The purpose of the present study was to examine whether serum vitamin D status is associated with a change in gait speed in young adults. In this cross-sectional study, 60 young adults aged ≥ 19 years (36 female and 24 male participants) were recruited from the general population. Spatiotemporal parameters of gait were assessed by using a validated wireless inertial sensing device. The blood vi...

Asymmetrical gait and a reduction in weight bearing on the affected side are a common finding in chronic stroke survivors. The purpose of this pilot study was to determine the effectiveness of a shoe insole device that we developed, called Walk-Even, in correcting asymmetric gait in chronic stroke survivors. Six individuals with chronic (>6 months) stroke underwent 8 weeks of intervention with ...

Toe-in gait and crouch gait can make children with mild cerebral palsy fall and suffer improper balance during walking or ambulation training. A customized external strap orthosis for correcting leg alignment was used to resolve this problem. The purpose of this study was to research the immediate effects while wearing the customized external strap orthosis. Pressure platform was used to assess...

Secure spontaneous authentication between devices worn at arbitrary locations on the same body is a challenging, yet unsolved problem. We propose BANDANA, the first-ever implicit secure device-to-device authentication scheme for devices worn on the same body. Our approach leverages instantaneous variations in acceleration patterns from the user’s gait to extract alwaysfresh secure secrets. It e...

We present experimental data for an ankle exoskeleton device that provides a metabolic benefit during running. Intuitively, there is an optimal level of power than any particular human can accept and use to benefit walking or running, which is a function of both the particular human and selected gait speed. In this paper, we will present theoretical modeling results to explain recent data for t...

PURPOSE Foot drop is a common cause of gait impairment in individuals with hemiparesis. The objective of this study was to determine the short-term and long-term effects on functional gait of a neuroprosthesis that provides functional electrical stimulation (FES) to correct footdrop. METHODS Sixteen individuals (mean age, 55.0 +/- 14.6 years) with chronic hemiparesis (mean years since insult,...

BACKGROUND This study aimed to demonstrate the feasibility of measuring frailty in patients with cardiac implantable electrical devices while validating the physiologic significance of device-detected physical activity by evaluating its association with frailty and mobility. METHODS AND RESULTS Outpatients with cardiac implantable electrical devices compatible with physical activity analysis ...

Inertial Measurement Units (IMUs) are often used to measure motion parameters of human body in indoor/outdoor localization applications. Most of commercially available low-cost IMUs have limited number of sensors and are often connected to a computer by a wired connection (usually by USB). The disadvantage of using wired IMUs in human gait measurement is that, the wires disturb the natural gait...

OBJECTIVES Conservative treatments for anterior cruciate ligament (ACL) tears may have just as good an outcome as invasive treatments. These include muscle strengthening and neuromuscular proprioceptive exercises to improve joint stability and restore motion to the knee. The Purpose of the current work presents was to examine the feasibility of a novel non-invasive biomechanical treatment to im...

Objectives: Identification of cow lameness is important to farmers improve and manage cattle health welfare. No validated tools exist for automatic detection. In this research, we aim early detect the by identifying instantaneous fundamental gait harmonics from low frequency (16Hz) acceleration signals recorded using leg-worn sensors. Methods: A triaxial accelerometer has been worn on each leg....