TABLE 3.
Injury Rate Analysis
| Sustained an Injury While Practicing CrossFit | |||||
|---|---|---|---|---|---|
| Variable | No | Yes | Total Responses | Odds Ratio (95% CI) | P |
| Sex, n (%) | .105 | ||||
| Female | 176 (72.4) | 67 (27.6) | 243 | 1 | |
| Male | 214 (66) | 109 (34) | 323 | 1.35 (0.939-1.942) | |
| Age, y | .361 | ||||
| Mean ± SD | 31.1 (7.3) | 31.7 (6.3) | 31.3 (7) | 1.012 (0.987-1.037) | |
| Median (range) | 31 (13-56) | 31 (19-58) | 31 (13-58) | ||
| Height, cm | .287 | ||||
| Mean ± SD | 171.2 (9.2) | 172.1 (8.9) | 171.5 (9.1) | 1.011 (0.991-1.031) | |
| Median (range) | 171 (146-193) | 172 (150-197) | 171 (146-197) | ||
| Weight, kg | .212 | ||||
| Mean ± SD | 73.7 (14.9) | 75.4 (16.4) | 74.2 (15.4) | 1.007 (1.996-1.019) | |
| Median (range) | 73 (47-163) | 74 (46-165) | 74 (46-165) | ||
| Body mass index, kg/m2 | .355 | ||||
| Mean ± SD | 25 (3.7) | 25.3 (3.9) | 25.1 (3.8) | 1.022 (1.976-1.069) | |
| Median (range) | 24.6 (17.6-63.7) | 24.6 (17.2-53.3) | 24.6 (17.2-63.7) | ||
| CrossFit frequency, n (%) | .581 | ||||
| <3 times/wk | 22 (73.3) | 8 (26.7) | 30 | 1 | |
| ≥3 times/wk | 368 (68.5) | 168 (31.5) | 536 | 1.263 (0.551-2.895) | |
| Length of training sessions, n (%) | .126 | ||||
| <1 h | 23 (82.1) | 5 (17.9) | 28 | 1 | |
| ≥1 h | 367 (68.1) | 171 (31.9) | 538 | 2.156 (0.806-5.767) | |
| CrossFit competitions, n (%) | .006a | ||||
| No | 277 (72.5) | 105 (27.5) | 382 | 1 | |
| Yes | 113 (61.1) | 72 (38.9) | 185 | 1.681 (1.16-2.436) | |
| Rest frequency, n (%) | .809 | ||||
| <3 times/wk | 288 (69.1) | 129 (30.9) | 417 | 1 | |
| ≥3 times/wk | 102 (68) | 47 (32) | 149 | 1.051 (0.704-1.569) | |
| Practice another sport, n (%) | .673 | ||||
| No | 166 (69.7) | 72 (30.3) | 238 | 1 | |
| Yes | 224 (68.1) | 104 (31.9) | 328 | 1.081 (0.753-1.55) | |
| Frequency of other sports, n (%) | .637 | ||||
| <3 times/wk | 330 (39.2) | 146 (30.8) | 476 | 1 | |
| ≥3 times/wk | 60 (66.7) | 30 (33.3) | 90 | 1.122 (0.695-1.813) | |
| Sports participation before CrossFit, n (%) | .978 | ||||
| No | 24 (68.6) | 11 (31.4) | 35 | 1 | |
| Yes | 366 (68.8) | 165 (31.2) | 531 | 0.99 (0.474-2.068) | |
| Level of sport practiced, n (%) | .837 | ||||
| Noncompetitive | 271 (68.1) | 127 (31.9) | 398 | 1 | |
| Competitive, amateur | 89 (69.5) | 38 (30.5) | 127 | 0.935 (0.607-1.439) | |
| Competitive, collegiate | 13 (68.4) | 6 (31.6) | 19 | 0.985 (0.366-2.651) | |
| Competitive, professional | 17 (77.3) | 5 (22.7) | 22 | 0.628 (0.227-1.739) | |
| Monitored by a health care professional to improve performance, n (%) | .086 | ||||
| No | 180 (72.6) | 67 (27.4) | 247 | 1 | |
| Yes | 210 (65.8) | 109 (34.2) | 319 | 1.374 (0.956-1.974) | |
| Practice time, n (%) | .004a | ||||
| >6 mo | 138 (77.1) | 41 (22.9) | 179 | 1 | |
| <6 mo | 252 (64.9) | 135 (35.1) | 387 | 1.816 (1.21-2.727) | |
aWhen analyzed alone, participation in competitions and length of CrossFit practice significantly increased injury frequency rates (P < .05).