Electromyography

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

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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.

CR DeVol, SR Shrivastav, VM Landrum, KF Bjornson, D Roge, CT Moritz, KM Steele (2025) “Effects of spinal stimulation and short-burst treadmill training on gait biomechanics in children with cerebral palsy”

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Journal article in Gait & Posture

Children with cerebral palsy (CP) have an injury to the central nervous system around the time of birth that affects the development of the brain and spinal cord. This injury leads to changes in gait neuromechanics, including muscle activity and joint kinematics. Transcutaneous spinal cord stimulation (tSCS) is a novel neuromodulation technique that may improve movement and coordination in children with CP when paired with targeted physical therapy.

Example kinematics and muscles activity at each assessment timepoint for P03’s more-affected side. A) Sagittal-plane hip, knee, and ankle kinematics over the gait cycle. Horizontal colored lines indicate where there were significant changes in kinematics over each phase of the study based on statistical parametric mapping (p Aim: How does the combination of tSCS and short-burst interval locomotor treadmill training (SBLTT) affect individual gait neuromechanics in children with CP?

Methods: Four children with CP (4–13 years old), received 24 sessions each of SBLTT only and SBLTT with tSCS (tSCS+SBLTT). Clinical assessments of spasticity and passive range of motion (PROM), as well as biomechanical assessments of joint kinematics, musculotendon lengths, and muscle activity were recorded during overground, barefoot walking. Assessments were taken before and after each intervention, and 8-weeks later.

Results: The combination of tSCS+SBLTT led to greater increases in hip and knee extension than SBLTT only for three participants. Three children also became more plantarflexed at the ankle during stance after tSCS+SBLTT compared to SBLTT only. While tSCS+SBLTT reduced spasticity, these changes were only weakly correlated with changes in musculotendon lengths during gait or PROM, with the largest correlation between change in gastrocnemius operating musculotendon length during fast walking and gastrocnemius spasticity (R2 = 0.26) and change in plantarflexor PROM and gastrocnemius spasticity (R2 = 0.23).

Interpretation: Children with CP used a more upright, less crouched posture during gait after tSCS+SBLTT. Large reductions in spasticity after tSCS+SBLTT were only weakly correlated with changes in kinematics and PROM. Understanding the mechanisms by which tSCS may affect gait for children with CP is critical to optimize and inform the use of tSCS for clinical care.

Engineering Discovery Days 2024

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The University of Washington College of Engineering re-launched Engineering Discovery Days this spring. Discovery Days has been a signature outreach event for over 100 years, providing fun and enriching hands-on experiences for students, teachers, and families from across the state. Discovery Days is also an opportunity for our community of UW Engineering students, staff, and faculty to share their passion for engineering with the next generation of innovators.

The UW Biomechanics Faculty put together an exhibit titled “Biomechanics Assemble! From Exoskeletons to Cytoskeletons” with the goal of demonstrating how we study movement and forces in humans and cells at UW.

Two people stand outside, one with a robotic leg, holding a sign reading, "The Human Body: The Ultimate Machine." Both wear "Engineering" shirts. Trees and an event tent are in the background.
A person wearing an exoskeleton suit stands facing a small group of people in a room with various individuals and equipment.
Two people engaged in a discussion while one is wearing a 3D printed prosthetic hand.
Two people fist bumping. One person is wearing a 3D printed prosthetic hand.
A person in a lab wearing an exoskeleton, ready to teach students about biomechanics research.
A woman instructing a child how to use a 3D printed prosthetic hand to pick up a small bottle
A group of students standing around while one is wearing a 3D printed prosthetic hand
A group of students standing around while one is wearing a 3D printed prosthetic hand

The Steele Lab along with the Ingraham Lab hosted two booths. Each booth featured hand-on activities and games for students to engage with.

The first booth features an ensemble of exoskeletons and assistive devices, including the Biomotum Spark and 3D printed prosthetic hands.

The second booth featured two games for students to engage with, including “Myodino” using Delsys EMG sensors, and “UltraLeap Ring Sorting” VR game using the UltraLeap hand tracking technology.

In this lab, we think the human body is “The Ultimate Machine” and we were so excited to share HOW we study the human body at Discovery Days 2024.

A woman showing a young student how to play the game "MyoDino" by activating forearm muscles
A man placing an EMG sensor on the forearm of a young student
A small group of people standing around watching a student play MyoDino on a laptop
A small group of students standing around looking at a laptop as a woman explains how to play the "UltraLeap Ring Sorting"
A small group of students standing a laptop while a student plays the "UltraLeap Ring Sorting"
A small group of students standing a laptop while a person wearing an exoskeleton plays the "UltraLeap Ring Sorting"

National Biomechanics Day 2024

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Last week the Steele Lab celebrated National Biomechanics Day (NBD) on April 3, 2024 at the VA Puget Sound. Mia Hoffman, Sasha Portnova, and Katie Landwehr, 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.

A group of five people posing for a photo

NBD is a world-wide celebration of Biomechanics in its many forms for high school students and teachers. Steele Lab PhD student Mia Hoffman, and Ingraham Lab PhD student Annika Pfister were recently awarded a $1000 grant from the American Society of Biomechanics and National Biomechanics Day to host an outreach event for high school students focused on disability biomechanics.

Mia and Katie hosted a station on “Switch-Adapted Toys & Accessible Design”

Two women (Mia and Katie) standing in front of a wall with pictures and holding adaptive toys and DIY switches.
A group of people standing around a table of DIY switches and switch adapted toys
A group of people standing around a table of DIY switches and playing games on an iPad

Sasha, Annika, and Zijie hosted a station on “Myodino: Activate your Muscles”

A group of people holding a sign that says "MyoDino Scoreboard"
A group of people standing around a table with computers. One person is wearing an EMG sensor on their forearm
A group of people standing around a table with computers. One person is wearing an EMG sensor on their forearm