Study: Single-Sport Athletes Injured More
November 3, 2016
A study conducted by the University of Wisconsin School of Medicine and Public Health and funded by the National Federation of State High School Associations (NFHS) Foundation revealed that high school athletes who specialize in a single sport sustain lower-extremity injuries at significantly higher rates than athletes who do not specialize in one sport.
The study was conducted throughout the 2015-16 school year at 29 high schools in Wisconsin involving more than 1,500 student-athletes equally divided between male and female participants. The schools involved in the study represented a mixture of rural (14), suburban (12) and urban (3) areas, and enrollments were equally diverse with 10 small schools (less than 500 students), 10 medium schools (501-1,000 students) and nine large schools (more than 1,000 students).
Athletes who specialized in one sport were twice as likely to report previously sustaining a lower-extremity injury while participating in sports (46%) than athletes who did not specialize (24%). In addition, specialized athletes sustained 60 percent more new lower-extremity injuries during the study than athletes who did not specialize. Lower-extremity injuries were defined as any acute, gradual, recurrent or repetitive-use injury to the lower musculoskeletal system.
“While we have long believed that sport specialization by high school athletes leads to an increased risk of overuse injury, this study confirms those beliefs about the potential risks of sport specialization,” said Bob Gardner, NFHS executive director. “Coaches, parents and student-athletes need to be aware of the injury risks involved with an overemphasis in a single sport.”
Among those who reported previously sustaining a lower-extremity injury, the areas of the body injured most often were the ankle (43%) and knee (23%). The most common types of previous injuries were ligament sprains (51%) and muscle/tendon strains (20%).
New injuries during the year-long study occurred most often to the ankle (34%), knee (25%) and upper leg (13%), with the most common injuries being ligament sprains (41%), muscle/tendon strains (25%) and tendonitis (20%).
In addition, specialized athletes were twice as likely to sustain a gradual onset/repetitive-use injury than athletes who did not specialize, and those who specialized were more likely to sustain an injury even when controlling for gender, grade, previous injury status and sport.
Thirty-four (34) percent of the student-athletes involved in the Wisconsin study specialized in one sport, with females (41%) more likely to specialize than males (28%). Soccer had the highest level of specialization for both males (45%) and females (49%). After soccer, the rate of specialization for females was highest for softball (45%), volleyball (43%) and basketball (37%). The top specialization sports for males after soccer were basketball (37%), tennis (33%) and wrestling (29%).
The study, which was directed by Timothy McGuine, Ph.D., ATC, of the University of Wisconsin, also documented the effects of concurrent sport participation (participating in an interscholastic sport while simultaneously participating in an out-of-school club sport), which indicated further risk of athletes sustaining lower-extremity injuries.
Almost 50 percent of the student-athletes involved in the survey indicated they participated on a club team outside the school setting, and 15 percent of those individuals did so while simultaneously competing in a different sport within the school. Seventeen (17) percent of the student-athletes indicated that they took part in 60 or more primary sport competitions (school and club) in a single year. Among those student-athletes in this group who sustained new lower-extremity injuries during the year, 27 percent were athletes who specialized in one sport.
The student-athletes involved in the study were deemed “specialized” if they answered “yes” to at least four of the following six questions: 1) Do you train more than 75 percent of the time in your primary sport?; 2) Do you train to improve skill and miss time with friends as a result?; 3) Have you quit another sport to focus on one sport?; 4) Do you consider your primary sport more important than your other sports?; 5) Do you regularly travel out of state for your primary sport?; 6) Do you train more than eight months a year in your primary sport?
Although some sports (field hockey, lacrosse) are not offered in Wisconsin and were not included in the study, the study concluded that since specialization increased the risk of lower-extremity injuries in sports involved in the survey it would also likely increase the risk of injuries in sports that were not a part of the study.
Rep Council Wrap-Up: Spring 2021
By
Geoff Kimmerly
MHSAA.com senior editor
May 6, 2021
The addition of a girls division to the Individual Wrestling Tournament series and approval of a common start date for all Fall sports highlighted actions taken by the Representative Council of the Michigan High School Athletic Association during its annual Spring Meeting on May 3.
The Spring Meeting of the 19-member legislative body of the Association’s more than 1,500 member schools is generally the busiest of its sessions each year. The Council considered 19 committee proposals and dealt with a variety of eligibility rule, postseason tournament and operational issues.
Beginning with the 2021-22 school year, a championship division for female competitors who participate on MHSAA member school teams will be added to the Individual Wrestling Tournament series. There will be 14 champions awarded, based on weight classes established by the National Federation of State High School Associations. Qualifiers will be determined via a sectional format, and girls will continue to compete on boys teams during regular-season and team tournament competition; girls also may choose to compete in the boys individual tournament instead of the girls bracket. A total of 401 girls competed in wrestling for MHSAA member schools during the 2019-20 school year, up from 250 in 2017-18 and then 327 in 2018-19. The girls division proposal had been put forth by the MHSAA Wrestling Committee.
The Council also voted to move the start of all Fall sports practices to the same day. Those sports now may begin on the 16th Monday before Thanksgiving. Previously, football started on a Monday and all other sports began Wednesday. For the upcoming school year, the Fall sports start date is Aug. 9, 2021.
As it has during most meetings over the 2020-21 school year, the Council continued to discuss possible adjustments because of the COVID-19 pandemic and disruption it has caused to Michigan high school athletics. Notably, the Council approved an extension of the waiver of the previous academic record regulation for sports played in Fall 2021. This is the third extension of the waiver. The previous academic record regulation requires participants to have received credit for at least 66 percent of a full credit load during the previous semester. As COVID-19 has resulted in various academic scheduling adjustments, schools will continue to determine if athletes have met the credit level necessary to be eligible for athletics this fall.
The Council also made permanent the allowance for cooperative programs in nine sports among schools of the same public school district regardless of the 3,500-student enrollment maximum. Those co-op programs were first allowed as part of a two-year experiment beginning with the 2016-17 school year to increase possibilities for participation in those sports – baseball, bowling, girls competitive cheer, cross country, golf, soccer, softball, tennis and wrestling. Schools taking part in these co-op programs must continue to show a demonstrated history of inadequate numbers of participants and apply for renewal every two years.
Here is a summary of other notable actions taken by the Representative Council at the Spring Meeting, which will take effect during the 2021-22 school year:
Athletic Equity
• The Council approved an Athletic Equity Committee recommendation to publish the following statement to suggest to local schools that they review nicknames and school logos that are considered offensive or hurtful to minority groups or demonstrate an insensitive bias:
“The MHSAA recognizes the importance of equity in high school sports. Schools and mascots are rich in tradition and unique to each community. Although we understand the tradition of those individual communities, we also wish to support and foster an environment of inclusion. It is in this spirit that the MHSAA encourages member schools and communities to evaluate and reconsider names and mascots that may be offensive to groups of individuals.”
Officials
• The Council approved an Officials Review Committee recommendation to adjust the officials rating system with the hope of encouraging more ratings and providing a more specific understanding of an official’s overall body of work. Instead of the current overall 1-5 rating system, officials will receive specific feedback in four categories: judgment, presence and demeanor, attitude and effort, and administration and communication.
Sport Matters
• In bowling, the Council approved a Bowling Committee recommendation to adopt the Phantom oil pattern for the 2021-22 season.
• In competitive cheer, the Council approved a Girls Competitive Cheer Committee recommendation to study a new choreography chart that will award points based on a variety of skills while also awarding a range of points to benefit both small and large teams which have various skill levels.
• Also in cheer, the Council approved a pair of Committee technical recommendations; the first allows for a connected tumbling skill to be considered a new variety point for Round 3, and the second allows four difficulty points for a one-leg flair at the elevator level for middle school competition.
• In golf, the Council approved the Golf Committee recommendation to require the use of the iWanamaker scoring program and app during the regular season, beginning in Fall 2021. The program and app became required during Regional and Finals play during the Fall 2020 season.
• In softball, the Council approved a Girls Softball Committee recommendation to add a suspended game policy to MHSAA playing rule adoptions in the MHSAA Handbook. This policy – which mirrors that approved for baseball in 2020 – provides a game will be suspended any time it is called before it reaches regulation, or if called any time when the score is tied.
• In tennis, the Council approved a Tennis Committee recommendation regarding instances when a seeded player withdraws from Regional or Finals competition before the first match is played. In those instances, the players seeded lower in that flight than the player who withdrew will move up one seed and be placed on the previously-determined lines for those seeds within the flight bracket. However, non-seeded players already drawn into the bracket will not be moved.
• Also in wrestling, the Council approved a late-arrival skin check on days – especially during weekends – when teams may be competing in multiple regular-season duals. An athlete who misses the scheduled morning skin check may, with coach’s notification to the official beforehand, receive a skin check upon later arrival to the event but prior to the start of the dual in which the wrestler may compete. This will allow an individual the opportunity to participate if that wrestler missed the scheduled morning inspection due to educational reasons or unforeseen circumstances.
The Council also discussed possible topics for presentation during this fall’s Update Meeting statewide tour, and took action to clarify Handbook language regarding a variety of topics. The Association’s $11.5 million budget for the 2021-22 school year also was approved.
The Representative Council is the 19-member legislative body of the MHSAA. All but five are elected by member schools. Four members are appointed by the Council to facilitate representation of females and minorities, and the 19th position is occupied by the Superintendent of Public Instruction or designee.
The MHSAA is a private, not-for-profit corporation of voluntary membership by more than 1,500 public and private senior high schools and junior high/middle schools which exists to develop common rules for athletic eligibility and competition. No government funds or tax dollars support the MHSAA, which was the first such association nationally to not accept membership dues or tournament entry fees from schools. Member schools which enforce these rules are permitted to participate in MHSAA tournaments, which attract more than 1.4 million spectators each year.