Steve Collins
@stevecollins.bsky.social
440 followers 140 following 12 posts
Stanford professor studying biomechanics, robotics, and design. I think a lot about how we design exoskeletons to improve human mobility. Also how we help students become good engineers. #Sci‘Sky. biomechatronics.stanford.edu
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stevecollins.bsky.social
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Is this thing on?

We've had some fun research come out recently -- looking forward to posting on it here soon :-)
stevecollins.bsky.social
A small, lightweight, low-power, low-cost ultrasonic sensor mounted above the prosthetic ankle to detect and avoid tripping hazards. Very cool!
stevecollins.bsky.social
I like the recent push towards more explicit representations of the central nervous system in forward-dynamic musculoskeletal simulations. Here Veerkamp, van der Krogt, Carty, and team optimize reflex gains and supraspinal drive terms to understand toe walking: www.clinbiomech.com/article/S026...
stevecollins.bsky.social
It is possible to measure changes in metabolic rate in the low ones of percents using typical indirect respirometry systems with good experimental design: within-day, within-calibration comparisons; N >= 10-ish; ideally with double-reversal [ABCCBA] presentation for ordering effects.
Reposted by Steve Collins
biomechanthony.bsky.social
Check out our preliminary human-in-the-loop optimization work for powered ankle prostheses. While our algorithm explicitly aimed to increase ankle angle symmetry (and was successful), it also reduced risk factors of hip and knee OA as a side effect.

#biomech

ieeexplore.ieee.org/abstract/doc...
stevecollins.bsky.social
I should add: Keenon Werling is the amazing PhD student and software developer leading the addbiomechanics.org project.
stevecollins.bsky.social
Right on :D. We wanted the web app to be simple and user friendly, but for those who want to roll up their sleeves the entire addbiomechanics.org stack is publicly available:
github.com/keenon/AddBi...

If you go offline, please post your data afterwards.
stevecollins.bsky.social
Coming soon: automatic marker labelling and gap filling...

We hope to create a tool that makes collecting high-quality biomechanics datasets far easier,

AND generate a large public dataset in a consistent format to allow application of modern AI/ML techniques.
stevecollins.bsky.social
The addbiomechanics.org tool is now citable!

Article: journals.plos.org/plosone/arti...

Automatic model scaling for more accurate inverse kinematics and dynamics, in minutes.

Fun collab led by Karen Liu, kicked off by a survey here :-)

Much improved in past few months. Give it a try!
Illustration of addbiomechanics's role in the motion capture and data processing pipeline. Automatic scaling by addbiomechanics takes just a few minutes, compared to about one day for an expert, and results in severalfold lower errors and residual forces and torques.
stevecollins.bsky.social
Hello, Bluesky!

Stoked to get back to the forever-conference :-)

I mostly post on research in biomechanics, wearable robots, human gait, motor learning, and related science.

I avoid politics and science-free self-promotion.

Looking forward to learning from you!