The in vivo elastic properties of the plantar fascia during the contact phase of walking were determined experimentally by integrating a pressure-sensitive optical gait platform with a radiographic fluoroscopy system for recording skeletal motion. In order to calculate the fascia's tension-deformation relation, lateral images of the foot's skeleton that allowed evaluation of the fascia's transi...

This paper presents an analysis of the rollover shape and energy storage and return in a prosthetic foot made from a compliant cantilevered beam. The rollover shape of a prosthetic foot is defined as the path of the center of pressure along the bottom of the foot during stance phase of gait, from heel strike to toe off. This path is rotated into the reference frame of the ankle-knee segment of ...

Fast human walking includes a phase where the stance heel rises from the ground and the stance foot rotates about the stance toe. This phase where the biped becomes under-actuated is not present during the walk of humanoid robots. The objective of this study is to determine if this phase is useful to reduce the energy consumed in the walking. In order to study the efficiency of this phase, six ...

The foot is an essential part of the components prosthesis. Therefore, selected materials’ mechanical properties, cost, and weight must be considered when manufacturing prosthetic foot. This study studied properties materials used for feet. material chosen Carbon Fiber, Glass fiber, hybrid composite material. aims to simulate find optimal selection feet by assuming boundary conditions, reaction...

The purpose of this study was to investigate the metabolic cost of wearing a prototype exoskeleton (EXO) while walking with a range of heavy loads, and to analyze the associated gait biomechanics. Ten Army enlisted men participated in the study. Oxygen consumption (VO2) and gait biomechanics were measured while Soldiers walked at 4.83 km/h and 0% grade under three realistic load weight configur...

Touch of the hand with a stationary surface at nonmechanically supportive force levels (<1 N) greatly attenuates postural sway during quiet stance. We predicted such haptic contact would also suppress the postural destabilization caused by vibrating the right peroneus brevis and longus muscles of subjects standing heel-to-toe with eyes closed. In experiment 1, ten subjects were tested under fou...

Determining the neural correlates of loss of balance during walking could lead to improved clinical assessment and treatment for individuals predisposed to falls. We used high-density electroencephalography (EEG) combined with independent component analysis (ICA) to study loss of balance during human walking. We examined 26 healthy young subjects performing heel-to-toe walking on a treadmill-mo...

To determine whether back foot (BF) position influences dorsiflexion range of motion (DFROM) during three different positions the weight bearing lunge test (WBLT). Randomised, repeated measures design. Sports clubs. 52 athletes participating in cutting and pivoting sports. DFROM was obtained using a WBLT BF positions: heel full contact with floor, raised off floor non (NWB). All measurements we...