Soldier loads continue to rise in response to new technological capabilities and emerging threats. However, literature addressing the extent to which load mass properties affects operational task performance and mission outcome is sparse. The objective of this preliminary study was to quantify the effect of PPE mass properties (weight, bulk and stiffness) on combat mobility, as measured using the standardized Load Effects Assessment Program (LEAP) course. Twenty-four soldiers completed the LEAP course in three clothing and individual equipment (CIE) configurations (UE: unencumbered; FFO: full fighting order (FFO) without body armour; and FFO+: FFO with body armour). Significant differences between clothing conditions were revealed for LEAP performance metrics (overall course time). Regression analysis revealed significant relationships between overall mobility performance and condition mass properties of weight, bulk, and stiffness. Outcomes will influence the design of future CIE and future research in this area.
Task and physical demands analyses together can identify common and extreme postures and postural sequences, duration, frequency, and forces for Griffon Helicopter aircrew tasks and missions. A tasks and associated physical demands model was developed to estimate neck loads caused primarily by Night Vision Goggle usage. This integrated task and physical demands analysis was used to assess various solutions such as counterbalance or lighter helmets.
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