This work presents a novel gait generation method for biped hopping with point feet. The investigated biped model consists of a kneed massless leg and a trunk with two Hill-type muscles at the hip and knee joints. The dynamic equations of the system are derived using Lagrange method. Since the most important phase to stabilize bipedal running and hopping motion is stance phase, this paper deals...

INTRODUCTION In this study, we propose a new method to simulate human gait motion when muscles are weakened. The method is based on the enhanced version of 3D linear inverted pendulum model that is used for generation of gait in robotics. After the normal gait motion is generated by setting the initial posture and the parameters that decide the trajectories of the center of mass and angular mom...

Principles of muscle coordination in gait have been based largely on analyses of body motion, ground reaction force and EMG measurements. However, data from dynamical simulations provide a cause-effect framework for analyzing these measurements; for example, Part I (Gait Posture, in press) of this two-part review described how force generation in a muscle affects the acceleration and energy flo...

Piezoelectric energy harvester (PEH), which generates electricity from stress or vibrations, is attracting tremendous attention as a viable solution to extend battery life of wearable devices. More interestingly, besides the harvesting capability, recent research has demonstrated feasibility leveraging PEH an power-free sensor for gait recognition its vibration patters are significantly influen...

Patients with multiple deep cerebral infarcts and white matter degeneration commonly exhibit a hesitant, shuffling gait, with preserved arm swing. This pattern of walking is called lower-half or lower-body parkinsonism. Gait initiation and turning consist of one or more short, hesitant steps in which the feet shuffle across the floor. This abnormality of gait initiation was studied with quantit...

objectives: this study aimed to compare elderly fallers and non fallers by balance test under dual tasks conditions. methods & materials: this study was a analyse-comparative study. subjects were chosen from three parks of tehran. subjects were 20 older adults with no history of falls (aged 72.60±5years) and 21 older adults with a history of 2 or more falls in the last one year (aged 74.50±6 ye...

objectives: this paper describes further improvement and preliminarily evaluation of a novel viscoelastic ankle-foot prosthesis prototype. the objective was to control the ankle hysteresis at slow and normal walking speeds. methods: inspired by the ankle biomechanics, in which the hysteresis differs based on the gait speeds, a manually damping control mechanism imbedded in the prosthesis for ad...

Objectives: There exists no study concerning gait pattern while engaging in dual-task activities on different sizes of mobile devices. The present study aimed to compare gait patterns during normal walking, walking with smartphone use, and walking with tablet use.  Methods: Seventeen healthy female participants with an age range of 19-24 years (mean±SD age: 20.29±1.61 years, weight: 49.82±4.46...

Quadrupeds exhibit versatile gait patterns (walk, trot, pace, bound, etc.) in response to locomotion speed [1, 2]. These locomotor patterns are generated via the coordination between limb movements, i.e., interlimb coordination. However, the interlimb coordination mechanism for the generation of such locomotor patterns requires further investigation because it has not been clarified thus far.