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 2016
December 12, 2016
By Geoff Kimmerly
Second Half editor
The Representative Council of the Michigan High School Athletic Association took actions at its Fall Meeting on Dec. 2 in East Lansing that will affect baseball and Upper Peninsula golf teams this spring.
Generally, the Council takes only a few actions during its Fall Meeting, with topics often introduced for additional consideration and actions during its meetings in winter and spring. However, a rules change approved in baseball was required by the National Federation of State High School Associations before the start of the spring 2017 season, while the golf change is a result of multiple years of discussion concerning classifications for MHSAA Upper Peninsula Finals.
Beginning this upcoming baseball season, pitchers will be required to follow a pitch count limit, instead of the previous rule that limited their innings based on the number of outs thrown. In July, the NFHS Baseball Rules Committee mandated that all states adopt a pitch count rule in an effort to further prevent pitcher arm injuries, effective with the 2016-17 school year. Pitchers will be allowed to throw a maximum of 105 pitches in one day; they will be required to rest three days if they throw more than 75. Pitchers must rest two days after throwing 51-75 pitches, one day after throwing 26-50, and will not be required to rest if they throw 25 or fewer pitches in one day. The MHSAA pitch count rule was the result of work by a task force made up of current and former coaches and administrators, including representatives of the Michigan High School Baseball Coaches Association.
For Upper Peninsula Golf, both the girls and boys tournaments, the Council approved a change classifying participating schools into three equal divisions beginning in the spring of 2017. Previously, Class A, B and C schools were split evenly into Divisions 1 and 2, with Division 3 reserved for Class D schools. However, Class D had grown to include nearly twice as many participating schools as both Division 1 and 2, complicating tournament logistics. This proposal was advanced by the Upper Peninsula Athletic Committee.
The Council also approved for the MHSAA’s Multi-Sport Participation Task Force to continue its work indefinitely beyond the end of 2016, and also approved possible expansion of the task force as it continues to work toward preparing strategies and specific tactics for the MHSAA, allied organizations and local schools and conferences to promote multi-sport participation by student-athletes. The task force has determined it must focus on educating students and parents on the benefits of multi-sport participation when students are at younger ages – as early as when they are attending elementary school – while providing service and support at the junior high/middle school level; both efforts aim to create an atmosphere promoting multi-sport participation that would carry on when students reach high school.
Results of efforts to grow junior high/middle school membership were reported, with 757 junior high/middle schools in the MHSAA’s membership for 2016-17, compared to 705 at the conclusion of the 2015-16 school year. Of those 757, there are 498 that have included sixth grade in their membership, as allowed this school year for the first time. The Council also heard reports related to the MHSAA’s “Defining & Defending Educational Athletics” mission, notably on a pair of efforts by the National Federation focused on enhancing participation, reducing risk, optimizing performance and spreading the positive message of educational athletics. In addition, the Council discussed results of a recent survey of officials who had left the avocation and their reasons why, with the hope of staff using that data as it works to recruit and retain officials.
The Council also began a discussion on the future of 8-player football, including its growth and potential tournament format modifications, and the potential effects on 11-player football. There were 52 8-player football teams in Michigan for the 2016 season, including four that were ineligible for postseason play because their enrollments were too high (only Class D schools are eligible for the playoffs in the 8-player format). Discussions will continue with the MHSAA Classification Committee and Football Committee and at the League Leadership meeting before returning to the Council’s agenda.
The Fall Meeting saw the addition of Vicky Groat, principal and athletic director at Battle Creek St. Philip High School, to the 19-person Council. She was appointed to a two-year term. She also serves as her school’s varsity volleyball coach. Groat fills the position formerly held by Orlando Medina, athletic director at Harrison Township L’Anse Creuse High School, whose term ended. Also, Pat Watson, principal at West Bloomfield High School, was re-appointed for a second two-year term.
The Council re-elected Scott Grimes, assistant superintendent of human services for Grand Haven Area Public Schools, as its president; Benton Harbor athletic director Fred Smith was re-elected vice president and Vic Michaels, director of physical education and athletics for the Archdiocese of Detroit, was re-elected 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 1,400 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.