Kei Masani

ORCID: 0000-0002-0207-3241
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About
Contact & Profiles
Research Areas
  • Balance, Gait, and Falls Prevention
  • Muscle activation and electromyography studies
  • Cerebral Palsy and Movement Disorders
  • Spinal Cord Injury Research
  • Stroke Rehabilitation and Recovery
  • Motor Control and Adaptation
  • Effects of Vibration on Health
  • Neuroscience and Neural Engineering
  • Transcranial Magnetic Stimulation Studies
  • Musculoskeletal pain and rehabilitation
  • EEG and Brain-Computer Interfaces
  • Injury Epidemiology and Prevention
  • Neurological disorders and treatments
  • Myofascial pain diagnosis and treatment
  • Sports Performance and Training
  • Acupuncture Treatment Research Studies
  • Ergonomics and Musculoskeletal Disorders
  • Diabetic Foot Ulcer Assessment and Management
  • Lower Extremity Biomechanics and Pathologies
  • Advanced Sensor and Energy Harvesting Materials
  • Pain Management and Treatment
  • Heart Rate Variability and Autonomic Control
  • Tactile and Sensory Interactions
  • Noise Effects and Management
  • Scoliosis diagnosis and treatment

Toronto Rehabilitation Institute
2016-2025

University Health Network
2016-2025

University of Toronto
2016-2025

Kyoto University
2021

National Institutes of Health Clinical Center
2019-2020

Health Net
2014

Nippon Veterinary and Life Science University
2010-2011

National Rehabilitation Center for Persons with Disabilities
2009

University of Waterloo
2009

Northeastern University
2009

In literature, it has been suggested that the CNS anticipates spontaneous change in body position during quiet stance and continuously modulates ankle extensor muscle activity to compensate for change. The purpose of this study was investigate whether velocity feedback contributes by modulating activities an anticipatory fashion, facilitating effective control stance. Both theoretical analysis experiments were carried out what extent controlling with 16 healthy subjects who asked stand...

10.1152/jn.00730.2002 article EN Journal of Neurophysiology 2003-12-01

Background: Multi-channel surface functional electrical stimulation (FES) for walking has been used to improve voluntary and balance in individuals with spinal cord injury (SCI).Objective: To investigate short-and long-term benefits of 16 weeks thrice-weekly FES-assisted program, while ambulating on a body weight support treadmill harness system, versus non-FES exercise improvements gait chronic incomplete traumatic SCI, randomized controlled trial design.Methods: Individuals (≥18 months)...

10.1179/2045772314y.0000000263 article EN Journal of Spinal Cord Medicine 2014-09-01

The purpose of this study was to investigate whether or not the neuromuscular locomotor system is optimized at a unique speed by examining variability ground reaction force (GRF) pattern during walking in relation different constant speeds. Ten healthy male subjects were required walk on treadmill 3.0, 4.0, 5.0, 6.0, 7.0, and 8.0 km/h. Three components [vertical (F(z)), anteroposterior (F(y)), mediolateral (F(x)) force] GRF independently measured for approximately 35 steps consecutively each...

10.1152/japplphysiol.00969.2000 article EN Journal of Applied Physiology 2002-05-01

A critical limitation with transcutaneous neuromuscular electrical stimulation is the rapid onset of muscle fatigue. We have previously demonstrated that spatially distributed sequential (SDSS) shows a drastically greater fatigue-reducing ability compared to single active electrode (SES). The purposes this study were investigate (1) SDSS in more detail focusing on contractile properties and (2) mechanism effect using array-arranged electromyogram (EMG).SDSS was delivered through four...

10.1007/s00421-013-2807-4 article EN cc-by European Journal of Applied Physiology 2014-01-04

To determine quantitatively the features of alternate muscle activity between knee extensor synergists during low-level prolonged contraction, a surface electromyogram (EMG) was recorded from rectus femoris (RF), vastus lateralis (VL), and medialis (VM) in 11 subjects isometric extension exercise at 2.5% maximal voluntary contraction (MVC) for 60 min (experiment 1). Furthermore, to examine relation levels, six also performed sustained 5.0, 7.5, 10.0% MVC 2). Alternate among three muscles...

10.1152/japplphysiol.00764.2001 article EN Journal of Applied Physiology 2002-08-01

The delay of the sensory-motor feedback loop is a destabilizing factor within neural control mechanism quiet standing. purposes this study were 1) to experimentally identify neuromusculoskeletal torque-generation process during standing posture and 2) investigate effect induced by system on balance Ten healthy adults participated in study. ankle torque, angle, electromyograms from right lower leg muscles measured. A ground-fixed support device was used subject at his/her knees, without...

10.1152/jn.00801.2007 article EN Journal of Neurophysiology 2008-07-02

A total of 318 Escherichia coli isolates obtained from different food-producing animals affected with colibacillosis between 2001 and 2006 were subjected to phylogenetic analysis: 72 bovine isolates, 89 poultry 157 porcine isolates. Overall, the group was predominant in cattle (36/72, 50%) pigs (101/157, 64.3%) whereas groups (44/89, 49.4%) D (40/89, 44.9%) poultry. In addition, B2 not found among diseased except for a isolate. Thus, distribution E. by animal species. Among cefazolin...

10.1186/1751-0147-53-52 article EN cc-by Acta veterinaria Scandinavica 2011-10-12

Functional electrical stimulation (FES) is limited by the rapid onset of muscle fatigue caused localized nerve excitation repeatedly activating only a subset motor units. The purpose this study was to investigate reducing sequentially changing, pulse pulse, area using multiple surface electrodes that cover same as one electrode during conventional stimulation. Paralyzed triceps surae muscles an individual with complete spinal cord injury were stimulated, via tibial nerve, through four active...

10.1111/j.1525-1594.2010.01195.x article EN Artificial Organs 2011-04-19

Background/Objective: The most significant complication and leading cause of death for people with spinal cord injury (SCI) is coronary artery disease (CAD). It has been confirmed that aortic pulse wave velocity (PVW) an emerging CAD predictor among able-bodied individuals. No prior study described PWV values SCI. objective this was to compare (the common carotid femoral artery) PWV, arm brachial radial PVW, leg posterior tibial PVW in SCI (SCI group) controls (non-SCI group).Methods:...

10.1080/10790268.2009.11760755 article EN Journal of Spinal Cord Medicine 2009-01-01

Our studies have recently demonstrated that a proportional and derivative (PD) feedback controller, which takes advantage of the body's position velocity information to regulate balance during quiet standing, can compensate for long neurological time delays generate control command precedes body sway by 100-200 ms. Furthermore, PD gain pairs were identified ensure robust system behavior at same dynamic responses as observed in standing experiments with able-bodied subjects. The purpose...

10.1109/tnsre.2007.897016 article EN IEEE Transactions on Neural Systems and Rehabilitation Engineering 2007-06-01
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