Author: Katie

Celebrating Our Research Trainees at the 2025 UW Undergraduate Research Symposium

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The University of Washington Undergraduate Research Symposium is an annual, day-long celebration of undergraduate achievement in research, scholarship, and creative expression. This year, we are proud to highlight the outstanding contributions of our lab’s research trainees who shared their innovative work with the broader academic community.

Alisha Bose delivered a compelling podium presentation titled “How Does Clinical Presentation Impact Gameplay in Early Intervention?” Her research explores how different clinical profiles may influence the way children engage with therapeutic play, contributing valuable insights to the field of accessible design.

Katie Leija presented a poster on “Impact of Powered Mobility Device Seat Design on a Young Child’s Exploration,” examining how adaptive seating affects mobility and interaction in young children using powered mobility devices.

Spencer Hensley shared his work through a poster presentation titled “Effects of Mobility Aids on Muscle Activity in Kids with DS,” which investigates how different mobility aids influence muscle engagement during play in children with Down syndrome.

We are incredibly proud of Alisha, Spencer, and Katie for their dedication and creativity. Their projects reflect the core mission of the Neuromechanics & Mobility Lab—engineering to enhance human mobility, play, and exploration. Through their work, they are helping to advance inclusive design and accessible technology that empowers individuals of all abilities.

  • A person stands at a podium giving a presentation. Behind them, a large screen displays the title slide: “HOW DOES CLINICAL PRESENTATION IMPACT GAMEPLAY IN EARLY INTERVENTION?” by Alisha Bose.
  • A person stands next to a research poster titled “Impact of Powered Mobility Device Seat Design on a Young Child's Exploration,” featuring the University of Washington logo.
  • A person stands beside a scientific poster titled “Effects of Mobility Aids on Muscle Activity in Kids with DS.”

Neuromechanics & Mobility Lab presents at RehabWeek 2025

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Members of the Neuromechanics and Mobility Lab has a busy week attending the 2025 Rehabilitation Engineering and Assistive Technology Society of North America (RESNA) Conference, held as part of RehabWeek 2025 from May 12-16 in Chicago, IL.

RehabWeek is a premier, week-long event that brings together multiple conferences in the field of rehabilitation technology. It fosters cross-disciplinary collaboration and innovation among researchers, clinicians, and industry professionals. Our lab was proud to be part of this vibrant community, with several members presenting their research and contributing to the ongoing dialogue on the future of rehabilitation science.

Two of our PhD students, Mia Hoffman and Madeleine McCreary, participated in the RESNA Student Scientific Paper Competition and presented their work during the Student Scientific Paper Platform session. Mia presented her research titled “Measuring Early Intervention Providers’ Use of a Novel Switch-Accessible Play Kit,” while Maddie shared findings from our lab’s Early Mobility & Play research in her talk, “Kicking it off: Do toddlers with disabilities activate leg muscles when driving with a joystick?”

Mia Hoffman also led a session on Play and Recreation in Assistive Technology titled “Switch It Up: From Adapted Toys to Therapeutic Gaming.”

Alexandra (Sasha) Portnova-Fahreeva presented a poster titled “Evaluating the Effects of Noninvasive Spinal Stimulation on Gait Parameters in Cerebral Palsy via Markerless Motion Capture” sharing findings from our lab’s Spinal Neuromodulation research. She also participated in the RESNA Student Design Challenge with her project, “H.A.T. – A Camera-Based Finger Range-of-Motion Hand Assessment Tool to Enhance Therapy Practices” where she and her team received honorable mention.

Katie Landwehr-Prakel presented a poster on “Cardiovascular Load of Using a Walker-Based Exoskeleton in Children with Cerebral Palsy,” and placed in the top 10 of the Fast Forward Poster Competition.

We are especially proud to share that Mia Hoffman was awarded 1st place and Madeleine McCreary received 2nd place in the Student Scientific Paper Competition. Congratulations to both for their outstanding work and well-deserved recognition.

We’re incredibly proud of our team’s contributions and accomplishments at RehabWeek 2025!

Neuromechanics & Mobility Lab Presents at NWBS 2025

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Members of the Neuromechanics & Mobility Lab traveled to Vancouver, BC for the 2025 Northwest Biomechanics Symposium (NWBS) May 2-3 hosted by the University of British Columbia. The Northwest Biomechanics Symposium is a student-friendly conference and incorporates research labs from all of the Northwest, including Canada.

Ally Clarke and Madeleine McCreary gave podium presentations at the conference in Vancouver. Mia Hoffman, Alisha Bose, and Katie Landwehr-Prakel each gave a poster presentation.

A special congratulations to Ally Clarke and Madeleine McCreary for receiving the Honorable Mention Award and Best Podium Award, respectively, in the PhD category.

We are looking forward to NWBS 2026 in Bozeman, MT!

National Biomechanics Day 2025

Katie News, Outreach , ,

On April 23, 2025, the Neuromechanics & Mobility Lab celebrated National Biomechanics Day (NBD) at the VA Puget Sound. Katie Landwehr-Prakel, alongside fellow biomechanics researchers with the Ingraham Lab, and Center for Limb Loss and MoBility (CLiMB) hosted over 75 students from a local high school. NBD is a world-wide celebration of Biomechanics in its many forms for high school students and teachers.

Katie, Siena, Annika, and Zijie hosted a station called “MyoDino: A Muscle Powered Dinosaur Game”. While discussing how muscle activity is measured in our research, students could play a “no-internet” Google chrome dinosaur jumping game on a computer, controlled by a stick-on arm surface EMG sensor.

Pitts MN, Ebers MR, Agresta CE, Steele KM (2025) Evaluating Sparse Inertial Measurement Unit Configurations for Inferring Treadmill Running Motion

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Journal Article in Sensors

 Inertial measurement units (IMUs) are used to analyze running performance. While leveraging one sensor to estimate kinematic and kinetic variables is common, sparsity limits the number of digital biomarkers that can be evaluated.

An illustration demonstrating experimental factors influencing the accuracy of motion inference when using Shallow recurrent decoder networks (SHRED) can reconstruct a dense set of time-series signals from a single input sensor. Running speed and sampling rate were most influential, while sensor location, and sensor type were neutral.Aim: Shallow recurrent decoder networks (SHRED) can reconstruct a dense set of time-series signals from a single input sensor and have been successful in human mobility applications, highlighting the potential for this algorithm to monitor running.

Methods: We trained and tested subject-specific SHRED models of nine subjects running on a treadmill to map from one input sensor to the remaining three IMUs. We varied the type of input to reflect experimental parameters that are important in running studies—sensor location, sensor type, sampling rate, and running speed—and compared the error of inferred signals from each input type.

Results: Sensor location and type did not impact SHRED inference accuracy, while decreasing the sampling rate affected the accuracy of ankle measurements. All ankle acceleration inferences from these models remained below the minimal detectable change threshold of 12.0 m/s2. SHRED models trained and tested at multiple speeds did not accurately infer IMU measurements below this threshold.

Interpretation: SHRED may broaden the scope of motion analysis by expanding access to data with fewer sensors. The data from this study and an instructional Jupyter notebook for training and testing individualized SHRED models are available at [link to GitHub].