A multi-year injury epidemiology analysis of an elite national junior tennis program

To profile multi-year injury incidence and severity trends in elite junior tennis players from a national program.

Prospective cohort.

Injury data was collated by sex, age and region for all nationally-supported Australian junior players (58m, 43f 13-18y) between 2012-2016. Injury was defined as a physical complaint from training/matchplay interrupting training/matchplay determined by presiding physiotherapists and doctors. Severity represented the days of interrupted training/matchplay per injury. Injury incidence was reported per 1000 exposure hours. Incidence rate change and rate ratios (RR) ±95% confidence intervals were used to assess changes over time.

No difference in male and female injury incidence existed (2.7±0.0 v 2.8±0.0) yet male injuries were more severe (3.6±0.6 v 1.1±0.9 days). The lumbar spine was the most commonly and severely injured region in both sexes (4.3±0.2, 9.9±1.4d). Shoulder injuries were the second most common in both sexes (3.1±0.2) and with the second highest severity in males (7.3±1.4d). Knee injuries were also common in males (2.3±0.2) yet potentially reduced over time (0.4±0.6 RR) as pelvis/buttock injuries increased (3.4±14.0 RR). Females had high trunk and abdominal injury incidences (2.5±0.3). Independent of sex, the injury incidence increased with age from 2.0±0.1 (13y) to 2.9±0.1 (18y).

Despite no sex-based difference in injury incidence, male injuries resulted in more interrupted days of training/matchplay. The lumbar spine and shoulder were the most commonly injured body regions in both sexes. The number of injuries sustained by players also increased as they aged.