Gender differences in lower extremity landing mechanics caused by neuromuscular fatigue.

Background: Neuromuscular fatigue has been suggested as an extrinsic factor in the mechanism of noncontact anterior cruciate ligament injury in both genders.

Purpose: To determine and describe the lower extremity kinematic and kinetic differences caused by neuromuscular fatigue during drop landings and compare changes between age- and skill-matched male and female athletes.

Methods: Inverse dynamic solutions estimated lower extremity flexion-extension and varus-valgus kinematics and kinetics for 14 female and 16 male athletes performing a single-legged 50-cm drop landing.

Movement-based feedback may reduce spinal moments in male workers during lift and lowering tasks.

Background And Purpose: To assess if lifting performance can be modified and spine stresses reduced in workers who perform repetitive material-handling jobs in a warehouse environment via a novel real-time, movement-based feedback training protocol.

Method: A pre-test/post-test group study design was used with a control group. Data were collected in a warehouse setting and analysed in a university setting.