Soccer injury prevention for girls.
The highest ACL burden in girls' sport — and the best evidence for preventing it.
~30–50%
Reduction in overall injuries reported in trials of structured warm-up programs in young female footballers.1,6
2×/wk
Minimum frequency at which the protective effect holds across a season.1
Girls' soccer produces more ACL injuries than any other high school sport in the United States, and the great majority are non-contact: a deceleration, a cut, or a single-leg landing where the knee collapses inward while the foot stays planted. Ankle sprains are more frequent still, and concussion rates in girls' soccer are consistently higher than in boys' soccer at the same level.
Soccer is also the sport where prevention is best proven. Cluster-randomised trials of structured neuromuscular warm-ups in young female footballers have reported substantial reductions in overall and severe injuries, and the PEP program produced large ACL reductions in female club soccer. The barrier is not evidence; it is adherence.
What actually injures soccer players
Non-contact ACL rupture
Low incidence, highest consequenceMechanism: Sharp deceleration, planting to change direction, or landing from a header on one leg with the knee falling inward (dynamic valgus) and the trunk off-balance.
Female-specific: Prospective biomechanics work found greater knee abduction angle and moment on landing predicted future ACL injury in female athletes. That mechanic is trainable.10,3
Lateral ankle sprain
Most common time-loss injuryMechanism: Landing on another player's foot, or an inversion moment during a cut on uneven ground.
Female-specific: Recurrence is the real problem: a first sprain roughly doubles the risk of the next unless proprioceptive rehab is completed, and girls frequently return before balance is restored.7,3
Concussion
High relative to boys' soccerMechanism: Head-to-head and head-to-ground contact during aerial challenges — heading the ball itself is rarely the direct mechanism.
Female-specific: Female athletes report higher concussion rates and longer symptom duration than males in the same sport, and rules should reflect that: no same-day return, symptom-limited graded progression.8,9
Hamstring and adductor strain
Common in sprinting and long-kicking playersMechanism: High-speed running (hamstring) and repeated change of direction or striking across the body (adductor).
Female-specific: Relative hamstring weakness compared with quadriceps is a repeated finding in female athletes and is directly addressed by eccentric work such as Nordic lowers.6
Why the risk is different for girls
These factors change what prevention has to address — they are not reasons to train girls less.
The knee-in landing pattern is learned, not fixed
Girls' higher ACL rate is often attributed to anatomy — wider pelvis, narrower notch, greater laxity — but the strongest prospective predictor is a modifiable movement variable: how much the knee falls inward under load. Training that rehearses two-second stuck landings with knees tracking over toes changes it within weeks.10,14
Energy availability comes before every other adaptation
When an athlete does not eat enough to cover the energy her training burns, the body downregulates the systems it treats as optional first — menstrual function, bone remodeling, immune response, and tissue repair. The IOC calls this Relative Energy Deficiency in Sport (REDs), and it raises bone stress injury and soft-tissue injury risk independent of how good her mechanics are. Amenorrhea (no period for three or more months) in an athlete is a clinical finding, not a convenience.11,12,17
Puberty changes the machine mid-season
The adolescent growth spurt lengthens the levers (femur, tibia) faster than the neuromuscular system recalibrates, and in girls the strength gain that accompanies growth is smaller than in boys. The result is a two- to three-year window of reduced dynamic knee control, wider dynamic valgus on landing, and higher relative injury risk. Programming should get more — not less — landing and single-leg work through this window.10,5
Menstrual-cycle phase is a variable, not a taboo
Hormonal fluctuation across the cycle affects laxity, neuromuscular control, thermoregulation, and perceived exertion, and prospective data in international footballers found injury incidence differed by cycle phase. The practical action is not to restrict training but to track: a simple cycle log next to load data lets athletes and staff see patterns and adjust intensity, hydration, and fueling.13
The protocol, block by block
Replaces the existing warm-up. Run before every training session, twice a week minimum, plus a shortened version on match day.
Block 1 of 6
Dynamic running
Straight-ahead jog, hip-out and hip-in openers, shuttle runs, backward running. The purpose is warm tissue and switched-on hips.
- Short quick ground contacts
- Chest tall, eyes up
- No sprinting yet
What to check, and when to escalate
Drop vertical jump
Athlete steps off a 30 cm box, lands on both feet, immediately jumps maximally. Film from the front at knee height.
Red flag: Knees travel inside the line of the big toes on landing, or one knee collapses more than the other.
Single-leg hop and stick
Hop forward on one leg and hold the landing for three seconds. Compare sides.
Red flag: Inability to hold three seconds, visible trunk lean, or more than 10% side-to-side distance difference.
Menstrual and fueling check-in
Confidential preseason question set: cycle regularity, breakfast before morning training, unexplained fatigue, any prior stress fracture.
Red flag: No period for three or more months, or skipping meals around training — refer to a clinician.
Load rules that prevent overuse
- Cap weekly increases in high-speed running and total minutes at roughly 10%; spikes after a break are when soft-tissue injuries cluster.
- One full rest day per week and one off-season block per year, with no club-plus-school double season.
- Play fewer than eight months of soccer a year before age 16, and avoid single-sport specialization before puberty.
- Track tournament weekends separately — three games in two days is a load spike no weekly average will show.
Gear & equipment
- Boots matched to surface — long studs on firm ground concentrate rotational load at the knee.
- Shin guards that fit; oversized guards get removed or slipped and stop protecting the tibia.
- Prophylactic ankle bracing or taping for athletes with a prior sprain, alongside — not instead of — balance rehab.
Stages, not dates
Progression is criteria-based and clinician-led. A calendar date is not a clearance.
Stage 1 of 5
1. Symptom-free daily function
Full pain-free range of motion, normal gait, no swelling after activities of daily living.
Questions coaches and parents ask
The act of heading a properly inflated ball is rarely the direct cause. Most soccer concussions come from head-to-head, elbow-to-head, or head-to-ground contact during aerial challenges. Heading restrictions for younger age groups reduce those contested situations, which is where the benefit comes from.
Every claim, sourced
17 peer-reviewed sources. Each links to its PubMed record so you can read the original.
- 1
Soligard T, Myklebust G, Steffen K, et al. Comprehensive warm-up programme to prevent injuries in young female footballers: cluster randomised controlled trial. BMJ. 2008;337:a2469.
PubMed 19066253 - 2
Mandelbaum BR, Silvers HJ, Watanabe DS, et al. Effectiveness of a neuromuscular and proprioceptive training program in preventing anterior cruciate ligament injuries in female athletes: 2-year follow-up. Am J Sports Med. 2005;33(7):1003-1010.
PubMed 15888716 - 3
Dick R, Putukian M, Agel J, Evans TA, Marshall SW. Descriptive epidemiology of collegiate women's soccer injuries: NCAA Injury Surveillance System, 1988-1989 through 2002-2003. J Athl Train. 2007;42(2):278-285.
PubMed 17710177 - 4
LaBella CR, Huxford MR, Grissom J, Kim KY, Peng J, Christoffel KK. Effect of neuromuscular warm-up on injuries in female soccer and basketball athletes in urban public high schools. Arch Pediatr Adolesc Med. 2011;165(11):1033-1040.
PubMed 22065184 - 5
Emery CA, Roy TO, Whittaker JL, Nettel-Aguirre A, van Mechelen W. Neuromuscular training injury prevention strategies in youth sport: a systematic review and meta-analysis. Br J Sports Med. 2015;49(13):865-870.
PubMed 26084526 - 6
Lauersen JB, Bertelsen DM, Andersen LB. The effectiveness of exercise interventions to prevent sports injuries: a systematic review and meta-analysis of randomised controlled trials. Br J Sports Med. 2014;48(11):871-877.
PubMed 24100287 - 7
Verhagen E, van der Beek A, Twisk J, Bouter L, Bahr R, van Mechelen W. The effect of a proprioceptive balance board training program for the prevention of ankle sprains: a prospective controlled trial. Am J Sports Med. 2004;32(6):1385-1393.
PubMed 15310562 - 8
Covassin T, Moran R, Elbin RJ. Sex differences in reported concussion injury rates and time loss from participation: an update of the National Collegiate Athletic Association Injury Surveillance Program from 2004-2005 through 2008-2009. J Athl Train. 2016;51(3):189-194.
PubMed 26950073 - 9
Patricios JS, Schneider KJ, Dvorak J, et al. Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. Br J Sports Med. 2023;57(11):695-711.
PubMed 37316210 - 10
Hewett TE, Myer GD, Ford KR, et al. Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study. Am J Sports Med. 2005;33(4):492-501.
PubMed 15722287 - 11
Mountjoy M, Ackerman KE, Bailey DM, et al. 2023 International Olympic Committee's (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs). Br J Sports Med. 2023;57(17):1073-1097.
PubMed 37752011 - 12
De Souza MJ, Nattiv A, Joy E, et al. 2014 Female Athlete Triad Coalition consensus statement on treatment and return to play of the female athlete triad. Br J Sports Med. 2014;48(4):289.
PubMed 24463911 - 13
Martin D, Timmins K, Cowie C, et al. Injury incidence across the menstrual cycle in international footballers. Front Sports Act Living. 2021;3:616999.
PubMed 33733235 - 14
Sugimoto D, Myer GD, Foss KDB, Hewett TE. Dosage effects of neuromuscular training intervention to reduce anterior cruciate ligament injuries in female athletes: meta- and sub-group analyses. Sports Med. 2014;44(4):551-562.
PubMed 24370992 - 15
Gabbett TJ. The training—injury prevention paradox: should athletes be training smarter and harder? Br J Sports Med. 2016;50(5):273-280.
PubMed 26758673 - 16
Jayanthi N, Pinkham C, Dugas L, Patrick B, LaBella C. Sports specialization in young athletes: evidence-based recommendations. Sports Health. 2013;5(3):251-257.
PubMed 24427397 - 17
Ackerman KE, Cano Sokoloff N, De Nardo Maffazioli G, Clarke HM, Lee H, Misra M. Fractures in relation to menstrual status and bone parameters in young athletes. Med Sci Sports Exerc. 2015;47(8):1577-1586.
PubMed 25397605
Go deeper