Preliminary Head-Supported Mass Performance Guidance for Dismounted Soldier Environments.

Introduction: The helmet is an ideal platform to mount technology that gives U.S. Soldiers an advantage over the enemy; the total system is recognized quantitatively as head-supported mass (HSM).

Evaluation of Head and Body Kinematics Experienced During Parachute Opening Shock.

Introduction: The U.S. Army conducts airborne operations in order to insert soldiers into combat.

Mass Properties Comparison of Dismounted and Ground-Mounted Head-Supported Mass Configurations to Existing Performance and Acute Injury Risk Guidelines.

In order to limit the aviator's exposure to potentially unsafe helmet configurations, the U.S. Army Aeromedical Research Laboratory (USAARL) developed the USAARL Head-supported mass (HSM) Performance Curve and Acute Injury Risk Curve as guidelines for Army aviation HSM.

Characterization of the frequency and muscle responses of the lumbar and thoracic spines of seated volunteers during sinusoidal whole body vibration.

Whole body vibration has been postulated to contribute to the onset of back pain. However, little is known about the relationship between vibration exposure, the biomechanical response, and the physiological responses of the seated human. The aim of this study was to measure the frequency and corresponding muscle responses of seated male volunteers during whole body vibration exposures along the vertical and anteroposterior directions to define the transmissibility and associated muscle activation responses for relevant whole body vibration exposures.