small and negative (p<0.05). In girls, YYIR1C performance was small-to-trivially negatively associated with Fat Mass, Body Mass and BMI (p<0.05). When accounting for Fat Mass, Body Mass and YYIR1C performance resulted trivially associated in all children. Trivial-to-small associations were found between YYIR1C performance and Body Mass when accounting for Fat Mass and BMI in boys and girls.
CONCLUSION:
The results from this study promote the acceptability of the YYIR1C test as tool to evaluate aerobic performance in 10-12-year-old children of both sexes, possessing different body composition in the untrained state.

This work was funded by Nordea Foundation and by Portuguese Funds by FCT – Foundation for Science and Technology under the following project UIDB04045/2020 (https://doi.org/10.54499/UIDB/04045/2020).