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: Winter 2018
March 28, 2018
By Geoff Kimmerly
Second Half editor
With a number of important topics filling the agenda for its Spring Meeting this May, the Representative Council of the Michigan High School Athletic Association prepared for a number of possible votes by receiving and requesting additional information during its annual Winter Meeting on March 23 in East Lansing.
The Winter Meeting frequently serves as an opportunity for the Council to discuss items expected to come up for action at its final meeting of the school year, scheduled for May 6-7. Since June of 2017, the MHSAA has been pushing several projects forward – with work on the transfer rule and junior high/middle school sports receiving the most emphasis.
Addressing the chronically troubling nature of transfers in school sports, the MHSAA has facilitated nine months of discussions with leagues and administrative groups across the state to develop a proposal that would make the transfer rule sport-specific – that is, a rule that bases current eligibility on the sports an athlete has participated in in the past. The proposed new rule would make transferring students ineligible at a new school in the sports they played the previous year at their old school. However, transfer students would be immediately eligible in any sport they didn’t participate in the previous school year. A list of exceptions, including a change of residence, would still allow for transferring students to become eligible in all sports.
The Council discussed how support for this potential transfer rule change has grown, and suggested the MHSAA send further explanation of the proposal to school superintendents and principals before the meeting in May.
“Since last summer, there has been membership-wide discussion of proposals that pursue the elusive goal of adopting a transfer rule that is simpler and easier to understand and, therefore, more consistently enforced,” MHSAA Executive Director John E. “Jack” Roberts said. “There appears to be broad consensus that we are on the right path.
“If adopted by the Council in May, the full effect of the changes would not be felt until the 2019-20 school year. What sports are actually played by a student during 2018-19 would determine that student’s eligibility after a transfer for 2019-20.”
The Council also is continuing work on a number of efforts related to the MHSAA’s growing presence at the junior high and middle school level. Under consideration is a proposal increasing the number of contests permitted within the maximum 13-week seasons for several sports, and another proposal relaxing or eliminating the Limited Team Membership regulation for most sports at that level. The Council also is considering expanding the MHSAA’s role as a presenting sponsor at events involving junior high/middle school students.
MHSAA membership at the junior high/middle school level has increased by more than 100 schools – nearly 14 percent – and nearly 70 percent of 800 member junior high/middle schools have begun accommodating 6th-graders in their programs since the MHSAA’s Constitution was amended in 2015 to allow 6th-graders to be included.
“The emphasis on policies and programs related to 6th-, 7th- and 8th-graders is essential if sports at the high school level will remain relevant to students and useful to schools which are trying to engage youth in 21st-century learning,” Roberts said. “We’ve also put many policies under a microscope to see if they can be modified to respond to our customers’ desires for more competition at the 6th- through 8th-grade levels while remaining faithful to our mission of providing these younger student-athletes the opportunity to sample sports and develop new interests and skills.”
A number of other topics were discussed during the Winter Meeting in advance of actions that could take place in May or at the Council’s Fall Meeting in December:
• The Council is considering two leading options for setting the girls and boys basketball regular-season and MHSAA tournament schedules after the 2018-19 season. For 2018-19, for the first time, the boys and girls seasons will flip start and end dates, with the boys starting and ending their season first. This will be done to adjust to the availability of Michigan State University’s Breslin Center to host the boys Semifinals and Finals. For 2018-19, no other arena available is large enough to accommodate the crowd that traditionally attends the final games of the boys postseason.
One option for 2019-20 and possibly beyond includes continuing the current strategy of using multiple sites for Semifinals and Finals weekends while accommodating Breslin (or another largest arena’s) availability – for example, this year’s Boys Semifinals and Finals were played at Breslin, while the Girls Semifinals and Finals were played at Calvin College’s Van Noord Arena because Breslin was not available for the girls weekend. (Breslin and Van Noord will be used for the 2019 Semifinals and Finals weekends as well, again to accommodate Breslin’s availability.) The second option would put the girls and boys tournament schedules over the same three-week period and use the largest available arena to host games on only two days; Semifinals would be played at various sites for both genders, with all four girls and boys championship games played at the largest arena during one weekend.
• Also in girls and boys basketball, the Council will consider possibilities for seeding the top two teams in geographically-determined Districts. MHSAA staff have created plans for possible implementation as requested by the Council at its May 2017 meeting.
• In football, the Council is considering options to assist 8-player football schools with their regular-season scheduling.
“While transfers and junior high/middle school programs are fundamentally more important than single sport issues, we have an eye on several that will generate significant interest,” Roberts said. “Schools which sponsor 8-player football will be receiving plans to assist their scheduling of regular-season games, and they will be asked to provide reactions through an online survey during April.
“Basketball continues to have two issues which have more public interest than genuine importance. One – the boys and girls tournament schedule and championship venue after 2019 – is moving toward a vote in December. The other – limited seeding of boys and girls District tournaments – is scheduled for action in May.”
The Council also talked about ways of involving more junior high/middle school students and at more grade levels, and what possible new high school sports might draw students with a wider variety of interests and abilities. There also was discussion on how eligibility and transfer rules are applied to boarding school students and what modifications would promote competitive equity between boarding schools and both public and nonpublic schools.
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.