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 Considers Several Topics During Fall Meeting for 2023-24 Work
By
Geoff Kimmerly
MHSAA.com senior editor
December 7, 2023
The Representative Council of the Michigan High School Athletic Association began examining several topics during its Fall Meeting, Dec. 1 in East Lansing – including start and end dates of the winter calendar, possible new transfer rule exceptions and emerging sports – that will shape its work during the winter and spring meetings of this 2023-24 school year.
Generally, the Council takes only a few actions during its Fall Meeting, with topics often introduced for additional consideration and action during its meetings in March and May. The Council did take three actions this time as part of larger conversations expected to continue over the next six months.
The Council joined staff discussion on the start and end dates of winter seasons and the possibility of moving up both, which was among topics surveyed as part of the Update Meeting poll completed by administrators during the MHSAA’s annual presentations across the state this fall. Staff will prepare a recommendation for Council to review at a future meeting regarding the 2025-26 school year and beyond.
MHSAA staff also provided a variety of transfer rule issues encountered over the last year, and Council discussed the possibility of adding transfer rule exceptions related to military transfer families, fulltime school employee transfers and students returning from a sports academy or prep school and seeking immediate eligibility. The Council did adopt a change for multi-high school districts (with at least three high schools) that include both boundary and non-boundary schools that more clearly defined where students at those schools have immediate eligibility.
The Council also discussed possible new and emerging sports, including proposals for MHSAA sponsorship received by the water polo and field hockey governing bodies and an anticipated proposal to add boys volleyball to the MHSAA Tournament lineup.
Several more conversations regarded MHSAA postseasons:
- The Council reviewed the work of the Football Task Force and considered a staff recommendation to have the Football Committee in January discuss possibly capping enrollment of Division 8 11-player schools at 250 students to incentivize schools within that group to play 11-player instead of switching to 8-player.
- MHSAA staff have identified four areas requiring financial increases – MHSAA Tournament officials fees, host schools compensations, manager honorariums and team reimbursements for Finals participants – and the Council discussed the importance of including these when the MHSAA Audit & Finance Committee meets in February to begin the 2024-25 budgetary process.
- The Council also discussed recommendations from the MHSAA Sports Medicine Advisory Committee addressing possible requirements of emergency action plans and AEDs at MHSAA Tournament sites.
The Fall Meeting saw the appointment of Wyoming Godfrey-Lee Schools superintendent Arnetta Thompson and Freeland Middle School principal Jennifer Thunberg to two-year terms to the 19-person Council, the first terms for both. The Council also reelected Scott Grimes, superintendent for Grand Haven Area Public Schools, as its president; Brighton High School athletic director John Thompson as its vice president, and Vic Michaels, director of physical education and athletics for the Archdiocese of Detroit, as secretary-treasurer.
The Representative Council is the legislative body of the MHSAA. All but five members 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.