Gender Differences in Landing Mechanics Vary Depending on the Type of Landing.

Clinical Journal of Sport Medicine, 2012

Abstract OBJECTIVE: Men and women exhibit different movement patterns, which are thought to contribute to the increased incidence of anterior cruciate ligament injuries in females.
Although gender differences have been observed in movement, few studies have examined gender differences during different types of landings.
All subjects performed a soccer-specific jump heading activity to examine differences in landing mechanics before and after heading the soccer ball.
Subjects began the task by performing a forward jump on to 2 force platforms (landing 1) and conducting a countermovement before jumping up to head a soccer ball that was hanging above the force platform before, then landing back on the force platforms (landing 2).
MAIN OUTCOME MEASURES: A 2-way analysis of variance (gender × landing) was performed to examine the interaction between gender and different types of landings on sagittal plane joint mechanics.
RESULTS: Significant interactions existed for the peak hip extension moment and vertical ground reaction force where the male players exhibited increased values during the second landing compared with the female players.
Males exhibited greater peak plantarflexion and knee extension moments, however, decreased peak hip flexion.
Main effects for landing exhibited lower kinematic and larger kinetic values except for the peak plantarflexion moment.
Therefore, specificity of landing type may be important to consider when screening for injury risk factors.
CLINICAL RELEVANCE: This study examines the differences between genders during 2 different landing tasks and demonstrates the importance of considering the jumping task when screening individuals for injury risk factors.