Meet the CoBal Lab Team

Meet our skilled and productive CoBal Lab team! We welcome requests for information about our work and collaboration opportunities.
John J. Jeka

John J. Jeka

Principal investigator

Dr. John Jeka joined the University of Delaware in 2017 as Professor and Chair of the Department of Kinesiology and Applied Physiology. Dr. Jeka is internationally recognized for his work on human locomotion and balance, with a specific interest in how information from multiple senses is fused for upright stance control. His interdisciplinary research team, which included kinesiologist, biomedical engineers, physical therapists and mathematicians, investigates basic mechanisms in adaptive sensorimotor control in healthy individuals and in patient populations with neurological diseases. With over $10 million in funding, Dr Jeka has been continuously funded since 1994 with grants from the National Institutes of Health and the National Science Foundation as well as private foundation such as the Shriners Foundation and the Erickson Foundation. He has published over 80 articles and has patents on assistive devices to aid mobility.



Graduate Students

Felipe Yamaguchi

Stephen “Deebs” DiBianca

Maelyn Arcodia

Eman Alsaqabi



Undergraduate Students



Graduate Students

Felipe Yamaguchi

Felipe Yamaguchi

Graduate Student

Felipe is a PhD student at the Biomechanics and Movement Science program. He was born and raised in Brazil, where he graduated in Physical Therapy at Universidade Metodista de Piracicaba (UNIMEP). He specialized in osteopathy at Escuela de Osteopatia de Madrid, Spain. Felipe owned and led three Physical Therapy clinics in Brazil, before he decided to move abroad to pursue graduate studies. As an osteopath he developed knowledge in how biomechanical dysfunctions can influence various impairments between interconnected regions of the body. Felipe joined the CoBaL Lab with an interest in vestibular impairments across different populations. Felipe is a sports enthusiast and a former professional swimmer, when he is not at the lab, he enjoys spending time with his family.


Maelyn Acordia

Maelyn Acordia

Ph.D. Student

Maelyn is a current graduate student in the Biomechanics and Movement Science Program. Maelyn received her B.S. in Neuroscience with a minor in biomechanical engineering from the University of Delaware. Previous experience includes building D.I.Y medical devices for those in the local disabilities community as well as motion capture analysis. Maelyn joined the CoBal Lab with an interest in understanding the neurological aspects of Parkinson’s Disease during locomotion. In her free time, she enjoys rock climbing, breakdancing, and reading.

Stephen DiBianca

Stephen DiBianca

Ph.D Student

Stephen is a current graduate student in the Biomechanics and Movement Science Program. Stephen received his B.S. in Biomedical Engineering with a concentration in biomechanics and human performance from Drexel University in Philadelphia. Previous work has spanned from medical device design of prosthetics and orthotics to modeling viscoelastic properties of biomaterials such as cartilage and bone. Stephen joined the CoBal Lab with an interest in neurological aspects of locomotion and virtual reality game design for clinical application. In his free time you can find him training in the Southern Chinese style of Kung Fu called Wing Chun and the Afro-Brazilian style of martial arts called Capoeira.

Lab Alumni

Post Docs

Hendrik Reimann – Research Assistant Professor at University of Delaware, Kinesiology  and Applied Physiology Dept.

Jaclyn Caccese – Assistant Professor – Ohio State University

David Grenet

Sungjae Hwang

Sean Carver

Hamid Bateni 

Wolfram Erlhagen


Fernando Vanderlinde dos Santos – Senior Product Engineer at Bertec Corportation

Tyler Fettrow – Postdoctoral Researcher at University of Florida 

Mariana Gongora 

Elizabeth D. Thompson – Assistant Professor at University of Delaware, Physical Therapy Dept.

David Clizbe

Lei (Leo) Ma – Temple University DPT program

Tippawan O-Phartkaruna

David Logan

Eric Anson – Assistant Professor at University of Rochester Medical Center

Peter Agada

Yuanfen Zhang

Robert Creath

Leslie Allison

Kaleb McDowell – Center for Agent Soldier Teaming – ARL

Kelvin Oie

Pedro Ribeiro