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 Approves Expanded Basketball Schedules, Classification Changes at Winter Meeting
By
Geoff Kimmerly
MHSAA.com senior editor
March 29, 2022
An increase in the number of regular-season games high school basketball teams are allowed to play may be the most visible action taken by the Representative Council of the Michigan High School Athletic Association during its annual Winter Meeting on March 25 in East Lansing. However, a change in classification procedure expected to bring more equity to tournament groupings should have the most far-reaching effects across all sports.
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 1-2. However, the Council took a number of actions at this meeting as they relate to scheduling currently underway for the 2022-23 school year, or Spring tournaments this May.
The Council approved a Basketball Committee proposal that will allow, beginning with the 2022-23 season, high school basketball teams to play up to 22 regular-season games at every level (varsity, junior varsity and freshman). Teams previously played a maximum of 20 games during the regular season; this adjustment brings MHSAA school schedules in line with what is allowed in most other Midwest states. Additionally as part of that proposal, mandatory preseason practice was reduced by one week, allowing teams to begin playing games after 14 days instead of 21.
The Council also approved a proposal by the Classification Committee that will result in postseason divisions more reflective of the number of schools actively sponsoring teams for that season. Divisions are assigned by taking the number of teams playing a sport and dividing equally by the number of team championships awarded in that sport (for example, four in baseball and softball). Previously, by the time seasons started the smallest-school divisions in many sports ended up with fewer teams than larger-school divisions because several small schools would declare they would be sponsoring a team during the classification process in March but then be unable to do so because of lack of participation or other reasons.
With this change, schools that have indicated they will sponsor a sport but haven’t participated in that sport as a team or with individual qualifiers over the previous two years will be removed from the classification process before divisions are determined. Those schools that have been removed must then notify the MHSAA they have an active team before being added back into the tournament.
A number of other actions will affect competition as quickly as this spring’s MHSAA Tournaments, and into the 2022-23 school year.
The Council approved a Cross Country/Track & Field proposal to allow for more MHSAA Tournament opportunities for wheelchair athletes. Starting with this Spring 2022 season, Regional and Final meets will include four events for wheelchair participants – 100, 200 and 400-meter races and shot put. These events will be open to wheelchair track & field athletes at MHSAA member schools. Additionally, the Council approved the expansion of postseason Paralympic opportunities in swimming, adding a 100-yard freestyle heat to the 50-yard freestyle heat that has been offered at Finals since 2020.
In baseball and softball, the Council approved committee proposals in those sports to allow District first-round games to be played during the week before Memorial Day. Baseball may play first-round games that previous Thursday, Friday or Saturday, and softball may play that previous Thursday and Friday, beginning this upcoming season. Previously, all first-round games were played the Tuesday after Memorial Day. This change is expected to alleviate pitch count concerns in baseball and provide scheduling flexibility for later District rounds that could allow athletes – especially at small schools where baseball and softball players frequently participate in track & field – opportunities to compete in both sports during the week following Memorial Day.
Another change proposed by the Classification Committee and approved by the Council will raise the enrollment cap for cooperative hockey programs, potentially allowing for more opportunities for schools to contribute athletes who wish to play the sport. Nearly 50 percent of hockey teams playing in the MHSAA Tournament are cooperatives made up of students from multiple schools, and for hockey those schools’ enrollments now may total up to 5,500 students, an increase of 2,000 students for hockey only. Schools participating in a cooperative hockey program must continue to receive Executive Committee approval and show a demonstrated lack of participation in hockey.
The Council also approved a Classification Committee proposal that will allow football teams to opt up in division after the annual release of classifications for the upcoming season in late March/early April. Football teams may opt up one division, with Executive Committee approval, and must show reason and rationale for their request. All football opt ups will be for a minimum of two years, and the Executive Committee will consider those opt-up requests at only its April and May meetings each year.
The Council approved a number of increased benefits for MHSAA-registered game officials, including raises in postseason game fees paid to officials across all sports. Also moving forward, MHSAA officials will be provided membership in the National Association of Sports Officials (NASO), which will provide expanded liability insurance plus additional resources and professional services for all MHSAA registered officials. The Council also approved a change to the registration process and fees that will automatically provide each official registration in two sports. All three changes were proposed by the Audit & Finance Committee.
The Council also approved a rule change allowing the use of school transportation during summer, but it must be funded from school-approved activities of booster clubs, school teams, student groups and community, civic or service groups. This includes the use of busses, vans and other vehicles owned or leased by the school district or operated by any entity with which the district contracts to provide transportation services.
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.