Heel contact dynamics during slip events.
Cham-R; Musolino-M; Redfern-MS
Proceedings of the IEA 2000/HFES 2000 Congress, Vol. 4, San Diego, CA, July 30-August 4, 2000. Santa Monica, CA: Human Factors and Ergonomics Society, 2000 Jul; 4:514-517
Slips and falls are a major cause of injuries. In order to measure slip resistance under biomechanically relevant conditions, foot forces and motion from actual slip events must be known. This study recorded such biomechanical data. Six subjects walked on a level and 10 degree ramp with 2 possible contaminant conditions (dry, oil). Foot forces and motion were recorded at 350 Hz. Heel contact (HC) dynamics were compared among no-slip, slip-recovery and slip-fall events. Walking on oil generated patterns of backward/forward sliding foot motion similar to that on dry surfaces, but with higher peak velocities and more movement. Shear forces generated by the foot at HC were delayed on the oily surface compared to the dry surface.
Walking-surfaces; Environmental-hazards; Muscle-stress; Muscle-tissue; Age-factors; Age-groups; Surface-properties; Accident-prevention; Injury-prevention; Biomechanics; Ergonomics; Control-technology; Engineering-controls; Analytical-models; Analytical-processes
Proceedings of the IEA 2000/HFES 2000 Congress, Vol. 4, San Diego, CA, July 30-August 4, 2000
University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA