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.
MHSAA Winter Sports Underway with 65,000 Athletes Beginning Competition
By
Geoff Kimmerly
MHSAA.com senior editor
December 5, 2023
With the first girls basketball games, wrestling matches and ski races joining the event schedule this week, an estimated 65,000 athletes will be competing across the 13 sports for which the Michigan High School Athletic Association sponsors postseason tournaments.
Girls basketball tipped off Monday, Dec. 4, and the first boys and girls wrestling meets may take place Wednesday, Dec. 6. The first girls and boys ski races may begin Saturday, Dec. 9, when they will join competition already underway in boys basketball, girls and boys bowling, girls competitive cheer, girls gymnastics, boys ice hockey, Upper Peninsula girls swimming & diving, and boys swimming & diving across both peninsulas.
The MHSAA winter schedule concludes this 2023-24 school year with the Girls Basketball Finals on March 23. This will be the first time since 2018-19 that the girls basketball tournament will finish the winter season, a switch made necessary by the start of the NCAA Women’s Basketball Tournament March 22-23 and the possibility Michigan State University could host first-round games at the Breslin Center, where the MHSAA plays both its girls and boys basketball Semifinals and Finals.
Three more sports will incorporate changes this season related to MHSAA Tournament format or qualification.
For girls and boys bowling, Regionals will be conducted at eight sites – instead of the previous six – with each site qualifying to Finals its top two team finishers and the top seven singles for both girls and boys competitions. For the Team Bowling Finals, match play has been switched to a head-to-head, best-of-five Baker game format, whereas previously the format included regular games rolled by individual bowlers.
In girls gymnastics, an addition to criteria is expected to classify gymnasts more accurately as Division 1 (most skilled/experienced) or Division 2 for MHSAA Tournament individual competition. Athletes who have previously competed in a non-school event at either the Sapphire or Diamond Xcel levels would be required to compete at the Division 1 level for MHSAA postseason competition. These designations were added to other criteria used to determine an individual competitor’s division.
A change that led to much larger event fields at the Lower Peninsula Girls Swimming & Diving Finals this fall is expected to produce the same at the LP Boys Swimming & Diving Finals this winter. Beginning this season, qualifying times have been determined based on the past five years of MHSAA race data, but also accounting for past numbers of qualifiers in each swim race – which should, as with the girls, allow for more boys to advance to the Finals in events where fields have not been full over the previous five seasons.
Additionally, the Competitive Cheer Finals will return to its traditional Friday-Saturday schedule, March 1-2 at McGuirk Arena at Central Michigan University, with Division 1 on Friday and Divisions 2-4 on Saturday.
This regular season, wrestlers have two more opportunities to compete. Teams are allowed two more dual meets (between two teams only, not to be converted into three or four-team meets), bringing the total allowed days of competition to 16 with no more than eight of those allowed for tournament-type events where a wrestler competes more than twice.
At those tournament-type events, wrestlers may now compete in up to six matches on one day of competition (as opposed to the previous five matches per day) – but an athlete may not wrestle in more than 10 matches over two consecutive days.
An adjustment to the awarding of free throws in basketball is likely to be the most noticeable in-game change for any winter sport this season. One-and-one free throws have been eliminated, and fouls no longer will be totaled per half. Instead, fouls are totaled and reset every quarter, and two free throws are awarded with the fifth foul of each quarter.
The 2023-24 Winter campaign culminates with postseason tournaments, as the championship schedule begins with the Upper Peninsula Girls & Boys Swimming & Diving Finals on Feb. 17 and wraps up with the Girls Basketball Finals on March 23. Here is a complete list of winter tournament dates:
Boys Basketball
Districts – Feb. 26, 28, March 1
Regionals – March 5, 7
Quarterfinals – March 12
Semifinals – March 14-15
Finals – March 16
Girls Basketball
Districts – March 4, 6, 8
Regionals – March 11, 13
Quarterfinals – March 19
Semifinals – March 21-22
Finals – March 23
Bowling
Regionals – Feb. 23-24
Finals – March 1-2
Competitive Cheer
Districts – Feb. 16-17
Regionals – Feb. 24
Finals – March 1-2
Gymnastics
Regionals – March 2
Finals – March 8-9
Ice Hockey
Regionals – Feb. 19-28
Quarterfinals – March 2
Semifinals – March 7-8
Finals – March 9
Skiing
Regionals – Feb. 12-16
Finals – Feb. 26
Swimming & Diving
Upper Peninsula Girls/Boys Finals – Feb. 17
Lower Peninsula Boys Diving Regionals – Feb. 29
Lower Peninsula Boys Finals – March 8-9
Wrestling – Team
Districts – Feb. 7-8
Regionals – Feb. 14
Finals – Feb. 23-24
Wrestling – Individual
Districts – Feb. 10
Boys Regionals – Feb. 17
Girls Regionals – Feb. 18
Finals – March 1-2
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.