Differences in Kinematics and Electromyographic Activity between Men and Women during the Single-Legged Squat*:

摘要: Background: Numerous factors have been identified as potentially increasing the risk of anterior cruciate ligament injury in female athlete. However, differences between sexes lower extremity coordination, particularly hip control, are only minimally understood. Hypothesis: There is no difference kinematic or electromyographic data during single-legged squat men and women. Study Design: Descriptive comparison study. Methods: We kinematically electromyographically analyzed 18 intercollegiate athletes (9 male, 9 female). Subjects performed five squats on their dominant leg, lowering themselves far possible then returning to a standing position without losing balance. Results: Women demonstrated significantly more ankle dorsiflexion, pronation, adduction, flexion, external rotation, less trunk lateral flexion than men. These were associated with decreased ability women maintain varus knee compared Analysis all eight tested muscles that had greater muscle activation When each was separately, rectus femoris found be statistically both area under linear envelope maximal data. Conclusions: Under physiologic load commonly assumed sports, tend entire activate manner could increase strain ligament. © 2003 American Orthopaedic Society for Sports Medicine