Chat with us, powered by LiveChat While many believe that early specialization will allow an athlete to excel, most evidence shows that early sports specialization does not lead to success. A study that looked at Olympi | Wridemy

While many believe that early specialization will allow an athlete to excel, most evidence shows that early sports specialization does not lead to success. A study that looked at Olympi

While many believe that early specialization will allow an athlete to excel, most evidence shows that early sports specialization does not lead to success. A study that looked at Olympi

While many believe that early specialization will allow an athlete to excel, most evidence shows that early sports specialization does not lead to success. A study that looked at Olympic German athletes in various sports found that most of those who found international-level success in their primary sport also participated in 2 other sports (Myer et al., 2016). For example, Ford & Williams (2017) state that early specialization can be linked to many negative consequences, such as overuse injuries, burnout, dropout, overtraining and decreased social development. Injury and dropout are problematic because they may lead to a sedentary lifestyle as a youth and can have long-term consequences in adulthood (Meyer et al., 2015). A study of baseball pitchers showed that those who pitched for eight months or continued to pitch with pain had a greater risk of needing elbow surgery (Meyer et al., 2015). Another study showed that those who did not take at least one season off were more likely to sustain an injury regardless of whether they did multisport (Meyer et al., 2015). Another study on high school athletes showed that those who trained for more than 16 hours per week had an increased risk of overuse injury (Brenner, 2016).

On the other hand, contradictory information by Ford & Williams (2017) mentions that the more time an individual spends practicing an activity directly relates to the level of performance they achieve. However, this seemed to be linked to a few sports, such as gymnastics and figure skating, which increased the odds of excelling at the elite level (Meyer et al. 2016). A study by Ford & Williams (2017) showed that a female rhythmic gymnast began training at a young age and, by age twelve, spent all her leisure time training because gymnasts are required to perform at an expert level by mid-adolescence.

 Participating in sports can provide many benefits, such as lifelong physical activity skills, socializing with peers, building teamwork and leadership skills, improved self-esteem, and having fun (Brenner, 2016). Those who delay specialization in a single sport will have higher athletic success (Brenner, 2016).

References

Brenner, J. S. (2016). Sports Specialization and Intensive Training in Young Athletes. Pediatrics138(3). https://doi.org/10.1542/peds.2016-2148

Ford, P. R., & Williams, A. M. (2017). Sport activity in childhood: Early specialization and diversification. Routledge handbook of talent identification and development in sport, 116-132.

Myer, G. D., Jayanthi, N., Difiori, J. P., Faigenbaum, A. D., Kiefer, A. W., Logerstedt, D., & Micheli, L. J. (2015). Sport specialization, part I: does early sports specialization increase negative outcomes and reduce the opportunity for success in young athletes?. Sports health, 7(5), 437-442.

Myer, G. D., Jayanthi, N., DiFiori, J. P., Faigenbaum, A. D., Kiefer, A. W., Logerstedt, D., & Micheli, L. J. (2016). Sports specialization, part II: alternative solutions to early sport specialization in youth athletes. Sports health, 8(1), 65-73

Instructor’s Feedback Week 3

Depth and Relevance: 4.5 out of 4.5

Reply post responds completely to all facets of another student’s initial post, incorporating different points of view, ideas or concepts related.

Utilization of Course Material and References:

4 out of 4

Reply post integrates course materials (textbook and ancillary article from student’s post).

Word Count: 2 out of 2

Reply post has between 250-350 words. (This word count does not include the actual discussion question being written or the reference list.)

Reply Post:

Hello Carlynn,

I support your idea about having a robust motivational climate to help a task-involving setting. It is essential in enhancing the athlete’s personal health and well-being. A motivational environment supports sports performance and achievement and without a talented athlete is unlikely to attain his full potential. It impacts how athletes respond to sports (Williams & Krane, 2021 Chapter 4). This touches on the athlete’s personal enhancement, sport enjoyment, enhanced competence, and increased levels of moral functioning.

Coaches are an essential aspect of sports as they enhance the players’ experience. Coaches who have undergone effective training offer an enhanced coaching experience among many athletes. Through positive reinforcement and teaching, the coaches improve the player’s satisfaction, compliance, motivation, self-esteem, and attrition levels. In many instances, the coach becomes the model of the behavior despite the athlete spending more time interacting with the family. This shows the need for coaches to undergo training on strength and conditioning principles essential to young athletes (Singh, 2012). The coaches are also critical in peak performances as they act as sports consultants for less skilled and young athletes. Coaches, through various approaches, can help athletes attain mental toughness (Williams & Krane, 2021 Chapter 9). Mental toughness touches on the perception or unshakable belief that the individual can achieve set goals, regardless of the setbacks or challenges. Mental toughness is a psychological resource that is efficient in nature to enact and maintain goal-oriented pursuits.

I support that the argument that task-involving climates have a negative impact by self-handicapping of elite athletes does not add up. Task-involving environments help enhance psychological capabilities that are attained through practice and knowledge. Combined with specific training techniques enhances the athlete's mental state. Increased physical capabilities, conditioning, and strategies increase the athlete's chances of offering peak performance. It is obtained through psychological readiness and an ideal mental climate that enhances performance.

 

References

Singh, R. (2012). Positive and negative impact of sports on youth.  Int. Res. J. Manag. Soc. Hum3, 780-787.

Williams, J. M., & Krane, V. (Eds.). (2021). Applied sports psychology: Personal growth to peak performance (8th ed.). McGraw-Hill Education.

Original Post (responded to):

The framework for having a strong motivational climate which supports a task-involving setting is one value that adds to an athlete’s or person’s health and well being. This concept was a new learning point for me and the breakdown of creating a positive task-involving climate for young and elite athletes correlates with overall performance. Task-involving, which highlights the overall goal of personal improvement, resonates highly with enjoyment of a sport, perceived competence, and higher levels of moral functioning when positive coach-created environments take place. (Williams & Krane, 2021)

A journal done on youth’s mental health in relation to sports participation proved to show a connection between coach’s and overall player experience. When coaches of youth sports adhere to the development of their athlete’s needs, such as positive reinforcement and teaching, the player experience, satisfaction, motivation, and attrition rates all improve. (Singh, 2012) The physical benefits of sports participation in youth are apparent, but psychological benefits ultimately help shape the individual into who they become and how they apply this learning into other aspects of their lives, thus being valuable.

A women’s handball study done in France, provided additional support of the main point surrounding a positive correlation between coaching and task-involving climates. The study went on to hypothesis this positive connection against the negative ego-involving climate a coach could provide. Results concluded players feeling encompassing competence, autonomy, and relatedness through the task-involving climate of the coach. (Sarrazin et al., 2001) This study provided evidence to support the significance behind creating a motivational climate in sports participation, whether youth or elite athletes, in order for self improvement and overall autonomy to occur.

The textbook stated that studies had shown negative impacts of task-involving climates through self-handicapping behavior in elite athletes. The concept behind self-handicapping when performing poorly stemming from a task-involving climate doesn’t seem to add up to me, but rather fall in line with a more ego-involved climate. Not only does this seem to contradict the evidence in the handball study but I struggle to believe that self-handicapping would stem from a climate emphasizing the importance of self-improvement and motivation.  

References:

Sarrazin, P., Guillet, E., & Cury, F. (2001). The effect of Coach's task- and ego-involving climate on the changes in perceived competence, relatedness, and autonomy among girl handballers.  European Journal of Sport Science1(4), 1–9.  https://doi.org/10.1080/17461390100071404Links to an external site.

Singh, R. (2012). Positive and Negative Impact of Sports on Youth.  International Res Jour Managt Socio Human, 3, 780-787.

Williams, J. M., & Krane, V. (2021).  Applied Sport Psychology: Personal Growth To Peak Performance. McGraw-Hill Education. 

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437

SPORTS HEALTHvol. 7 • no. 5

[ Orthopaedic Surgery ]

Early sport specialization appears to be increasing in young athletes,21,23 and the pressure to select 1 sport to the exclusion of others is believed to come from coaches,

parents, and other youth athletes.27 There is concern that engaging in year-round intense training programs in a single sport at an early age may result in negative outcomes for some

young athletes, such as overuse injuries, burnout, and dropping out of sport(s).2,17 This clinical review aims to synthesize the current evidence to outline the potential negative outcomes related to sports specialization in young athletes and to guide alternative strategies that optimize enjoyment and safety of youth sports.29

598747 SPHXXX10.1177/1941738115598747Myer et alSports Health research-article2015

Sport Specialization, Part I: Does Early Sports Specialization Increase Negative Outcomes and Reduce the Opportunity for Success in Young Athletes? Gregory D. Myer, PhD,*†‡§|| Neeru Jayanthi, MD,¶# John P. Difiori, MD,** Avery D. Faigenbaum, EdD,†† Adam W. Kiefer, PhD,†‡# David Logerstedt, PhD,‡‡ and Lyle J. Micheli, MD||§§||||

Context: There is increased growth in sports participation across the globe. Sports specialization patterns, which include year-round training, participation on multiple teams of the same sport, and focused participation in a single sport at a young age, are at high levels. The need for this type of early specialized training in young athletes is currently under debate.

Evidence Acquisition: Nonsystematic review.

Study Design: Clinical review.

Level of Evidence: Level 4.

Conclusion: Sports specialization is defined as year-round training (greater than 8 months per year), choosing a single main sport, and/or quitting all other sports to focus on 1 sport. Specialized training in young athletes has risks of injury and burnout, while the degree of specialization is positively correlated with increased serious overuse injury risk. Risk factors for injury in young athletes who specialize in a single sport include year-round single-sport training, participation in more competition, decreased age-appropriate play, and involvement in individual sports that require the early development of technical skills. Adults involved in instruction of youth sports may also put young athletes at risk for injury by encouraging increased intensity in organized practices and competition rather than self-directed unstructured free play.

Strength-of-Recommendation Taxonomy (SORT): C.

Keywords: injury prevention; youth sports; athletic performance; neuromuscular training

From †Division of Sports Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, ‡Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, Ohio, §The Sports Health and Performance Institute, OSU Sports Medicine, Ohio State University Medical Center, Columbus, Ohio, ||The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, ¶Department of Orthopaedics, Emory University, Atlanta, Georgia, #Department of Family Medicine, Emory University School of Medicine, Atlanta, Georgia, **Division of Sports Medicine and Non-Operative Orthopaedics, Departments of Family Medicine and Orthopaedics, University of California, Los Angeles, California, ††The College of New Jersey, Ewing, New Jersey, ‡‡Department of Physical Therapy, University of the Sciences, Philadelphia, Pennsylvania, §§Boston Children’s Hospital, Department of Orthopaedics, Division of Sports Medicine, Boston, Massachusetts, and ||||Harvard Medical School, Boston, Massachusetts *Address correspondence to Gregory D. Myer, PhD, Cincinnati Children’s Hospital, 3333 Burnet Avenue, MLC 10001, Cincinnati, OH 45229 (email: [email protected]). The following author declared potential conflicts of interest: Neeru Jayanthi, MD, is a paid consultant for American Academy of Pediatrics and the Woman’s Tennis Association Tour. DOI: 10.1177/1941738115598747 © 2015 The Author(s)

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SPORTS SPECIALIZATION RISKS AND ETIOLOGIES Definition and Volume Risk

Sports specialization can be defined as “intensive year-round training in a single sport at the exclusion of other sports.”39 This definition allows for a spectrum of sports specialization where a highly specialized athlete may be able to (1) choose a main sport, (2) participate for greater than 8 months per year in 1 main sport, and (3) quit all other sports to focus on 1 sport.40 Thus, the degree of sports specialization can be defined as low, moderate, or high based on the number of definition components to which a young athlete may respond in a positive way.40 Historically, it has been difficult to separate the known risks of intensive training based on high weekly volumes of training from the independent risks of sports specialization in overuse injuries. More recently, it has been shown that high training volume carries its own risks for injury, and that increased exposure has a linear relationship to adjusted injury risk in high school athletes.38,45,60 Specifically, exceeding 16 hours per week of total sports participation, regardless of the number of sports, seems to carry the greatest risk38,45,60; however, age-adjusted recommendations for volume risk have not been made for many sports. Nearly two-thirds of middle school–aged children receiving medical treatment sustained an injury during sports or physical activity, but the training and rates of specialization were not included.57 Additionally, athletes who participate in more competitive levels or higher volumes of training have an increased incidence of injury.20,48,60 For example, adolescent baseball pitchers are at significant risk (4-36 times) of sustaining an injury due to overuse and fatigue.53 Until recently, these injury risks were not correlated with sports specialization in young athletes.

Independent Risks of Sports Specialization

One study of 1190 young athletes, 7 to 18 years old, compared training patterns of injured athletes at sports medicine clinics versus uninjured athletes during a sports preparticipation exam.40 Those athletes who met the definition of a highly specialized athlete had 2.25 (range, 1.27-3.99) greater odds of having sustained a serious overuse injury than an unspecialized young athlete, even when accounting for hours per week sports exposure and age. In fact, there was a continuum, with the more specialized an athlete (per the 3 criteria proposed earlier) the greater this risk of injury (Table 1). A separate retrospective study of 546 high school athletes found a relationship between the development of patellofemoral pain syndrome and single- sport training in athletes in basketball, soccer, and volleyball.35 Exposures were estimated by seasons rather than by weekly hours of participation. Patellofemoral pain was one of the most common diagnoses in the study of 1190 athletes discussed earlier,40 and this corroborates the findings that sports- specialized training is an independent risk factor for injury in young athletes.

Age-Related Play and Eligibility Rules

Age-adjusted training and competition volumes have not been well studied in many youth sports. Nonetheless, youth sports leagues have instituted rules designed to prevent injury and promote age-appropriate levels of competition.47,54 USA youth baseball has tried to utilize evidence for youth baseball leagues to guide age-adjusted pitch counts.47 Unfortunately, there are data to suggest that these guidelines are not followed by many coaches, with the majority reporting additional pitching instruction or camps.24 In addition, pitch count may be difficult to monitor when pitchers participate on multiple teams over the

Table 1. Degree of sports specialization and risk of all-cause injuriesa

Degree of Specialization Risk of Injury Risk of Serious Overuse Injury Risk of Acute Injury

Low specialization (0 or 1 of the following): Year-round training (>8 months per year) Chooses a single main sport Quit all sports to focus on 1 sport

Low Low Moderate

Moderately specialized (2 of the following): Year-round training (>8 months per year) Chooses a single main sport Quit all sports to focus on 1 sport

Moderate Moderate Low

Highly specialized (3/3 of the following): Year round training (>8 months per year) Chooses a single main sport Quit all sports to focus on 1 sport

High High Low

aReproduced with permission from Jayanthi et al.40

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course of a tournament or season. At present, there is no effective model to develop appropriate age-related recommendations. In response to early burnout and premature retirements in young professional tennis players, the Women’s Tennis Association (WTA) developed an age eligibility rule (AER). At 10-year follow-up, this was effective in increasing career lengths by about 2 years (43%) and reducing premature sports dropout from 7% to 1% in young professional women’s tennis players.54 The key component to this AER was a “phased in” approach to the number of tournaments allowed, beginning no earlier than the age of 14 years, with annual age-related increases until 18 years as well as numerous player development programs. In a separate study, a training rule based on age (age vs hours) recently demonstrated increased risk of injury and serious overuse injury if a young athlete participated in more weekly organized sports hours than their age.40 Potentially, volume recommendations for training and competition should be age or developmentally adjusted across all sports, and these rules may provide a model for other sports.

WHAT MAKES SPORTS SPECIALIZATION A RISK VERSUS DIVERSIFIED SPORTS EXPERIENCE?

The lack of diversified activity may not allow young athletes to develop the appropriate neuromuscular skills that are effective in injury prevention and does not allow for the necessary rest from repetitive use of the same segments in the body. The positive transfer of skill with diversification is important in the successful development of a young athlete.15,28 Until recently, we did not have enough evidence to support the concept of sports specialization as an independent risk factor for injury, apart from exposure or the combination of high volume and intensity; however, the following theories may provide some additional rationale for these risks.

Specialized Athletes Are More Likely to Have Year-Round Exposure to a Single Sport

Year-round exposure to a single sport may be one of the primary reasons for injury risk in specialized athletes. In youth baseball pitchers, there was a greater risk for shoulder and elbow surgery in those that pitched greater than 8 months per year and in those that pitched regularly with arm pain or fatigue.53 Another study of high school athletes found that athletes who did not take at least 1 sport season off during the year (eg, fall, winter, spring, or summer) were more likely to sustain an injury independent of whether the athlete was characterized as a single or multisport athlete.45 However, the lack of difference in risks between the 2 groups may be due to the fact that the weekly exposure hours were not monitored. Thus, it makes it more difficult to draw firm conclusions with regard to the risk of injury when exposure is already reduced. The risk of injury or medical withdrawal was not demonstrated in a population of 519 Midwest junior tennis players when using a similar model.38 This might be due to the very high rates of year-round training (93.4% at >9 months per year) that limited

the ability for a comparison with a control group.38 Regardless, there seems to be emerging data that indicate increased risk of injury with year-round training—a key component of specialized training.

Repetitive Technical Skills and High-Risk Mechanics

Highly specialized athletes who perform at an elite level commonly participate in individual and technical sports. For example, the majority of junior elite tennis players (70%) specialized at a mean age of 10.4 years old, while 95% were specialized by the age of 18 years.38 Other individual, technical sports such as gymnastics, dance, swimming, and diving typically require early specialization and high intense volumes in prepubescent stages. While speculative, historical trends indicate that athletes in team sports appear more likely to diversify their sports, but even this trend has started to change. Certain positions in team sports, such as a baseball pitcher, can be trained as a specialized individual sport athlete. There is a paucity of information on the biomechanical risks of sports for overuse injury in young athletes, but some examples support the potential for injury risk development in certain sports based on mechanics and training. Specific to tennis, the mean age for the introduction of the kick serve (a heavy topspin serve that typically requires significant lumbar hyperextension and extreme abduction and external rotation of the shoulder) to adolescent athletes was approximately 13 years old.42 Associated with this was a relatively high rate of shoulder and elbow injuries.42 Similarly, increased forces to the back and shoulder in elite tennis players, but not in junior players, have been related to the kick serve technique, and the mechanics of this serve may put more stress on the adolescent body and thus increase injury risk.1,61 Baseball pitchers are much more likely to have overuse elbow injuries related to pitching volume, pitching fatigue, and poor mechanics that result in increased elbow torque and forces.25 Likewise, young gymnasts often have wrist pain that is related to the volume of training intensity and skill level, likely related to repetitive impact forces in wrist dorsiflexion during growth periods.18,19

Overscheduling and Competition

The competitive demands are also typically higher for a specialized athlete given the pressure for successful performance during games, matches, meets, or tournaments. In most sports, risk of injury is expected to be higher during competition compared with training.36 These data have been consistently demonstrated in a variety of National Collegiate Athletic Association (NCAA) sports. There are a few sports such as gymnastics and figure skating where the intense and voluminous (7 days a week) specialized technical training may far exceed the exposure of a short competitive program in a meet. Also, the level of specialized participation may involve higher level competition (particularly at younger ages), which again may be a risk factor for injury. Scheduled intense competitions that can last 6 hours or longer without adequate

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rest and recovery have been implicated as a risk factor for potential injury as well.13,38 Suggested minimal rest periods between repeated bouts of same-day competition have been proposed,11,38 as well as limiting training 48 hours prior to competition to help reduce injury risk.46 However, more research is needed to understand the risk factors associated with overscheduling competition and to establish formal guidelines to optimize youth sport performance.

Psychological Burnout

There are increased pressures in intense, adult-driven specialized training and competitions. The psychological risk of burnout, depression, and increased risk of injury may be a reason for withdrawal from sport in young athletes who took part in early specialized training. Talent development research on young athletes demonstrates that professionalized, adult-style practices are likely not optimal for fostering talent development.16 Specifically, research has indicated that adolescents need to enjoy the activities of their domain, and that intrinsic motivators are key to maintaining participation and goal achievement.16 Unfortunately, this is often not the case as the temptation of collegiate scholarships and stardom causes thousands of adolescent athletes to specialize in single sports and, subsequently, train year-round in sport-specific skills. While this has resulted in more highly skilled, sport-mature athletes at a younger age, it is isolating the child and has the potential to lead to increased stress and pressure and an overall feeling that the child lacks control or decision-making power over their lives.68 It is important to understand the implications of sport specialization at all levels of competition to better manage athletes in a way that is in their best interest to prevent burnout. In one such study on burnout, earlier specialization in swimming resulted in less time on the national team and earlier retirement compared with later specialization.10 There is also a valid concern of sports attrition related to early, specialized intense training. In ice hockey, players more prone to dropout began off-ice training at a younger age, while they also invested a larger number of hours in off-ice training at a younger age compared with those who continued participation.66 Other studies in sports such as swimming and tennis suggest that retirement from sport may be the consequence of burnout, which young athletes may experience with continued intense and specialized participation.33,66

Burnout likely results from a combination of physical and psychological factors. For example, a study of junior tennis players indicated that the burned-out players had less input into training and sport-related decisions and practiced fewer days with decreased motivation compared with the players who did not exhibit similar levels of burnout.31-33 This resulted in athletes who were more withdrawn and less psychologically prepared to cope with the high stress realities of their sport.31-33 Moreover, while a lack of fun is a more frequent reason for withdrawal from sport at earlier ages, performance pressure seems to become more central to withdrawal as athletes get older.14,30 Positive peer relationships also increase enjoyment and sport

commitment in youth. However, if there was a point that the child felt that the sport conflicted with outside social development, both their commitment to and motivation for that sport decreased.56 Similarly, sport participation of a child’s best friend was a strong predictor of adolescent sport commitment and involvement3,67; however, playing at a higher performance level outside of the child’s age-specific peer group was linked to burnout in elite youth athletes.32,33 The potential interaction between burnout, overtraining, and risk of injury has been suggested as well.13 Young specialized athletes may be at risk for either, and the specialization may magnify these potential injury risk factors, which can create a cycle of recurrent injury. Based on the current evidence, it may be best to limit intense specialized training to less than 16 hours per week, and instructors should employ strategies to prevent overscheduling (eg, scheduled rest periods) and should monitor signs of burnout or fear of reinjury. Improved communication between those in management of youth sports participation (coaches and parents) can help limit the potential risks of specialized athletes.

Primary Injury and Effects of Fear of Reinjury

While many athletes will recover after an injury,59 injuries that occur during sports or physical activity may deter some athletes from further participation. One year or more after an injury or surgery, approximately 65% of athletes returned to their previous level of sporting activities, despite functional recovery from the injury.7,8,26,49 Twenty percent of elite athletes have reported injury as a reason for quitting their sport,14 and up to 8% of adolescents drop out of sporting activities due to injury or fear of injury.34 Many athletes within 12 months of an injury report lower levels of physical and mental health,5 with a significant reduction in their physical activity.4 This reduction in physical activity can have negative health consequences,9,22,63 and insufficient physical activity is one of the top 5 reasons for global deaths from noncommunicable diseases.50 This pattern of physical inactivity can persist into adolescence and adulthood.12,37,51,52

Psychological readiness to return to sport after an injury does not always correspond with physical readiness.58 Fear of reinjury is a frequently cited reason athletes do not return to sport or reduce their level of physical activity.6,41,43,44,62 Fear of injury is associated with pain-related anxiety and self-reported and behavioral impairments in patients with chronic low back pain.65 Higher levels of pain and pain catastrophizing after injury to the shoulder is associated with fear of reinjury/ movement.55 A large meta-analysis found a strong, positive association with pain-related fear and disability.69 The cumulative effects of fear of reinjury in the specialized sport, with the lack of diversified exposure to a variety of sports, may limit a child from successfully reintegrating into any form of sporting activity.

Young specialized athletes who exhibit characteristics of fear of reinjury may need strategies and techniques to adequately address these issues if they aim to return directly back to the same sport in which they were injured. In addition, some

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specialized athletes may have low personal coping skills to deal with psychological aspects of the injury.64 Educating the athlete and identifying inaccurate information about the injury and rehabilitation process may reduce the emotional stress associated with the injury. This may include adequately counseling the athlete about the recovery process and the challenges of rehabilitation. Effective strategies to help young athletes combat fear of reinjury may enhance their ability to successfully return to sports and continue life-long activity participation.

CONCLUSION

The emerging evidence indicates that intense, year-round training specialized to a single sport can be a risk factor for various issues, and parents and coaches need to be cautious about encouraging early sport specialization in youth. Three components that define early sports specialization include

year-round training (>8 months per year), choosing a single main sport, and quitting all other sports to focus on 1 sport. Increased degree of specialization is positively correlated with increased serious overuse injury risk. Some of the current literature regarding the relationship between sport specialization and injury (ie, association does not equal causation) could simply be a marker for excessive training volume in youth. The volume of training defined by hours per week of organized sports can increase injury risk either by exceeding 16 hours per week of organized sports or hours per week of organized sports greater than the athlete’s age. Specialized young athletes may be at increased

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