Training the child athlete: physical fitness, health and injury

The number of children and adolescents participating in organised athletic activities worldwide is increasing. However, physical fitness levels among youth are lower today than in previous decades. The combination of increased exposure and decreased preparedness for sports participation has led to an epidemic of both acute and chronic sports-related injuries in this population. Poor physical fitness, in addition to having negative health consequences, seems to be a risk factor for sports-related injury. Accurate injury surveillance data are required to better define the magnitude of the problem of injury in youth sports, as well as to identify specific risk factors for injury. From these data, targeted intervention strategies incorporating fitness training may be developed with the goal of preventing sports-related injury. Preliminary experience with several specific injury patterns--anterior cruciate ligament injuries and ankle sprains--has demonstrated the efficacy of such targeted prevention strategies.     

Injury Patterns in Youth Sports

In brief: Millions of US children participate in recreational activities, organized youth leagues, and interscholastic sports programs. Although they enjoy and obtain health benefits from these activities, 3% to 11% of these children are injured while participating in sports programs each year. Epidemiologic studies show that different sports pose different types and degrees of risk and that injuries among children differ from those among adolescents. An awareness of injury patterns in youth sports helps physicians and others who care for children to identify variables associated with injury. Measures must be taken in all youth sports programs to modify such variables in an effort to prevent injuries.     

Sports‐related injuries in athletes with disabilities

The number of athletes with disabilities participating in organized sports and the popularity of the Paralympic Games is steadily increasing around the world. Despite this growing interest and the fact that participation in sports places the athlete at risk for injury, there are few studies concerning injury patterns, risk factors, and prevention strategies of injuries in disabled athletes. In this systematic literature search and critical review, we summarize current knowledge of the epidemiology of sports‐related injuries in disabled athletes and describe their characteristics, incidence, prevalence, and prevention strategies. The outcomes of interest were any injury, either an acute trauma or an overuse event. PubMed, EMBASE, CINAHL, and Google Scholar were systematically searched and 25 of 605 identified studies met the inclusion criteria. Lower extremity injuries were more common in walking athletes, whereas upper extremity injuries were more prevalent in wheelchair athletes. The methodologies and populations varied widely between the studies. Few studies were sports or disability specific, which makes it difficult to determine specific risk factors, and few studies reported injury severity and prevention of injuries. Further longitudinal, systematic sports and disability specific studies are needed in order to identify and prevent injuries in athletes with disabilities.     

Lower limb injuries in children in sports

This article presents an overview of sports-related injuries of the lower limb in children, with emphasis on the management. The special injury-related conditions of childhood, epidemiology, and the particular pattern of injuries are discussed. The increased participation of children in sports will continue. Permanent damage is a risk, and, as such, prevention should be the most important management in this age group. For example, stretching exercises should be performed with "warm" muscles. Excessive weight training has an unacceptable risk of injury. In endurance sports, the "10 percent rule," which consists of increasing activity by 10% each week, probably could be applied to prevent overuse injuries. A multifactorial approach may be helpful. The rationale for high performance, competitive sports for children is doubtful. The optimal levels of safe training will remain changeable and not predictable. It should be the responsibility of parents, coaches, and healthcare professionals to try and minimize the potential for injury and disability, and allow children to enjoy the benefits of sports.     

Injuries in team sport tournaments during the 2004 Olympic Games

BACKGROUND: Several authors have analyzed the incidence of injuries in a given sport, but only a few have examined the exposure-related incidence of injuries in different types of sports using the same methodology. PURPOSE: Analysis of the incidence, circumstances, and characteristics of injuries in different team sports during the 2004 Olympic Games. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: During the 2004 Olympic Games, injuries in 14 team sport tournaments (men's and women's soccer, men's and women's handball, men's and women's basketball, men's and women's field hockey, baseball, softball, men's and women's water polo, and men's and women's volleyball) were analyzed. After each match, the physician of the participating teams or the official medical representative of the sport completed a standardized injury report form. The mean response rate was 93%. RESULTS: A total of 377 injuries were reported from 456 matches, an incidence of 0.8 injuries per match (95% confidence interval, 0.75-0.91) or 54 injuries per 1000 player matches (95% confidence interval, 49-60). Half of all injuries affected the lower extremity; 24% involved the head or neck. The most prevalent diagnoses were head contusion and ankle sprain. On average, 78% of injuries were caused by contact with another player. However, a significantly higher percentage of noncontact (57%) versus contact injuries (37%) was expected to prevent the player from participating in his or her sport. Significantly more injuries in male players (46%) versus female players (35%) were expected to result in absence from match or training. The incidence, diagnosis, and causes of injuries differed substantially between the team sports. CONCLUSION: The risk of injury in different team sports can be compared using standardized methodology. Even if the incidence and characteristics of injuries are not identical in all sports, prevention of injury and promotion of fair play are relevant topics for almost all team sports.     

The Harstad injury prevention study: the epidemiology of sports injuries. An 8 year study.

OBJECTIVE--To describe the epidemiology of sports injuries occurring in a community during 8 years and to evaluate the outcome of an intervention implemented against injuries occurring in downhill skiing. METHODS--Hospital treated sports injuries occurring in Harstad, Norway (population 22 600) were recorded prospectively during an 8 year period. A prevention programme targeting downhill skiing injuries was evaluated. RESULTS--2234 sports injuries accounted for 17.2% of recorded unintentional injuries. Two out of three injuries occurred in team sports. Soccer accounted for 44.8% of all sports injuries. Downhill skiing injuries had higher mean score on the abbreviated injury scale than all other sports analysed combined (P < 0.01). Postintervention injury rates for downhill skiing were reduced by 15% when adjusting for exposure (P = 0.24). Further observations are needed for assessing the effectiveness of the downhill skiing safety programme. CONCLUSIONS--Strategies for future sports injury prevention include community involvement, particularly sports organisations. Local data analysis seems to justify some priorities, for example, promotion of helmet use in downhill skiing for young adolescents and prevention of lower limb fractures in male soccer players 15+ years old. Prospective hospital recording of injuries provides a tool for the design and outcome evaluation of sports injury intervention research.     

Trends in sports injuries, 1982-1988: an in-depth study on four types of sport.

In this study, we analyzed the records of both inpatients and outpatients which were treated for acute sports injuries in the Trauma Department of the University of Groningen (The Netherlands) during the years 1982 to 1988. We examined whether there was a trend in sports injuries in this time period. The study comprised four types of sports, i.e., soccer, volleyball, gymnastics, and martial arts. The absolutely highest rates of injuries across the seven years were found in soccer, followed by gymnastics, volleyball, and martial arts. Injuries sustained at participating in soccer, volleyball, and gymnastics involved for the major part the lower extremities, followed by injuries of the upper extremities, whereas the reverse pattern was observed for patients who participated in martial arts. For all four types of sport, the ankle and foot were the most frequently site of injury of the lower extremities. Sprains and strains were the major types of injury. Most injuries were seen at ages between 10 and 30 years. The ratio of male to female patients within age groups did not differ significantly across the seven years. We concluded that, except for martial arts, the increased participation in sports in the last decade was not accompanied with a change in the patterns of sports injuries by the patients' age, sex, and number and nature of the injury. This consistency in results can be used to guide the development of prevention programs aimed at a reduction of injuries in specific sports.     

Epidemiology of injury in child and adolescent sports: injury rates, risk factors, and prevention

The epidemiology of sports injuries in children and youth is an important area of research that has been largely overlooked in the medical and sport science literature. This article presents an overview of the analytic aspects of pediatric sports injury epidemiology, focusing on injury risk factors and preventive measures. The review indicates that few modifiable injury risk factors have been statistically evaluated, and not many studies have been designed to determine the effect of injury prevention measures in pediatric sports. However, initial results are promising. Specific directions for further analytic research are presented.     

Risk factors for acute and overuse sport injuries in Swedish children 11 to 15 years old: What about resistance training with weights?

To determine the 1‐year self‐reported incidence of overuse and traumatic sport injuries and risk factors for injuries in children participating in a summer sports camp representing seven different sports. 4363 children, 11 to 15 years old participating in a summer camp in seven different sports answered a questionnaire. Injury in this cross‐sectional study was defined as a sport‐related trauma or overload leading to pain and dysfunction preventing the person from participation in training or competition for at least 1 week. A number of risk factors for injury were investigated such as sex, age, number of hours spent on training in general, and on resistance training with weights. Nearly half [49%, 95% confidence interval (CI) 48–51%] of the participants had been injured as a result of participation in a sport during the preceding year, significantly more boys than girls (53%, 95% CI 50–55% vs 46%, 95% CI 43–48%; P < 0.001). Three factors contributed to increased incidence of sport injuries: age, sex, and resistance training with weights. Time spent on resistance training with weights was significantly associated with sport injuries in a logistic regression analysis. In children age 11 to 15 years, the risk of having a sport‐related injury increased with age and occurred more often in boys than in girls. Weight training was the only modifiable risk factor that contributed to a significant increase in the incidence of sport injuries.     

Behaviour, the key factor for sports injury prevention

Safety in sports and physical activity is an important prerequisite for continuing participation in sports, as well as for maintenance of a healthy physically active lifestyle. For this reason, prevention, reduction and control of sports injuries are important goals for society as a whole. Recent advances in sports medicine discuss the need for research on real-life injury prevention. Such views call for a more behavioural approach when it comes to actual sports injury prevention. Nevertheless, the role of behaviour in sports injury prevention remains under-researched. In order to push the field of sports injury prevention forward, this article provides an overview of the relationship between behaviour and sports injury risk. Different types of behaviour relate to injury risk factors and injury mechanisms. Behaviour that influences risk factors and injury mechanisms is not confined only to the athlete. Various types of behaviour by, for example, the coach, referee, physical therapist or sports associations, also influence risk factors and injury mechanisms. In addition, multiple behaviours often act together. Some types of behaviour may directly affect injury risk and are by definition a risk factor. Other behaviours may only affect risk factors and injury mechanisms, and influence injury risk indirectly. Recent ideas on injury prevention that call for studies on real-life injury prevention still rely heavily on preventive measures that are established through efficacy research. A serious limitation in such an approach is that one expects that proven preventive measures will be adopted if the determinants and influences of sports safety behaviours are understood. Therefore, if one truly wants to prevent sports injuries in a real-life situation, a broader research focus is needed. In trying to do so, we need to look at lessons learned from other fields of injury prevention research.     

The prevention of sports injuries in children

With the explosion of the number of youth participating in sports activities has come an epidemic of injuries. Myriad factors make their prevention a great challenge for society. This article presents an overview of statistics, factors contributing to sports injuries, a review of significant prevention efforts, barriers to prevention, and recommendations for the future.     

Sports related injuries in Scottish adolescents aged 11-15

OBJECTIVES: To measure the age and sex distribution of self reported sports and leisure injuries in a 12 month retrospective recall period among a representative national sample of Scottish adolescents, and to examine the characteristics (gender, age, handedness, and level of sports participation) of sports related injuries in relation to injuries sustained during other activities. DESIGN/SETTING: Self completion questionnaire survey administered in schools during April- June 1994. SUBJECTS: 4710 pupils aged 11, 13, and 15 years drawn from a representative sample of 270 classes with returns from 224 classes (83% completion rate). RESULTS: 42.1% of the sample reported a medically attended injury. These were significantly more frequent among boys but there were no significant age differences in overall frequency of injury. Sport related injuries accounted for 32.2% of all medically attended injuries. As with all injuries, frequency was greater in boys than girls at all ages, and there are differences in the pattern of lesions in sports and nonsports injuries. Lower limb injuries were more frequent than upper limb injury in sports (57.6 v 23.9%), whereas there were no differences in non-sports injuries (31.5 v 31.3%). Age and handedness differences in sports injury rates were also identified. High sports participation was significantly associated with a higher risk of injury in general and sports related injury in particular. CONCLUSION: Age, gender, handedness, and level of sports participation have been shown to be implicated in differential risk of sports related injury. Reducing sports injury among adolescents should be a priority, but research into the injury profiles of different sports is needed before detailed injury prevention strategies can be developed.     

Anterior cruciate ligament injury prevention

Anterior cruciate ligament (ACL) injuries are common in athletes participating in sports requiring jumping and pivoting maneuvers. Recent research has attempted to identify potential risk factors and to develop interventions to address these risk factors in order to help prevent ACL injuries. Neuromuscular, hormonal, anatomic, and environmental factors have been studied. Interventions addressing neuromuscular factors appear particularly promising. This article reviews and summarizes current data regarding ACL injury risk factors and prevention efforts.     

Non-fatal sports and recreational violent injuries among children and teenagers, United States, 2001–2003

BACKGROUND: An estimated 2.7 million non-fatal unintentional sports and recreational injuries are treated in U.S. hospital emergency departments (EDs) annually. However, little is known about the number of sports and recreational injuries resulting from violent behavior. METHODS: Data for 2001-2003 on sports and recreational injuries were obtained from the National Electronic Injury Surveillance System-All Injury Program (NEISS-AIP)-a national sample of 66 U.S. EDs. National estimates and rates of persons treated for violence-related sports and recreational injuries in EDs are compared to those treated for unintentional sports and recreational injuries. Types of injuries and injury circumstances are described. RESULTS: During the study period, an estimated 6,705 (8.3 per 100,000; 95% confidence intervals (CI), 6.3-10.3) children and teenagers with violence-related sports and recreational injuries were treated in U.S. EDs annually, compared to 2,698,634 children and teenagers with unintentional sports and recreational injuries. Thus, violent behavior accounted for 0.25% of sports and recreational injuries. The highest incidence rate (13.6 per 100,000) for violence-related sports and recreational injuries was for children aged 10-14 years. Most patients with violence-related sports and recreational injuries were treated and released from the ED. A majority of those with violence-related sports and recreational injuries were injured to the head/neck region (52.2%), of which 24.1% were treated for traumatic brain injuries. Most violent injuries resulted from being pushed or hit (65.6%); the most common sports and recreational activity varied by age: playground (65.2%) for children < or =9 years; bicycling (26.7%) for 10-14-year-olds; basketball (45.3%) for 15-19-year-olds. CONCLUSIONS: National ED surveillance systems can provide useful information pertaining to prevention programs designed to reduce sports and recreational injuries resulting from violent behavior and unintentional causes.     

The public health impact of injury during sport and active recreation

Injuries can be an adverse outcome of participation in sport and recreational activities. The aim of this study was to determine the public health impact of injury during sports and active recreation injury in a select population in Australia. A random household telephone survey was conducted quarterly over a 12-month period in a well-defined geographic region, the Latrobe Valley, Australia. Information was collected on participation in sport and active recreation and associated injuries over the previous 2 weeks for all household members aged over 4 years. Injury rates were calculated per 10,000 population and per 1000 sports participants. Data were collected on 1084 persons from 417 households. Overall, 648 people reported participating in at least one sport or active recreation and 34 (5.2%, 95% CI: 4.8, 5.6%) of these sustained an injury during this activity. Overall, 51.4% of injured cases had a significant impact: 26.5% sought treatment, 34.4% had their activities of daily living adversely affected and 36.0% had their performance/participation limited. Cricket (51 injuries/10,000 population), horse riding (29/10,000 population) and basketball (25/10,000 population) had the highest injury rates. After adjusting for participation, cricket (242 injuries/1000 participants), horse riding (122/1000 participants) and soccer (107/1000 participants) had the highest injury rates. Cricket and soccer were the sports most associated with ‘significant’ injuries. Injury prevention efforts should be aimed at team ball sports (especially cricket, soccer and netball) because of their comparatively high rate of both overall and ‘significant’ injury.     

Acute spine injuries in skiers and snowboarders

Skiing and snowboarding are popular winter sports associated with significant traumatic spinal injuries. Despite a decline in most injuries related to these sports over the years, acute injury rates of the spine have remained stable and even increased. Vertebral fractures and spinal cord injuries are the most common serious acute injuries of the spine in skiers and snowboarders. Due to the unique characteristics of each sport, different injury mechanisms are responsible for the majority of injuries. This article reviews injury patterns, injury types, mechanisms of injury, and strategies for prevention of spine injuries in skiers and snowboarders.     

Overuse Injury in the Young Athlete: Reasons for Concern

In brief: More children are becoming intensely involved in competitive sports programs at younger ages. These children must cope with the psychological stress of competing as well as the physical stress of training during growth periods. A survey of the literature available on overuse injuries in children's sports showed few long-term studies on causes and prevention but isolated several factors that contribute to injury. Guidelines for people who direct youth sports programs emphasize adjustment of training to the child's physical and social development.     

A review of epidemiology of paediatric elbow injuries in sports

The elbow is a common site of orthopaedic injury in the paediatric population. The number of these injuries continues to rise following increased levels of participation in paediatric recreational and competitive sport. Injuries to the paediatric elbow can be classified as either overuse or acute. Delineating injury patterns to the elbow in children can be challenging, given the cartilaginous composition of the distal humerus and the multiple secondary ossification centres that appear and unite with the epiphysis at defined ages. Pitching in baseball, serving in tennis, spiking in volleyball, passing in American football and launching in javelin-throwing can all produce elbow pathology by forceful valgus stress, with medial stretching, lateral compression and posterior impingement. In children and adolescents, the epiphyseal plate is weaker than the surrounding ligaments, predisposing them to epiphyseal plate injuries. On the other hand, post-pubescent or skeletally mature athletes are more prone to tendinous or ligamentous injury. Injuries may cause significant impact on the athlete, parents and healthcare system. With the exception of baseball, there are few prospective cohort studies on the epidemiological trends of childhood elbow injuries in other sports. This paper aims to describe the epidemiological trends in paediatric elbow injuries related to sports, suggests prevention strategies and discusses the scope for further research. A web-based search of existing articles pertaining to paediatric elbow injuries in sports was performed. The implications of acute and overuse injuries and the possibility of permanent damage should be understood by parents, coaches and the athletes. Proper understanding of the intrinsic and extrinsic risk factors that could lead to elbow injuries is thus required. Measures to prevent elbow injuries should include proper coaching, warm-up, officiation, legislation, medical expertise and protective gear. There are still many opportunities for prospective studies and other research projects among young athletes in various sports. Current studies will serve as a baseline for future research to assess the success of specific interventions in reducing the incidence of elbow injury in the paediatric athlete. Further epidemiological studies in various sports will help expand our knowledge and prevent potential disability and deformity in the paediatric elbow.