Figure 3. The frequency distribution of (A) age, (B) breast size^a, (C) BMI, (D) frequency of sports bra use^b, and (E) weekly training for participants who did not report (no injury) and did report (injury) frictional breast injuries. * indicates significant difference (p < 0.05) between participants who did not report and did report frictional breast injuries. ^a Breast size ranked from 1 (small breasts, < 350 ml per breast) to 4 (hypertrophic breasts, > 1200 ml per breast). ^b Frequency of sports bra use ranked from 1 (always) to 5 (never)