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. 2019 Jun 18;55(6):286. doi: 10.3390/medicina55060286

Table 4.

Criterion of validity of the physical fitness questionnaire (*) in the pediatric population.

Components Children (n = 190) Adolescents (n = 110)
Agreement % K Agreement % k
Overall fitness 82.63 0.60 82.73 0.49
Cardiorespiratory fitness 86.26 0.65 81.82 0.40
Muscular strength 76.26 0.50 83.84 0.43
Speed and agility 79.47 0.50 86.36 0.54
Flexibility 70.00 0.40 84.55 0.53

* IFIS-LP: International Fitness Scale, Portuguese version, applied at two different times with an interval of 15 days; κ: Moderate (or above) kappa concordance coefficient (κ ≥ 0.40) values are in bold; criterion validity: Estimated by the agreement between the questionnaire and the physical test.