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Injury recurrence is lower at the highest professional football level than at national and amateur levels: does sports medicine and sports physiotherapy deliver?
  1. Martin Hägglund1,2,
  2. Markus Waldén2,3,
  3. Jan Ekstrand2,3
  1. 1Division of Physiotherapy, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
  2. 2Football Research Group, Linköping, Sweden
  3. 3Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
  1. Correspondence to Dr Martin Hägglund, Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy, Linköping S-581 83, Sweden; martin.hagglund{at}liu.se

Abstract

Background Previous injury is a well-documented risk factor for football injury. The time trends and patterns of recurrent injuries at different playing levels are not clear.

Aim To compare recurrent injury proportions, incidences and patterns between different football playing levels, and to study time trends in recurrent injury incidence.

Methods Time-loss injuries were collected from injury surveillance of 43 top-level European professional teams (240 team-seasons), 19 Swedish premier division teams (82 team-seasons) and 10 Swedish amateur teams (10 team-seasons). Recurrent injury was defined as an injury of the same type and at the same site as an index injury within the preceding year, with injury <2 months defined as an early recurrence, and >2 months as a delayed recurrence. Seasonal trend for recurrent injury incidence, expressed as the average annual percentage of change, was analysed using linear regression.

Results 13 050 injuries were included, 2449 (18.8%) being recurrent injuries, with 1944 early (14.9%) and 505 delayed recurrences (3.9%). Recurrence proportions were highest in the second half of the competitive season for all cohorts. Recurrence proportions differed between playing levels, with 35.1% in the amateur cohort, 25.0% in the Swedish elite cohort and 16.6% in the European cohort (χ2 overall effect, p<0.001). A decreasing trend was observed in recurrent injury incidence in the European cohort, a −2.9% average annual change over the 14-year study period (95% CI −5.4% to −0.4%, p=0.026). Similarly, a decreasing tendency was also seen in the Swedish premier division.

Conclusions Recurrence proportions showed an inverse relationship with playing level, and recurrent injury incidence has decreased over the past decade.

  • Cohort study
  • Football
  • Injury
  • Recurrent
  • Soccer

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