Background To explore differences in physical fitness levels among different grade groups and identify the association between body mass index (BMI) and physical fitness index (PFI). Methods This stud
Overweight is defined as BMI>90th percentile, obesity as BMI>97th percentile. The reference system is based on pooled data from 17 surveys conducted in Germany between 1985 and 1999 (K. Kromeyer-Hausc
* p†p‡pBody mass index was different between athletes and non-athletes and between men and women (ppCharacteristics of athletes and non-athlete individuals.
