Publicación

The International Fitness Scale (IFIS): usefulness of self-reported fitness in youth

  • INTERNATIONAL JOURNAL OF EPIDEMIOLOGY
  • Autores
    Ortega, FB; Ruiz, JR; Espana-Romero, V; Vicente-Rodriguez, G; Martinez-Gomez, D; Manios, Y; Beghin, L; Molnar, D; Widhalm, K; Moreno, LA; Sjostrom, M; Castillo, MJ
  • Año Publicación
    2011
  • Volumen
    40
  • Número
    3
  • Pág. Inicio
    701
  • Pág. Fin
    711
  • Pág. Fin
    701
Referencia Citadas
48
Citas Web of Science
46
Total de veces citado (Z9)
47
Recuento Uso 180 días
1
Recuento Uso 5 años
21

Background We examined: (i) the usefulness of the International Fitness Scale (IFIS) to correctly rank adolescents into physical fitness levels; (ii) the capacity of the IFIS for predicting cardiovascular disease (CVD) risk; and (iii) the reliability of the IFIS in adolescents. Methods The study comprised 3059 adolescents (aged 12.5-17.5 years) from nine European countries (HELENA study). Blood samples were collected in one-third of the participants (randomly selected, n = 981). Test-retest reliability of the IFIS was studied in a separate sample of 277 adolescents. Physical fitness-cardiorespiratory fitness (CRF), muscular fitness (MF), speed-agility (SP-AG), flexibility and overall fitness-was self-reported using 5-point Likert-scale questions (1 = very poor, 5 = very good) and measured using standard field-based tests. The CVD risk factors measured included total/central adiposity indices and mean arterial pressure, total and high density lipoprotein cholesterol, triglycerides, insulin resistance (HOMA) and C-reactive protein. Results Analysis of covariance showed that adolescents reporting better fitness had higher measured fitness levels for all the variables studied (all P < 0.001), regardless of gender, age and weight status. Adolescents reporting very good overall fitness, CRF and SP-AG had a healthier cardiovascular profile in eight out of nine CVD risk factors studied. Perfect agreement (same test-retest answer) was observed in 65% of the adolescents and perfect-acceptable agreement (same answer or +/- 1) in 97% of the adolescents. Conclusions (i) The IFIS is able to correctly rank adolescents according to their measured physical fitness levels; (ii) adolescents reporting a good/very good overall fitness, CRF or SP-AG have a more favorable cardiovascular profile; and (iii) The IFIS is reliable in adolescents.


Web financiada por la Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades, Fondo Europeo de Desarrollo Regional (FEDER), proyecto SOMM17/6107/UG

Web financiada por la Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades, Fondo Europeo de Desarrollo Regional (FEDER), proyecto SOMM17/6107/UGR