Impact and Cushioning

Air-cushioning in impact problems

Cushioning Systems for Impact Energy Absorption

In this paper we investigate the use of an innovative sheet folding theory and technology in the design of new cushioning systems. Flat sheets of material are folded into three dimensional patterns. The effectiveness of the folded pattern in absorbing impact energy without subjecting items being cushioned to high acceleration is dependent on the sheet material, the fold configuration (number of...

Shoe cushioning reduces impact and muscle activation during landings from unexpected, but not self-initiated, drops.

OBJECTIVES To date, few rigorous scientific studies have been conducted to understand the impact mechanics and muscle activation characteristics of different landing tasks and the influence of shoe properties. The aim of this study was to examine the effects of shoe cushioning on impact biomechanics and muscular responses during drop landings. DESIGN A single-blinded and randomized design. ...

Footwear Cushioning: Relating Objective and Subjective Measurements

Foot-ground interfaces exist in many different forms. Frequently the interface is a shoe or floor mat, and sometimes it is a carpet-like material, such as an Astroturf, providing specific biomechanical characteristics to help one perform effectively. Hence these interfaces can play an important role in improving functionality or performance, preventing injury, and reducing discomfort. Human mov...

The Myth of Running Shoe Cushioning

The advent of the “Running Boom” in the late 1970’s coincided with the introduction of the first “technical” running shoe products incorporating cushioned soles and features intended to stabilize the foot during ground contact. The sensation of comfort provided by cushioned running shoes appears to have facilitated the participation of many “joggers” who would otherwise not have taken up the sp...