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: Fall 2019
December 16, 2019
By Geoff Kimmerly
Second Half editor
The adoption of an enhanced strength-of-schedule formula to determine 8-Player Football Playoff qualifiers beginning with the 2020 season was the most notable action taken by the Representative Council of the Michigan High School Athletic Association during its Fall Meeting on Dec. 6 in East Lansing.
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 winter and spring. This Fall Meeting saw the Council take only two actions, while the majority of discussion centered on topics expected to receive more specific consideration at MHSAA sport committee meetings this winter.
The decision to alter the playoff selection process for 8-player football makes playoff selection consistent across both formats of the sport; 11-player football will begin using the enhanced strength-of-schedule formula as well in 2020, per Council approval at its Spring Meeting this past May. The new playoff selection formula places greater weight on the success of a team’s opponents and sets playoff divisions during the school classification process in March, instead of after the conclusion of the regular season as done previously in both 11 and 8-player football. Also similarly, teams will not be allowed to opt-up into a larger division in either format. The one difference for 8-player is that points assigned for defeating an opponent will be the same for teams in both divisions; in 11-player, more points are awarded on an escalating scale for defeating teams in larger-school divisions.
The Council also approved the permanent use of a policy for non-traditional draws in basketball and volleyball that has guided the scheduling of postseason play for those sports during the 2018-19 and 2019-20 school years. Non-traditional draws allow games to be played at a school’s home or closer neutral site instead of all teams at the same site to alleviate travel distance and time for teams facing long trips during the District and Regional rounds. The policy approved for continuation allows for non-traditional draws to be used for Districts made up of all Upper Peninsula teams, a combination of Upper and Lower Peninsula teams or Districts made up of seven or eight teams from any location; and for geographically-neutral sites to be selected for Regionals that include more than one District located entirely in the Upper Peninsula. For the two District scenarios including Upper Peninsula teams, a traditional draw still may be conducted if all participating teams agree to it.
A number of remaining discussions focused on results from this fall’s Update Meeting survey completed by administrators during the MHSAA’s annual presentations across the state. The Council at its Spring Meeting requested study by staff on a variety of topics – most notably amateur status, out-of-season coaching issues, use of football equipment in out-of-season activities and the MHSAA travel limitation both during the summer and in-season. A number of Update survey questions addressed those subjects, and conversations on those topics will continue at the separate sport committee meetings over the next few months in advance of further Council discussion in March and May.
The Council discussed efforts to promote and grow football, and staff reported on the upcoming Youth Football Summit to be held Jan. 19, 2020, at the MHSAA in partnership with USA Football and the Michigan High School Football Coaches Association. Those efforts, along with the history of use of football equipment out-of-season, are scheduled for further conversation at the MHSAA Football Committee meeting in January.
Additionally, MHSAA staff reported on current mental health initiatives – including the Association’s rules meeting partnership with the Mental Health Foundation of West Michigan and its “be nice.” education program – and on the first meeting of the Sports Medicine Advisory Council. Staff relayed feedback received this fall during the first season under the new sport-specific transfer rule, and also observations from the first-time use of limited District seeding in boys soccer during the recently-completed season. An update also was presented on officials registration and retention.
The Fall Meeting saw the addition of William McCoy, athletic director of Romulus Summit Academy North, to the 19-person Council. He was appointed to a two-year term. McCoy fills the position formerly held by Courtney Hawkins, athletic director of Flint Beecher High School, whose term ended. Also, Kris Isom, athletic director at Adrian Madison High School, was appointed to a two-year term. She replaces Justin Jennings, who previously served as superintendent for Muskegon Public Schools and vacated his Council appointment after leaving Muskegon for a position in Ohio this summer.
The Council reelected Scott Grimes, assistant superintendent of human services for Grand Haven Area Public Schools, as its president; and Vic Michaels, director of physical education and athletics for the Archdiocese of Detroit, as secretary-treasurer. Clare Middle School principal Steve Newkirk was elected Council vice president.
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.