Table 2

 Total boxing exposure (in hours) during the 12 month follow up period

Combined (n = 47)Amateur (n = 33)Professionals (n = 14)
*Estimate based on extrapolation of six month intensive follow up.
Training with sparring*6378.14701.31676.9
Training without sparring*4332.33067.11265.1
Bouts10.73.37.4
Total10721.17771.72949.4