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.
2023 Forsythe Award Celebrates Leinaar's 40 Years Dedicated to School Sports
By
Geoff Kimmerly
MHSAA.com senior editor
March 8, 2023
Few people in Michigan have had a longer-lasting influence on the rules and policies of educational athletics than Frankfort’s Karen Leinaar, who has served in several roles locally, statewide and nationally over more than 40 years contributing to the school sports community.
Thank you, Bill Baker.
The longtime teacher, coach, principal and superintendent during a career that stretched across multiple schools – including Leinaar’s growing up, Delton Kellogg – made an impression on the standout multi-sport athlete before she graduated from high school in 1977. Baker’s philosophy and work led Leinaar to study education at Michigan State University and then brought her back as Delton’s athletic director to begin four decades of making the same impact on children in her hometown and eventually in hometowns all over Michigan and beyond.
Baker died in 2009, but not before continuing to mentor Leinaar through many good times and tough ones.
“The man had two daughters that I grew up with, his wife was a teacher, and he demonstrated to all of us – he never missed an event – that we were important to him. That even though we weren’t his kids, we were his kids and athletics was a way to help kids become better people – and for some kids it was the only thing that they had positive in their life,” Leinaar said. “And he made it known just to that individual kid how important their participation was and their involvement, and how that helped them become the person that they were.
“That to me was such an example of how to help people be good people, that I just took that role on.”
It’s a role in which she continues to serve. Leinaar began her career as an athletic administrator in 1982, and as the interim athletic director currently at Frankfort High School is serving her fifth district in that position. Since June 2019, she also has served as executive director of the Michigan Interscholastic Athletic Administrators Association (MIAAA), the professional organization for school sports administrators in the state with a membership of nearly 700.
To recognize that longtime and continuing impact, Leinaar has been named the 2023 honoree for the Michigan High School Athletic Association’s Charles E. Forsythe Award.
The annual award is in its 46th year and named after former MHSAA Executive Director Charles E. Forsythe, the Association's first full-time and longest-serving chief executive. Forsythe Award recipients are selected each year by the MHSAA Representative Council, based on an individual's outstanding contributions to the interscholastic athletics community.
Leinaar also served 22 years on the MHSAA’s Representative Council and a four-year term from 2009-13 on the Board of Directors for the National Federation of State High School Associations (NFHS), and just last week was named to the 2023 class of the National Interscholastic Athletic Administrators Association (NIAAA) Hall of Fame.
“It is impossible even to estimate the number of students, coaches, administrators and others who have been affected by the work Karen Leinaar has done to make school sports the best they can be – not only in her communities, but across Michigan and throughout the country,” MHSAA Executive Director Mark Uyl said. “There are few who have equaled her dedication and her support and promotion of the ideals of school-based sports. She has always placed an emphasis on being in the room, on the field or at the arena, actively participating in her leadership roles, and our programs are better for it.”
Leinaar first served as athletic director at Delton Kellogg for nearly 17 years, from March 1982 through October 1998. She spent three years at Gaylord, then 8½ at Benzie Central before taking over at Bear Lake in November 2010 and spending the next decade organizing athletic programs for students in grades 5-12 before retiring in January 2021. She came out of retirement to return to the athletic director’s chair this past fall as interim AD at Frankfort. She has completed nearly four years as MIAAA executive director, moving into that position after previously serving nine years as an assistant to the executive.
Leinaar began her service on the Representative Council in Fall 1999 and completed her last term as a statewide at-large representative at the Fall 2021 meeting.
She has been honored several times for her contributions. She received the MHSAA’s Women In Sports Leadership Award in 1998, a Citation from the NFHS in 2000, and she was named MIAAA Athletic Director of the Year in 2001. She received an MHSAA’s Allen W. Bush Award in 2014 – recognition given for work done generally behind the scenes and with little attention.
“This is the top of the mountain, per se. This one does mean so much,” Leinaar said of the Forsythe Award. “The names that are associated with this over the years, I never thought I’d be put in that group.”
Leinaar remains a continuous source of support at a multitude of MHSAA championship events, and during her time on Council was one of the most frequent representatives handing out trophies and medals to champions and runners-up at Finals events. She began while athletic director at Delton Kellogg hosting the MHSAA Volleyball Finals in Class B and Class C and continues to assist with those championships now played at Kellogg Arena in Battle Creek.
She also hosted Competitive Cheer Finals at Delton Kellogg in 1996 and 1997, Ski Finals while at Gaylord, and many more championship events across the Lower Peninsula. She continues to assist at the MHSAA’s Lower Peninsula Cross Country and Track & Field Finals.
After attending Delton Kellogg High School, Leinaar earned a bachelor’s degree in physical education, health and recreation, with a minor in driver education, from MSU in 1982. She completed a master’s in athletic administration from Western Michigan University in 1994.
Leinaar has been a member for 40 years of both the MIAAA and NIAAA, and has served as chairperson of the MIAAA Annual Conference and awards chairperson for both the state and national bodies. She’s also served as chairperson of the MIAAA’s Exemplary Athletic Program.
Past recipients of the Charles E. Forsythe Award
1978 - Brick Fowler, Port Huron; Paul Smarks, Warren
1979 - Earl Messner, Reed City; Howard Beatty, Saginaw
1980 - Max Carey, Freesoil
1981 - Steven Sluka, Grand Haven; Samuel Madden, Detroit
1982 - Ernest Buckholz, Mt. Clemens; T. Arthur Treloar, Petoskey
1983 - Leroy Dues, Detroit; Richard Maher, Sturgis
1984 - William Hart, Marquette; Donald Stamats, Caro
1985 - John Cotton, Farmington; Robert James, Warren
1986 - William Robinson, Detroit; Irving Soderland, Norway
1987 - Jack Streidl, Plainwell; Wayne Hellenga, Decatur
1988 - Jack Johnson, Dearborn; Alan Williams, North Adams
1989 - Walter Bazylewicz, Berkley; Dennis Kiley, Jackson
1990 - Webster Morrison, Pickford; Herbert Quade, Benton Harbor
1991 - Clifford Buckmaster, Petoskey; Donald Domke, Northville
1992 - William Maskill, Kalamazoo; Thomas G. McShannock, Muskegon
1993 - Roy A. Allen Jr., Detroit; John Duncan, Cedarville
1994 - Kermit Ambrose, Royal Oak
1995 - Bob Perry, Lowell
1996 - Charles H. Jones, Royal Oak
1997 - Michael A. Foster, Richland; Robert G. Grimes, Battle Creek
1998 - Lofton C. Greene, River Rouge; Joseph J. Todey, Essexville
1999 - Bernie Larson, Battle Creek
2000 - Blake Hagman, Kalamazoo; Jerry Cvengros, Escanaba
2001 - Norm Johnson, Bangor; George Lovich, Canton
2002 - John Fundukian, Novi
2003 - Ken Semelsberger, Port Huron
2004 - Marco Marcet, Frankenmuth
2005 - Jim Feldkamp, Troy
2006 - Dan McShannock, Midland; Dail Prucka, Monroe
2007 - Keith Eldred, Williamston; Tom Hickman, Spring Lake
2008 - Jamie Gent, Haslett; William Newkirk, Sanford Meridian
2009 - Paul Ellinger, Cheboygan
2010 - Rudy Godefroidt, Hemlock; Mike Boyd, Waterford
2011 - Eric C. Federico, Trenton
2012 - Bill Mick, Midland
2013 - Jim Gilmore, Tecumseh; Dave Hutton, Grandville
2014 - Dan Flynn, Escanaba
2015 - Hugh Matson, Saginaw
2016 - Gary Hice, Petoskey; Gina Mazzolini, Lansing
2017 - Chuck Nurek, Rochester Hills
2018 - Gary Ellis, Allegan
2019 - Jim Derocher, Negaunee; Fredrick J. Smith, Stevensville
2020 - Michael Garvey, Lawton
2021 - Leroy Hackley Jr., Byron Center; Patti Tibaldi, Traverse City
2022 - Bruce Horsch, Houghton
PHOTOS (Top) Karen Leinaar, left, awards the 2022 Division 4 volleyball finalist trophy to Indian River Inland Lakes coach Nicole Moore. (Middle) Leinaar accepts the MHSAA's Women In Sports Leadership Award in 1998.