Table 1

Comparison of demographics between athletes and controls*

ParametersAthletes (n=3781)Controls (n=806)P value
Age (years)19.9±5.920.3±6.20.109
Body surface area (m2)1.8±0.31.8±0.20.062
Height (cm)174.8±11.5172.6±9.8<0.001
Systolic blood pressure (mm Hg)112±12.9124±13.4<0.001
Sex n (%) 0.228
 Males63.361.0
 Females36.739.0
Ethnicity (%)<0.001
 Caucasian88.875.7
 African/Afro-Caribbean6.219.9
Asian1.73.5
Mixed race2.70.7
 Other ethnicity0.70.2
Hours of training/week16.7±8.12.7±3.1<0.001
  • *Data expressed as mean±SD.