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varun joshi

@v9joshi.bsky.social
165 followers 176 following 5 posts

90% reSKeets(?) Locomotion modeling, simulation and control.

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Reposted by varun joshi
Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 06/04/2026
We pack a handful of folks into a tin can loaded with explosives. The computers are running Windows and the toilet is malfunctioning. We hurl them at a distant rock. Everything about where they are is deadly. And it is sublimely beautiful, one of the greatest things we’ve done as a species. #Artemis
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Minas Karamanis @minaskar.bsky.social · 30/03/2026
Hey, I wrote a thing about AI in astrophysics ergosphere.blog/posts/the-ma...
ergosphere.blog
The machines are fine. I'm worried about us.
On AI agents, grunt work, and the part of science that isn't replaceable.
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Neelima Sharma @neelimasharma.bsky.social · 03/02/2026
Why is it that small animals like insects have a landspace body plan when viewed head-on, but larger animals like elephants are taller than wide? With @m-v.bsky.social, we find out in our new preprint titled 'Size and shape of terrestrial animals' - arxiv.org/html/2602.00...
an insect, a bird, and an elephant visualized with unit height scaling. insect is landscape shaped and the elephant is portrait shaped
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Journal of Biomechanics @jbiomech.bsky.social · 29/04/2025
😃 A new article published in J Biomech by Moissenet et al. reviews and aggregates available datasets to establish Spartacus, a comprehensive reference for normal shoulder girdle kinematics. 👀 buff.ly/hQAMKYZ #BiomechSky
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Dynamic Walking 25 @dynamicwalking25.bsky.social · 29/04/2025
Tomorrow is the final day to submit your abstracts for Dynamic Walking 2025. If you haven't submitted yet, don't walk, RUN! 🏃‍♀️👍
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ASB Postdoc Affinity Group @asb-postdocs.bsky.social · 28/04/2025
Hello, biomechanics community! Are you a postdoc looking for a place to connect with fellow postdocs, network, and attend professional development events? Fill out this link to get involved with the American Society of Biomechanics Postdoc Affinity Group: docs.google.com/forms/d/e/1F...
forms.gle
Interest in the ASB Postdoc Affinity Group 2025-26
Please input your information for your interest in the postdoc affinity group through the American Society of Biomechanics. This group provides a place for postdocs to come together and have conversat...
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Ritu Raman @rituraman.bsky.social · 29/04/2025
Super cool new postdoctoral fellowship opportunity at MIT via the HEALS initiative. Biswas Fellows receive *4 years* of funding to pursue independent research with *any* MIT faculty member! Please share widely with the trainees in your life! heals.mit.edu/biswas-fello...
heals.mit.edu
Biswas Fellows – MIT HEALS
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Journal of Open Source Software @joss-openjournals.bsky.social · 28/04/2025
Just published in JOSS: 'MocoExtendProblem: Interface Between OpenSim and MATLAB for Rapidly Developing Direct Collocation Goals in Moco' doi.org/10.21105/joss.07110
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Journal of Biomechanics @jbiomech.bsky.social · 04/04/2025
😃 A new article published in J Biomech by Crossley et al indicates that electromyogram-informed modelling is a valid computational approach to estimate knee and hip biomechanics during standard seated ergometer cycling. 👀 buff.ly/EfKDSFl #BiomechSky
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varun joshi @v9joshi.bsky.social · 28/03/2025
Now peer reviewed and out in IEEE TNSRE doi.org/10.1109/TNSRE.2025.3549641
doi.org
Ankle Exoskeletons May Hinder Standing Balance in Simple Models of Older and Younger Adults
Humans rely on ankle torque to maintain standing balance, particularly in the presence of small to moderate perturbations. Reductions in maximum torque (MT) production and maximum rate of torque devel...
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Reposted by varun joshi
Meghan E. Huber @mehuber.bsky.social · 11/03/2025
Postdoc opportunity to do digital twin research for human and humanoid agile locomotion with myself, Wouter Hoogkamer @umill.bsky.social and Donghyun Kim! See forms.gle/FRFtLNiY7j3z... for more info and to apply by 3/19.
forms.gle
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Monica Daley @birdbiomech.bsky.social · 25/01/2025
A reminder that registration is open for this CNB Muscle-tendon mechanics satellite meeting! Students can apply for the ISB Technical Meeting grant for $500USD to attend isbweb.org/students/28-... (see grant #5: CNB isn't listed because it is a new group, but the funding does apply)
isbweb.org
Student Grants - International Society of Biomechanics
International Society of Biomechanics
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Felipe Carpes @felipecarpes.bsky.social · 27/01/2025
Important Announcement! The deadline for abstract submissions to the ISB Congress 2025 has been extended to February 14th, 2025! Spread the word—and let’s get those abstracts submitted! www.isb2025.com
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Journal of Biomechanics @jbiomech.bsky.social · 15/01/2025
😃New article published in J Biomech! "Whole Body Angular Momentum Characterizes Reactive Balance Adaptations and Perturbation Intensity", by Adam et al. 👀 www.sciencedirect.com/science/arti... #journalofbiomechanics #BiomechSky
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Journal of Experimental Biology @jexpbiol.bsky.social · 02/01/2025
Find out more about JEB's new article type, Theory & Modelling, allowing scientists to publish research leveraging modelling and theory to address new biological questions, in Sheila Patek, Monica Daley, Matt McHenry & Sanjay Sane's Editorial journals.biologists.com/jeb/article/...
Screen shot of the top of the first page of the Journal of Experimental Biology Editorial, JEB launches a new article type for theory and modelling studies, written by S. N. Patek, Monica A. Daley, Matthew McHenry and Sanjay Sane. The first sentence of the Editorial reads: JEB recently launched a new article type called Theory & Modelling.
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He (Helen) Huang @helenhuang.bsky.social · 22/12/2024
New Year's resolutions: read more, think more, and no email (though that's impossible).
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Nadia Dominici @nad-dom.bsky.social · 18/12/2024
We are looking for a postdoctoral researcher to join the META MUSEUM project: Emotion and Biomarkers. This interdisciplinary project focuses on understanding emotion-induced bodily and neurophysiological biomarkers through experimental interventions. werkenbij.vu.nl/vacatures/po...
werkenbij.vu.nl
Vacature — post-doc on META MUSEUM: Emotion and Biomarkers
Are you fascinated by the intersection of emotions, neuroscience, and human experiences? Join our innovative research team as a postdoc and contribute to cutting-edge investigations into emotion-induc...
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Sjoerd Bruijn @smbruijn.bsky.social · 21/12/2024
Just in time for your Christmas reading list: new preprint with Yang Geng and @jvandieen.bsky.social: “ Upright stance is controlled close to critical stability across different postures” (www.biorxiv.org/content/10.1...) feedback welcome!
biorxiv.org
Upright stance is controlled close to critical stability across different postures
Feedback stabilization of upright standing postures should be reflected by a time-lagged relationship between the ground reaction force (GRF) and the center of mass (COM) state. In this study, we prop...
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Brian Umberger @brianumberger.bsky.social · 20/12/2024
Bipedal running simulations in Australopithecus afarensis!
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Pierre Puchaud @ipuch.bsky.social · 20/12/2024
Over the years, I’ve developed a unique skill: commenting on iterations of IPOPT like it’s my favorite sports team ⚽️🥅🏀 « And it went out the recovery mode !»
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Journal of Biomechanics @jbiomech.bsky.social · 18/12/2024
😃New article published in J Biomech! "Modeling implications of the relationship between active and passive skeletal muscle mechanical properties", by Lieber et al. 👀 www.sciencedirect.com/science/arti... #journalofbiomechanics #BiomechSky
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Brian Umberger @brianumberger.bsky.social · 15/12/2024
Congrats to (skyless) Matt Mulligan! He is the first person in the 207-year history of the University of Michigan to graduate with a joint PhD in Movement Science & Scientific Computing! Now Matt is in a cool computational postdoc on aging & movement with Eline van der Kruk at TU Delft #biomechanics
Matt Mulligan and Brian Umberger in academic regalia at the University of Michigan winter commencement.
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Andy Judge @andyjudge24.bsky.social · 14/12/2024
Abstract deadline to be considered for an oral presentation at the 2025 Advances in Skeletal Muscle Biology Conference is tomorrow (Dec 15) ⏱️✍️ @myoblue.bsky.social
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Owen Beck @owen1beck.bsky.social · 13/12/2024
Center of mass states render multi-joint torques throughout standing balance recovery journals.physiology.org/doi/abs/10.1... @kjakubowski.bsky.social @lenating.bsky.social
journals.physiology.org
Center of mass states render multi-joint torques throughout standing balance recovery | Journal of Neurophysiology
Successful reactive balance control requires coordinated modulation of hip, knee, and ankle torques. Stabilizing joint torques arise from neurally-mediated feedforward tonic muscle activation that mod...
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Stephen Piazza @stephenpiazza.bsky.social · 13/12/2024
My PSU colleagues Anne Martin and Meghan Vidt will co-chair the 2025 American Society of Biomechanics East Coast Meeting – ASB East – on Penn State’s University Park campus March 28-29, 2025. Abstracts are due by February 7, 2025. For more information, please visit sites.psu.edu/asbeast2025/
sites.psu.edu
ASB East 2025
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Biomechanics Publications @pub.biomech.dev · 10/12/2024
Latest article from Journal of Biomechanics: Modeling implications of the relationship between active and passive skeletal muscle mechanical properties doi.org/10.1016/j.jbiomech.2024.112… #BiomechSky
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Chris Clark @selasphorus1.bsky.social · 09/12/2024
POSTDOC announcement! I am hiring a postdoc to study owl flight biomechanics. I will be at SICB. Please email me for the full advertisement, screenshot below. Please retweet! Ideal candidate has research experience with wild birds, 3D kinematics and acoustics. #SICB2025
A screenshot of part of the advertisement, please email me at cclark@ucr.edu for the full advertisement
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Anne Koelewijn @drannek.bsky.social · 09/12/2024
We have open sourced our simulation toolbox: github.com/mad-lab-fau/.... We have been using it for many years in many publications, and I’m very happy that it is now available to all! Many thanks to all coauthors and to adidas for their support in the development and release. Happy simulating!
github.com
GitHub - mad-lab-fau/BioMAC-Sim-Toolbox: The biomechanical motion analysis and creation (BioMAC) simulation toolbox can be used to analyse human movement, with a focus on gait simulations
The biomechanical motion analysis and creation (BioMAC) simulation toolbox can be used to analyse human movement, with a focus on gait simulations - GitHub - mad-lab-fau/BioMAC-Sim-Toolbox: The bi...
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Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 06/12/2024
Entomologists, I need your help. Metallic green sweat bees. Do they also lick the sweat off animals like other sweat bees? I've never seen them lick sweat off me like with the little black ones, but idk why they wouldn't. @bugeric.bsky.social @amanatiala.bsky.social
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 05/12/2024
Are you a gadget-handy person who likes science, especially cutting-edge super-techy stuff involving figuring out how to measure things in animals? We have a part-time Research Engineer post open in the Structure & Motion Lab (not my employee). jobs.rvc.ac.uk/Vacancy.aspx...
jobs.rvc.ac.uk
Job Opportunity at the RVC: Research Engineer
Research Engineer (instrumentation)We are looking for a part-time research engineer for 2 days per week (14 hours) to join the Structure and Motion Laboratory, a multi-disciplinary research group inve...
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Monica Daley @birdbiomech.bsky.social · 04/12/2024
A fun collaborative paper out in Nature on RAVEN: a bird-inspired robot that uses it’s legs to propel flight take off. An example of how robots can test ideas about integrated function in animals. www.nature.com/articles/s41...
nature.com
Fast ground-to-air transition with avian-inspired multifunctional legs - Nature
A bird-inspired robot that can jump into flight, walk on the ground and hop over obstacles shows that jumping for take-off is more energy efficient than taking off without the jump.
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Zach Weinersmith @zachweinersmith.bsky.social · 28/11/2024
So, today the 10 year old got interested in scutoids due to a Vi Hart video, and that led to looking into all sorts of weird shapes, and HOLY SHIT how come nobody told me about trajectoids? www.youtube.com/watch?v=VbuX...
youtube.com
“Solid-body trajectoids shaped to roll along desired pathways”
YouTube video by NCCR SwissMAP
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Meghan E. Huber @mehuber.bsky.social · 26/11/2024
I am actively recruiting several PhD students to join my lab at UMass Amherst (you can apply as ME, BME, or CICS) to work on wearable robotics for walking/running and neuromotor control (primitives for action generation and perception)! Shoot me an email if you're interested!
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Katherine Boyer @katherineaboyer.bsky.social · 25/11/2024
New paper with alert. We (J. Hafer and S. Roelker) looked to see if muscle coordination quantified by a muscle modules analysis differed with a prolonged walk by muscle fatigue. www.sciencedirect.com/science/arti...
sciencedirect.com
Changes in lower extremity muscle coordination over a 30-minute walk do not differ by muscle fatigability
Muscle fatigue, the transient decrease in muscle power, leads to low levels of physical activity and an inability to perform activities of daily livin…
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Peter Fino @pcfino.bsky.social · 19/11/2024
A while ago, we got interested in why we choose to move the way we do. Pulling from behavioral economics, we started to explore how assessments of risk influence behavior. Here, we experimentally tested whether compensatory changes in balance and gait are aligned with these risk models.
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Emily Klinkman @emilyklinkman.bsky.social · 18/11/2024
Do any of my biomechanics/robotics followers use Biometrics SG110/SG150 goniometers? If so, would you be willing to chat about how you account for low signal-to-noise ratio w/small signal output? TY!
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psudingwelllab.bsky.social @psudingwelllab.bsky.social · 18/11/2024
Recruiting Ph.D. Students!! The Penn State Locomotor Control (LoCo) Lab is actively recruiting highly qualified graduate students interested in starting in Fall (Aug) 2025 to study the biodynamics and motor control of human walking.
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Anthony A. Gatti @aagatti.bsky.social · 16/11/2024
Hey all! I started a biomechanics starter pack. Let me know who I missed so I can add them and follow them myself! And check in to see who you might want to follow. go.bsky.app/5maK8X6
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Felipe Carpes @felipecarpes.bsky.social · 15/11/2024
Journal of Applied Biomechanics is looking for a deputy editor to work with Katherine Boyer. Take a look at the recent announcement: journals.humankinetics.com/fileasset/JA...
journals.humankinetics.com
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varun joshi @v9joshi.bsky.social · 17/08/2024
Read our new pre-print! Daphna Raz combined rigorous reachability math with clever work-energy analysis to better understand how ankle exos could *HINDER* standing balance. arxiv.org/abs/2408.05418 #BiomechSky
arxiv.org
Ankle Exoskeletons May Hinder Standing Balance in Simple Models of...
Humans rely on ankle torque to maintain standing balance, particularly in the presence of small to moderate perturbations. Reductions in maximum torque (MT) production and maximum rate of torque...
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Jeroen Aeles @aelesj.bsky.social · 07/05/2024
Has anyone who uses #Biodex analog data experienced so much noise in the torque? Any suggestions where to begin reducing the noise are more than welcome (already tried several things, non successful). (Using Biodex 4 Pro) Retweets appreciated! #BiomechSky
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Thomas Geijtenbeek @tgeijten.bsky.social · 03/05/2024
Tripping and slipping simulation #Hyfydy #SCONE #BiomechSky youtu.be/MudlYgzAxroI
youtu.be
Tripping and Slipping Simulation
Simulated using Hyfydy -- https://hyfydy.com Video created with SCONE -- https://scone.software
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Anne Koelewijn @drannek.bsky.social · 18/03/2024
New preprint! We trained a neural network on dynamic muscle force recordings and showed that it can better estimate muscle forces than a Hill model. This is a first step towards more accurate muscle force estimations in human simulations as well, but a long ways to go. #biomechsky
biorxiv.org
Neural Networks Estimate Muscle Force in Dynamic Conditions Better than Hill-type Muscle Models
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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