Table 3.
Associations Between Risk Factors and Injury Type
| Risk Factor |
Category |
Injury, No. (%) |
P Value |
|||
| Knee |
Ankle or Foot Tendinopathy |
Back |
Other |
|||
| Practice, y | ≤3 | 20 (34.5) | 9 (15.5) | 15 (25.9) | 14 (24.1) | .322 |
| 4–6 | 42 (33.9) | 26 (21.0) | 29 (23.4) | 27 (21.8) | ||
| 7–9 | 92 (44.7) | 30 (14.6) | 40 (19.4) | 44 (21.4) | ||
| ≥10 | 41 (40.6) | 21 (20.8) | 13 (12.9) | 26 (25.7) | ||
| Practice per week, h | <8 | 20 (37.7) | 6 (11.3) | 18 (34.0) | 9 (17.0) | .060 |
| 8–11 | 27 (45.0) | 4 (6.7) | 10 (16.7) | 19 (31.7) | ||
| >11 | 46 (46.0) | 16 (16.0) | 16 (16.0) | 22 (22.0) | ||
| Age group, y | 8–10 | 9 (15.3) | 18 (30.5) | 19 (32.2) | 13 (22.0) | <.001a |
| 11–13 | 69 (45.1) | 24 (15.7) | 23 (15.0) | 37 (24.2) | ||
| 14–16 | 152 (42.6) | 55 (15.4) | 67 (18.8) | 83 (23.2) | ||
| Body mass index | <18 | 36 (36.4) | 12 (12.1) | 18 (18.2) | 33 (33.3) | .062 |
| 18–20 | 63 (50.4) | 20 (16.0) | 19 (15.2) | 23 (18.4) | ||
| >20 | 53 (41.7) | 22 (17.3) | 28 (22.0) | 24 (18.9) | ||
| Scoliosis? | Yes | 50 (27.3) | 14 (7.7) | 86 (47.0) | 33 (18.0) | <.001 |
| No | 175 (47.4) | 78 (21.1) | 21 (5.7) | 95 (25.7) | ||
| Ankle plantar flexion | Hypomobile | 24 (10.4) | 8 (8.3) | 13 (12.1) | 10 (7.8) | .044b |
| Average | 153 (66.5) | 54 (56.3) | 78 (72.9) | 89 (69.5) | ||
| Hypermobile | 53 (23.0) | 34 (35.4) | 16 (15.0) | 29 (22.7) | ||
| Hip abduction | Hypomobile | 22 (9.7) | 5 (5.3) | 13 (12.6) | 10 (7.9) | .030b |
| Average | 143 (63.0) | 48 (50.5) | 65 (63.1) | 71 (56.3) | ||
| Hypermobile | 62 (27.3) | 42 (44.2) | 25 (24.3) | 45 (35.7) | ||
| Hip external rotation | Hypomobile | 45 (19.6) | 17 (17.5) | 30 (27.8) | 22 (16.8) | .016b |
| Average | 136 (59.1) | 45 (46.4) | 60 (55.6) | 74 (56.5) | ||
| Hypermobile | 49 (21.3) | 35 (36.1) | 18 (16.7) | 35 (26.7) | ||
a
P < .05: Age 8–10 y compared with age 11–13 y and age 8–10 y compared with age 14–16 y.
b
P < .05: Dancers with hypermobile range of motion compared with those with average range of motion.