Heel strike detection is an important cue for human gait recognition and detection in visual surveillance since the heel strike position can be used to derive the gait periodicity, stride and step length. We propose a novel method for heel strike detection using a gait trajectory model, which is robust to occlusion, camera view and to low resolution which can generalize to a variety of surveill...

As robot bodies become more capable, the motivation grows to better coordinate them—whether multiple limbs attached to a body or multiple bodies assigned to a task. This paper introduces a new formalism for coordination of periodic tasks, with specific application to gait transitions for legged platforms. Specifically, we make modest use of classical group theory to replace combinatorial search...

This paper addresses the problem of human gait recognition by applying model (in)validation techniques. The main idea is to associate to each class of gaits a nominal model and a class of bounded energy inputs. In this context, the problem of recognizing a sequence can be formulated as the problem of determining whether or not it could have been generated by a given model and its associated cla...

Active orthotic devices for joint articulation have a vast number of applications that could benefit many people. Examples include joint articulation for people suffering from disabilities, increased load carrying capacity and walking distance for humans, and gait training. The main goal of this research is to help people with disabilities regain natural walking ability by replicating normal wa...

In this paper, the numerical study focuses on stress field of knee meniscus in two gaits jumping motion, and injury its protection effect are studied based distribution characteristics meniscus. The gait simulation was carried out by using a more detailed healthy model including bone, articular cartilage, meniscus, ligaments peripheral soft tissues constructed combining CT MRI tomography, peak ...

Using “human-in-the-loop” (HIL) optimization can obtain suitable exoskeleton assistance patterns to improve walking economy. However, there are differences in these under different gait conditions, and currently most HIL optimizations use metabolic cost, which requires long periods be estimated for each control law, as the physiological objective minimize. We aimed construct a muscle-activity-b...

Musculoskeletal models are currently the primary means for estimating in vivo muscle and contact forces in the knee during gait. These models typically couple a dynamic skeletal model with individual muscle models but rarely include articular contact models due to their high computational cost. This study evaluates a novel method for predicting muscle and contact forces simultaneously in the kn...

A sagittal-plane model of the lower limb, which considered the possibility of antagonistic and synergistic muscle action and took account of the load-bearing roles of the cruciate ligaments, was applied to a dynamic analysis of level walking. It was hypothesized that: (1) the simple, one-sided constraints that intra-articular contact forces must be compressive and muscle and ligament forces ten...

BACKGROUND The optimization of gait performance is an important goal in the rehabilitation of children with cerebral palsy (CP) who present a prognosis associated with locomotion. Gait analysis using videos captured by digital cameras requires validation. OBJECTIVE To evaluate the validity of a method that involves the analysis of videos captured using a digital camera for quantifying the tem...

objectives: investigating the effect of endurance training program onthe gait pattern of non-active elderly people. methods & materials: this study has been done by a semi-experience method with 23 old men and women by the average and standard deviation of 70/50±6/9 years old (n=14 people of exercise group, n=9 people of control group). the exercise group took part in this program for eight wee...