Table 4

Incidence of RRIs in the preconditioning and control group

RRIsPRECON (n=171)Control (n=191)Total (n=362)
Absolute number263258
Per 100 runners at risk15.7 (10.3 to 21.2)16.8 (11.5 to 22.1)16.3 (12.5 to 20.1)
Per 1000 h of exposure31 (24.0 to 38.0)30 (24.0 to 37.0)32 (26.0 to 36.0)
  • Numbers in parentheses represent 95% CI.

  • RRIs, running-related injuries.