Table 3

Number and severity of knee, back and hip overuse injuries

Overall
(n=26)
Technique
Specialists
(n=15)
Speed
Specialists
(n=11)
Knee
 No of Incidents (n)523220
 Duration (weeks)10 (3–12)10 (3–12)10 (3–12)
 Average Two-Weekly Severity Score (-)23 (16–29)20 (16–27)28 (23–32)
 Cumulative Severity Score (-)98 (31–168)106 (20–155)92 (43–189)
Back
 No of Incidents (n)37316
 Duration (weeks)6 (2–10)8 (3–13)4 (2–6)
 Average Two-Weekly Severity Score (-)21 (16–22)19 (16–23)22 (15–22)
 Cumulative Severity Score (-)66 (22–114)81 (23–122)30 (22–66)
Hip
 No of Incidents (n)19136
 Duration (weeks)4 (2–10)4 (2–9)6 (4–8)
 Average Two-Weekly Severity Score (-)27 (22–37)25 (15–27)44 (40–47)
 Cumulative Severity Score (-)40 (28–107)40 (25–79)144 (91–198)
  • Data are expressed as median with the 25%–75% IQR in parenthesis. There were no significant differences between (1) the technique and speed specialists based on Mann Whitney U tests (p<0.05), and (2) knee, back and hip overuse injuries based on Kruskal-Wallis H tests (p<0.05).