TABLE 3.
Prospective Age-Adjusted Association Between Hours per Week Engaged in Specific Sports and Risk of Injury Among Adolescents and Young Adults in the Growing Up Today Studya
| Hours per Week | Males | Females |
|---|---|---|
| Running | 1.07 (1.01-1.12) | 1.08 (1.04-1.13) |
| Basketball | 1.05 (1.00-1.11) | 1.06 (1.02-1.11) |
| Baseball | 1.11 (1.05-1.18) | 1.02 (0.96-1.08) |
| Dance | 0.93 (0.73-1.19) | 1.02 (0.98-1.06) |
| Swimming | 0.98 (0.91-1.05) | 1.04 (1.00-1.09) |
| Skating | 0.96 (0.86-1.07) | 1.01 (0.94-1.09) |
| Soccer | 1.07 (1.02-1.12) | 1.07 (1.02-1.11) |
| Football | 1.00 (0.95-1.07) | — |
| Tennis | 1.03 (0.91-1.15) | 1.00 (0.93-1.09) |
| Volleyball | 1.11 (0.92-1.35) | 1.07 (1.02-1.13) |
| Martial arts | 1.08 (0.99-1.16) | 0.93 (0.77-1.12) |
| Hockey | 1.02 (0.93-1.12) | 1.04 (0.95-1.13) |
| Cheerleading/gymnastics | 1.21 (1.09-1.34) | 1.09 (1.04-1.14) |
aValues are presented as hazard ratio (95% CI). Data are from Cox proportional hazards models that included all the activities listed in the table, which were measured in the cycle before case designation: 1178 females and 793 males developed a stress fracture, chondromalacia patella or patella femoral syndrome, tendinitis, anterior cruciate ligament tear, or osteochondritis dissecans or osteochondral defect for the first time.