Injuries in female football players in top-level international tournaments

Effects of an anterior cruciate ligament injury prevention program on performance in adolescent female soccer players

Female soccer players are three times more likely to suffer a non-contact anterior cruciate ligament (ACL) tear compared with male soccer players. Several ACL injury prevention programs have been developed and are used to reduce injury risk. However, to date there is limited information on how such programs affect physical performance. The aim of this randomized controlled study was to investigate the effects of the Prevent Injury Enhance Performance (PEP) program in adolescent female soccer players. Four soccer teams were randomly assigned to an intervention (PEP) or control (CON) group and assessed at baseline, 6 weeks, and 12 weeks on linear sprinting, countermovement jump (CMJ), and two agility tests. A mixed model factorial ANOVA with repeated measures was used to assess for treatment effects on the dependent variables. Improvements in 27.3 and 36.6 m sprint times (<0.10 s) were evident during the first 6 weeks for PEP, but reverted back to baseline values by 12 weeks; there were no changes for 9.1 or 18.2 m sprint times in either group. There was no change in the CMJ height for PEP; however, there was a decrement at 6 and 12 weeks compared with baseline in CON. Performance on the Illinois and pro-agility tests declined in both groups. Our findings demonstrate that improvements in linear sprint performance were small and transient in adolescent female soccer players, and that there was no benefit of the PEP program on CMJ or agility performance. ACL injury prevention programs designed as a structured warm-up routine seem to lack the necessary stimulus to enhance athletic performance.

Sport-related concussion

Sport-related concussion is a common injury in children and adolescents. Athletes seldom report concussive symptoms, which makes the diagnosis a challenge. The management of sport-related concussion has changed significantly over the last several years. The previously used grading systems and return-to-play guidelines have been abandoned in favor of more individualized assessment and management. Neuropsychological testing is being used more frequently to assist in management. After recovery, it is recommended that an athlete's return-to-play progress in a gradual, stepwise fashion while being monitored by a health care provider. Proper assessment and management of a sport-related concussion is crucial, because repeat concussions can result in decreased neurocognitive functioning, increased symptomatology, and, at times, catastrophic outcomes.

Sports injuries surveillance during the 2007 IAAF World Athletics Championships

OBJECTIVE

The aim of this study was to analyze all sports injuries incurred in competitions and/or training during the 2007 World Athletics Championships and to prove the feasibility of the injury surveillance system developed for the 2008 Olympic Games for individual sports.

DESIGN

Prospective recording of injuries.

SETTING

11 IAAF World Championships in Athletics 2007 in Osaka, Japan.

PARTICIPANTS

All national team physicians and physiotherapists; Local Organising Committee (LOC) physicians working in the Medical Centres at the stadium and warm-up area.

MAIN OUTCOME MEASURES

Frequency, characteristics, and incidence of injuries.

RESULTS

192 injuries were reported, resulting in an incidence of 97 injuries per 1000 registered athletes. More than half of the injuries (56%) were expected to prevent the athlete from participating in competition or training. Eighty percent affected the lower extremity; the most common diagnosis was thigh strain (16%). In most cases, the injury was caused by overuse (44%). A quarter of the injuries were incurred during training and 137 (71%) in competition. On average, 72.4 injuries per 1000 competing athletes were incurred in competitions. The incidence of injury varied substantially among the disciplines. The risk of a time-loss injury was highest in heptathlon, women's 10,000 m, women's 3000 m steeplechase, decathlon, and men's marathon.

CONCLUSION

The injury surveillance system proved feasible for individual sports. Risk of injury varied among the disciplines, with highest risk in combined disciplines, steeplechase, and long-distance runs. Preventive interventions should mainly focus on overuse injuries and adequate rehabilitation of previous injuries.

Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial

OBJECTIVE

To examine the effect of a comprehensive warm-up programme designed to reduce the risk of injuries in female youth football.

DESIGN

Cluster randomised controlled trial with clubs as the unit of randomisation.

SETTING

125 football clubs from the south, east, and middle of Norway (65 clusters in the intervention group; 60 in the control group) followed for one league season (eight months).

PARTICIPANTS

1892 female players aged 13-17 (1055 players in the intervention group; 837 players in the control group).

INTERVENTION

A comprehensive warm-up programme to improve strength, awareness, and neuromuscular control during static and dynamic movements.

MAIN OUTCOME MEASURE

Injuries to the lower extremity (foot, ankle, lower leg, knee, thigh, groin, and hip).

RESULTS

During one season, 264 players had relevant injuries: 121 players in the intervention group and 143 in the control group (rate ratio 0.71, 95% confidence interval 0.49 to 1.03). In the intervention group there was a significantly lower risk of injuries overall (0.68, 0.48 to 0.98), overuse injuries (0.47, 0.26 to 0.85), and severe injuries (0.55, 0.36 to 0.83).

CONCLUSION

Though the primary outcome of reduction in lower extremity injury did not reach significance, the risk of severe injuries, overuse injuries, and injuries overall was reduced. This indicates that a structured warm-up programme can prevent injuries in young female football players.

TRIAL REGISTRATION

ISRCTN10306290.

Tackle mechanisms and match characteristics in women's elite football tournaments

BACKGROUND

Several tools have been used for assessing risk situations and for gathering tackle information from international football matches for men but not for women.

PURPOSE

To analyse activities in women's football and to identify the characteristics and risk potentials of tackles.

STUDY DESIGN

Retrospective video analysis.

METHOD

Video recordings of 24 representative matches from six women's top-level tournaments were analysed for tackle parameters and their risk potential.

RESULTS

3531 tackles were recorded. Tackles in which the tackling player came from the side and stayed on her feet accounted for nearly half of all challenges for the ball in which body contact occurred. 2.7% of all tackles were classified as risk situations, with sliding-in tackles from behind and the side having the highest risk potential. Match referees sanctioned sliding-in tackles more often than other tackles (20% v 17%, respectively). Tackle parameters did not change in the duration of a match; however, there was an increase in the number of injury risk situations and foul plays towards the end of each half.

CONCLUSIONS

Match properties provide valuable information for a better understanding of injury situations in football. Staying on feet and jumping vertically tackle actions leading to injury were sanctioned significantly more times by the referee than those not leading to injury (p<0.001), but no such difference was seen for sliding-in tackles (previously reported to have the highest injury potential in women's football). Therefore, either the laws of the game are not adequate or match referees in women's football are not able to distinguish between sliding-in tackles leading to and those not leading to injury.

Causation of injuries in female football players in top-level tournaments

BACKGROUND

Analyses of tackle parameters in injury situations have provided valuable information regarding men's football. However, there are no similar data for women's football.

OBJECTIVE

To categorise the tackle mechanisms leading to injury in elite women's football.

STUDY DESIGN

Retrospective video analysis of injury situations.

METHODS

Events associated with all reported injuries during six women's top-level tournaments were analysed on video recordings for tackle parameters.

RESULTS

More than half of all injuries were due to tackles from the side (52%, 103/200), whereas tackles from behind were much less commonly involved in injury situations (11%, 21/200). One-footed (65%, 130/200) and upper body (21%, 42/200) tackle actions were most common. Sliding-in tackles leading to injury were the least likely to be sanctioned by match referees. Tackling players (45%, 90/200) were almost as likely to be injured as the tackled player (55%).

CONCLUSION

The present study found differences between injury mechanisms in women's football and previously published data on men's football. Further research, especially using video analysis, is needed for a better understanding of risk situations in football.