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Effects of Static and Dynamic Stretching on Injury Prevention in High School Soccer Athletes: A Randomized Trial
Alan A Zakaria1, Robert B Kiningham, Ananda Sen
1Dept of Internal Medicine and Dept of Biostatistics, University of Michigan Health System, Ann Arbor, MI.
Objective:
To determine if there is any benefit to static stretching after performing a dynamic warm-up in the prevention of injury in high school soccer athletes.
Design:
Prospective cluster randomized nonblinded study.
Setting:
12 high schools with varsity and junior varsity boys' soccer teams (24 soccer teams) across the state of Michigan.
Participants:
Four hundred ninety-nine student-athletes were enrolled, and 465 completed the study. One high school dropped out of the study in the first week, leaving a total of 22 teams.
Interventions:
Dynamic stretching protocol vs dynamic + static (D+S) stretching protocol.
Main Outcome Measures:
Lower-extremity, core, or lower-back injuries per team.
Results:
Twelve teams performed the dynamic stretching protocol and 10 teams performed the D+S stretching protocol. There were 17 injuries (1.42 ± 1.49 injuries/ team) among the teams that performed the dynamic stretching protocol and 20 injuries (2.0 ± 1.24 injuries/ team) among the teams that performed the D+S protocol. There was no statistically significant difference in injuries between the 2 groups (P = .33).
Conclusions:
There is no difference between dynamic stretching and D+S stretching in the prevention of lower-extremity, core, and back injuries in high school male soccer athletes. Static stretching does not provide any added benefit to dynamic stretching in the prevention of injury in this population before exercise.
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