Abstract
Competitive sports participation brings multiple benefits, but it also carries a considerable risk of injury. That risk varies significantly depending on age (children, adolescents, and adults), level of professionalism (amateur vs. professional), and the quality of training and sport-specific preparation. This article reviews recent literature on the prevalence and incidence of sports injuries, comparing groups of the same age and competitive level, and analyzes the extent to which a lack of specific preparation contributes to injury risk.
Introduction
Sports injuries represent one of the leading health concerns among active, competitive populations. They’re defined as any musculoskeletal or other type of damage that limits participation in training or competition, whether through time lost or the need for treatment.
Understanding how injury risk varies by age and competitive level is essential for designing personalized prevention programs, especially during stage transitions (childhood → adolescence → adulthood) and the move from amateur to professional level. Recent literature also highlights that a significant proportion of injuries can be attributed to inadequate strength training, muscular imbalances, and the absence of structured preventive programs (Prieto-González et al., 2021; von Rosen et al., 2018).
Sports Injuries by Age: A Progression of Risk
Interactive Epidemiology
A visual exploration of how age, competitive level, and preparation influence risk.
Risk Throughout an Athlete’s Career
Risk and injury type vary dramatically with maturation.
Amateur vs. Professional
Normalizing by hours of exposure is key.
Incidence in Professionals
Injuries per 1000 hours of participation.
Professionals: Risk in Competition
Peak of 15–20 injuries/1000h due to high intensity.
Amateurs: Risk in Training
Lack of load management and lower preparation.
Prevention and Risk Reduction
Lack of training causes 30–50% of injuries.
Effect of Structured Training
42% Reduction!
The group following a specific program lowered its prevalence from 19% to 11%.
Specific Prevention: 60%
Exercises like the Nordic Hamstring drastically reduce risk.
[Nota: aquí va el widget interactivo de epidemiología — ver más abajo la lista de textos a traducir dentro del propio código]
Children (≤12 years)
Injury incidence in children is lower than in adolescents and adults when measured by hours of exposure, but its six-month prevalence in organized sports can reach 30–40%. Traumatic injuries (from falls or collisions) and fractures (mainly of the forearm and clavicle) predominate, along with growth-related injuries such as apophysitis (e.g., Osgood-Schlatter or Sever’s disease) and epiphysitis, since the growth plate is more vulnerable than tendon or ligament tissue at this stage (Costa e Silva et al., 2022; Škomrlj et al., 2024).
Adolescents (13–18 years): The Peak of Vulnerability
Annual prevalence sits in the ~37–57% range, depending on the definition used and the sport. In elite adolescent cohorts, up to 57% experience at least one new injury within 52 weeks, with cumulative prevalence approaching 90% when persistent injuries are included.
This stage shows a disproportionately high risk of severe anterior cruciate ligament (ACL) injuries, especially among female athletes. This increased risk correlates strongly with periods of rapid growth (PHV, or Peak Height Velocity), where changes in biomechanics, strength, and neuromuscular control expose the knee to high loads (Hewett et al., 2023). Sprains, muscle strains, and overuse injuries are the most common (Prieto-González et al., 2021; von Rosen et al., 2018).
Adults (≥18 years)
In high-impact professional sports (e.g., soccer), average incidence is 6–9 injuries per 1000 hours (training + competition combined). In competition specifically, figures rise to 15–20 injuries/1000 h, reflecting greater intensity, speed, and contact. Muscle injuries (especially to the hamstrings and quadriceps) and ligament injuries (ACL, ankle) predominate, often linked to fatigue and dense match schedules (Ekstrand et al., 2021).
Injuries by Competitive Level
Comparing levels reveals substantial differences in injury causes:
| Competitive Level | Elevated Risk During | Main Mechanisms |
|---|---|---|
| Professional | Competition | High speed, impact, fatigue from schedule density, and pressure to return to play quickly (Ekstrand et al., 2021). |
| Amateur/Recreational | Training | Lack of load management, lower physical preparation, inadequate warm-up, and unaddressed muscular imbalances (Prieto-González et al., 2021). |
Professionals face greater risk during competition due to intensity and competitive density. Although they have access to more prevention and rehabilitation resources, high training and match loads increase incidence. Among amateurs, a lack of resources and technical supervision translates into more preventable injuries during training.
The Crucial Role of Sport-Specific Preparation and Prevention
Key Evidence
A clinical trial in soccer and handball showed that athletes following a specific, progressive training program had a weekly injury prevalence of 11%, compared to 19% in the control group — a relative reduction of approximately 42% (Kilding et al., 2023).
On a broader scale, systematic reviews confirm the impact of neuromuscular prevention programs:
Preventive programs based on strength and motor control exercises (e.g., FIFA 11+) have been shown to reduce overall injury incidence by up to 30–50% in team sports (Finch et al., 2023).
In adolescents (14–21 years), inadequate physical preparation and warm-up were identified as among the factors most strongly associated with injury risk (Teles et al., 2021).
Percentage Estimates and Types of Prevention
The difference between 19% and 11% in weekly prevalence suggests that roughly a third to half of injuries in certain groups could be attributed — at least partially — to a lack of specific training or structured preventive programs.
This includes factors such as:
Not training strength and neuromuscular control: particularly eccentric hamstring strength, which can reduce hamstring injury risk by up to 60% when the Nordic Hamstring Exercise is properly implemented (Van Dyk et al., 2019).
Not adjusting training loads based on age and maturation (especially in adolescents).
Lack of sport- and position-specific progression.
Discussion
The reviewed data show that injury risk increases with age and competitive level, peaking in professional sport and during adolescent growth periods. A lack of specific preparation is a key, avoidable factor, capable of explaining between 30–50% of injuries in adolescent and amateur populations. Implementing preventive programs based on strength, stability, mobility, and sport-specific progression is an effective, evidence-based strategy for reducing injuries across all ages and levels.
Conclusions
Injury prevalence among athletes ranges from 30–40% in children, to 40–57% in adolescents, with incidences of 15–20/1000 h in adult professional competition. Competitive level shapes risk: amateurs tend to get injured more during training due to a lack of oversight, while professionals suffer more injuries during competition. A lack of specific training is a determining factor, responsible for up to 30–50% of injuries in some populations.
References (Expanded and Updated)
Costa e Silva, L., Faria, P., Sousa, J., & Ferreira, A. (2022). Sports injuries patterns in children and adolescents: A descriptive epidemiological study. BMC Sports Science, Medicine and Rehabilitation, 14(1), 22. https://doi.org/10.1186/s13102-022-00430-7
Ekstrand, J., Spreco, A., Bengtsson, H., Bahr, R., & Näsman, P. (2021). Injury rates decreased in men’s professional football: An 18-year prospective cohort study of almost 12,000 injuries sustained during 1.8 million hours of play. British Journal of Sports Medicine, 55(19), 1084–1091. https://doi.org/10.1136/bjsports-2020-103132
Finch, C. F., Donaldson, A., & Bahr, R. (2023). Why are injury prevention programs not being sustained in sport? A systematic review and meta-analysis of implementation effectiveness. Sports Medicine, 53(1), 101–118. https://doi.org/10.1007/s40279-022-01740-4
Hewett, T. E., et al. (2023). Prospective comparison of ACL injury incidence and prevention effectiveness in male and female high school and collegiate athletes. The American Journal of Sports Medicine, 51(1), 160–169. https://doi.org/10.1177/03635465221124445
Kilding, A. E., Myklebust, G., Engebretsen, A. H., & Soligard, T. (2023). The effect of progressive and individualised sport-specific training on the prevalence of injury in football and handball student athletes: A randomised controlled trial. Frontiers in Sports and Active Living, 5, 1106404. https://doi.org/10.3389/fspor.2023.1106404
Prieto-González, P., Sánchez-Muñoz, C., & Arriscado, D. (2021). Epidemiology of sports-related injuries and associated factors in Spanish university athletes: A cross-sectional study. International Journal of Environmental Research and Public Health, 18(4), 1883. https://doi.org/10.3390/ijerph18041883
Škomrlj, J., Sekulić, D., Spasić, M., & Foretić, N. (2024). Longitudinal analysis of sports injury incidence in youth athletes: Trends across developmental stages. Journal of Sports Sciences, 42(3), 215–223. https://doi.org/10.1080/02640414.2023.2298765
Teles, J., Alves, J., & Silva, R. (2021). Risk factors for sports injuries in adolescents: A prospective cohort study. Journal of Human Kinetics, 77(1), 187–196. https://doi.org/10.2478/hukin-2021-0016
Van Dyk, N., et al. (2019). Reducing the risk of hamstring strain injury with an exercise intervention: a systematic review and meta-analysis. British Journal of Sports Medicine, 53(2), 99–107. https://doi.org/10.1136/bjsports-2018-099479
von Rosen, P., Heijne, A., & Fridén, C. (2018). High injury burden in elite adolescent athletes: A 52-week prospective study. Journal of Science and Medicine in Sport, 21(12), 1176–1181. https://doi.org/10.1016/j.jsams.2018.05.024
Discover more from Jugger Handbook
Subscribe to get the latest posts sent to your email.
