Sport & Exercise Discipline Group, Faculty of Health, University of Technology Sydney (UTS), Australia; Medical Department, Football Federation Australia, Australia.
Sport & Exercise Discipline Group, Faculty of Health, University of Technology Sydney (UTS), Australia; Medical Department, Football Federation Australia, Australia.
J Sci Med Sport. 2021 May;24(5):463-467. doi: 10.1016/j.jsams.2020.11.004. Epub 2020 Nov 26.
To determine the relationship between injury incidence, player-salary cost and team performance in the professional Australian soccer league.
Prospective observational cohort study.
Injury incidence, player-salary cost and team performance data were collected from the 10-club A-League competition (n=27 matches/season) over 6 seasons from 2012/13. Player-salary cost of injury was calculated from the salary cap, injury-induced missed matches and player exposure, and trends were reported from Poisson regressions. Team performance was determined from ranking, points, goals (scored, conceded and difference) and match outcome (win, loss or draw) per season and analysed via a mixed-effects Poisson models to estimate association with injury.
Nine-hundred-and-sixteen injuries resulted in 3148 missed matches. Injury incidence remained stable apart from a decrease in 2015/16 (p=0.01). Missed matches were significantly higher in season 2013/14 (55.1 [50.7-59.9]; p<0.01) and 2014/15 (71.4 [66.4-76.8]; p<0.001) compared to 2012/13, without differences between other seasons. Player-salary cost ranged between AUD$187,990-AUD$332,680/team, peaking in 2014/15 (p<0.01). Multi-collinearity was detected for team performance variables except for matches lost. Teams who finished the season with greater positive goal differences were associated with 1% less injuries (p=0.003). Similarly, more missed matches were associated with 1% less league points and losses (p<0.001).
Player-salary costs remained stable, concomitant with stable injury rates and missed matches. Despite injury being associated with goals difference, points and match losses; the magnitude of these relationships are small and team performance is more complex than injury occurrence alone. Injury prevention remains necessary for reducing injury-induced player-salary costs; however, additional services are required to improve team performance.
确定澳大利亚职业足球联赛中伤病发生率、球员薪资成本与球队表现之间的关系。
前瞻性观察性队列研究。
从 2012/13 赛季开始的 6 个赛季中，从 10 支俱乐部 A 联赛（每场比赛 27 场比赛/赛季）中收集伤病发生率、球员薪资成本和球队表现数据。根据工资帽、伤病导致的缺阵次数和球员上场时间，计算出伤病导致的球员薪资成本，采用泊松回归报告趋势。每个赛季根据排名、积分、进球（进球、失球和差值）和比赛结果（胜、负或平）确定球队表现，并通过混合效应泊松模型进行分析，以估计与伤病的关联。
916 次受伤导致 3148 次缺阵。除 2015/16 赛季下降外（p=0.01），伤病发生率保持稳定。与 2012/13 赛季相比，2013/14 赛季（55.1[50.7-59.9]；p<0.01）和 2014/15 赛季（71.4[66.4-76.8]；p<0.001）的缺阵次数明显更高，而其他赛季则没有差异。球员薪资成本在 AUD$187,990-AUD$332,680/队之间波动，2014/15 赛季达到峰值（p<0.01）。团队表现变量除了失分队外均存在多重共线性。赛季结束时正进球差较大的球队受伤的可能性降低 1%（p=0.003）。同样，更多的缺阵次数与联赛积分和输球减少 1%相关（p<0.001）。
球员薪资成本保持稳定，同时伤病发生率和缺阵次数也保持稳定。尽管伤病与进球差、积分和比赛失利有关，但这些关系的幅度很小，球队表现比伤病的发生更为复杂。为了降低伤病导致的球员薪资成本，仍需进行伤病预防；但需要额外的服务来提高球队表现。
