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The Journal of Sports Medicine and Physical Fitness 2016 Novembre;56(11):1279-88

lingua: Inglese

A Fitness Index model for Italian adolescents living in Southern Italy: the ASSO project

Antonino BIANCO 1, Caterina MAMMINA 2, Monèm JEMNI 3, Anna R. FILIPPI 2, Antonino PATTI 1, Ewan THOMAS 1, Antonio PAOLI 4, Antonio PALMA 1, Garden TABACCHI 2

1 Sport and Exercise Sciences Research Unit, University of Palermo, Palermo, Italy; 2 Department of Health Promotion and Mother and Child Health, University of Palermo, Palermo, Italy; 3 Department of Sport Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar; 4 Department of Biomedical Sciences, University of Padua, Padua, Italy


BACKGROUND: Strong relations between physical fitness and health in adolescents have been established in the last decades. The main objectives of the present investigation were to assess major physical fitness components in a sample of Italian school adolescents, comparing them with international data, and providing a Fitness Index model derived from percentile cut-off values of five considered physical fitness components.
METHODS: A total of 644 school pupils (15.9±1.1 years; M: N.=399; F: N.=245) were tested using the ASSO-Fitness Test Battery (FTB), a tool developed within the Adolescents and Surveillance System for the Obesity prevention project, which included the handgrip, standing broad-jump, sit-up to exhaustion, 4×10-m shuttle run and 20-m shuttle run tests. Stratified percentile values and related smoothed curves were obtained. The method of principal components analysis (PCA) was applied to the considered five fitness components to derive a continuous fitness level score (the Fit-Score). A Likert-type scale on the Fit-Score values was applied to obtain an intuitive classification of the individual level of fitness: very poor (X < P20), poor (P20 ≤X< P40), medium (P40 ≤X< P60), good (P60 ≤X< P80) and very good (X ≥ P80).
RESULTS: Boys had higher fitness levels compared to girls. They also showed an incremental trend amongst fitness levels with age in all physical components. These results could be overlapped with those related to European adolescents. Data revealed high correlations (r>0.5) between the Fit-Score and all the fitness components. The median Fit-Score was equal to 33 for females and 53 for males (in a scale from 0 to 100).
CONCLUSIONS: The ASSO-FTB allowed the assessment of health-related fitness components in a convenient sample of Italian adolescents and provided a Fitness Index model incorporating all these components for an intuitive classification of fitness levels. If this model is confirmed, the monitoring of these variables will allow early detection of health-related issues in a mass population, thus giving the opportunity to plan appropriate interventions.

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