Skip to main content

Table 1 Descriptive characteristics of current and retired professional footballers

From: Knee osteoarthritis in professional football is related to severe knee injury and knee surgery

  Current professional footballers (N = 964) Retired professional footballers (N = 396)
Total No knee OA Knee OA Total No knee OA Knee OA
Age (in years; mean ± SD) 26 ± 4 26 ± 5 28 ± 4 36 ± 6 36 ± 6 38 ± 5
Height (in cm; mean ± SD) 180 ± 8 180 ± 8 180 ± 9 181 ± 7 181 ± 7 181 ± 6
Weight (in kg; mean ± SD) 75 ± 9 75 ± 9 75 ± 10 82 ± 9 82 ± 9 83 ± 9
Career duration (in years; mean ± SD) 7 ± 4 7 ± 4 8 ± 5 11 ± 5 11 ± 5 11 ± 5
Level of play (top league; %) 67 65 73 81 78 84
Educational level (%)
No schooling completed 2 2 5 1 0 2
Nursery/Elementary school 3 4 2 2 3 1
High school 45 45 40 28 30 28
Vocational/technical school 16 15 19 8 7 7
College, university or equivalent 34 34 34 61 60 62
 Retirement duration (in years; mean ± SD) 5 ± 4 5 ± 4 6 ± 4
 Forced retirement (%) 30 23 40
 Employed (%) 89 88 92
  1. N number of participants, No knee OA, group without knee osteoarthritis, Knee OA group with knee osteoarthritis, SD, standard deviation, cm, centimetres, kg kilograms, % percentage