Geoff Power

‘He's a complete inspiration to all of us’: 85-year-old cyclist has no plans to slow down YouTube video by CTV News

youtu.be/9JsQDUnLP9Y?...

The death of Alan Wilson is an enormous loss to comparative biomechanics. He was a visionary who pushed the envelope of technology to enable rigorous measures of movement and physiology of wild animals. He lifted the entire field by pushing us to address big, integrative questions.

Myosin binding protein-C limits strain induced cross-bridge detachment in response to rapid stretch in cardiac and skeletal muscle https://www.biorxiv.org/content/10.64898/2026.03.02.709089v1

We are proud to share that IMSI Co-Director Kiisa Nishikawa has been named the recipient of the 2026 SEB Bidder Lecture Award by the Society for Experimental Biology.

Please join us in congratulating her on this outstanding achievement.

#SEB2026 #ExperimentalBiology #ScientificAchievement #STEM

Two funded PhD positions investigating the evolution of sarcomeres @ibdm.bsky.social in @biancah0406.bsky.social and our lab, together with @cnidevo.bsky.social - Interested to explore how similar or different Jellyfish sarcomeres are to Drosophila or human ones?
www.ibdm.univ-amu.fr/ibdm_job/2-a...

💪 NEW VIDEO:
Flying over the A-band of an atomic-scale model of a vertebrate muscle sarcomere. Let's explore the molecular mechanics that make your muscles work.

Rendered using @bradyajohnston.bsky.social 's molecular nodes

Model based on the incredible work of the @raunser-lab.bsky.social lab

J. Greig Inglis & Hélio V. Cabral offer this #Perspective unravelling the complexities of neuromuscular function in females throughout the adult lifespan based on the work of O'Bryan et al. (2026) ✍️ 📜

🔗 physoc.onlinelibrary.wiley.com/doi/10.1113/...

Review: @hesselanthony.bsky.social @crand22.bsky.social, Nguyen et al. provide useful tips and tricks for all those beginning their journey into permeabilized muscle fiber mechanics. rupress.org/jgp/article/...

#Myofilaments #SkeletalMuscle #CardiacMuscle

Assessing muscle morphology and mechanics: one protocol does not fit all - Journal of Muscle Research and Cell Motility Journal of Muscle Research and Cell Motility -

📑‼️ New commentary out today from Roger on the importance of experimental design and best practice for muscle mechanics experiments!

Physiological Reports <em>Physiological Reports</em> is a peer-reviewed, open access journal that publishes papers across all areas of basic and translational physiology and allied disciplines.

Physiological Reports is pleased to announce new Editorial Board Members! Check out physoc.onlinelibrary.wiley.com/hub/journal/...
for the current Editorial Board.
@physoc.bsky.social
@apspublications.bsky.social

Interested in moving to Canada? 🇨🇦🍁

Brock is recruiting for an Impact+ research chair in Human Mobility and Wearable Technology!

This is an amazing opportunity for international scholars looking to come to Canada. Please reach out for more details.

brocku.wd3.myworkdayjobs.com/brocku_caree...

I am excited to start at #UofG this July. I look forward to contributing to research and helping to build a strong, collaborative scientific community.

Exterior view of a modern university building at dusk, showcasing its glass facade and illuminated interior.

For the third year in a row, #UofG has been ranked one of the top 150 universities in the world for life sciences, according to the 2026 Times Higher Education (THE) World University Rankings by subject, while also rising to fifth in Canada.

Learn more: uoguel.ph/3u1wt

📢 Call for papers!

Submit your work to the J Biomech Virtual Special Issue:
“Muscle–tendon mechanics across species”

We welcome studies bridging human & comparative biomechanics, including animal and bio-inspired/robotic models.

More info: www.sciencedirect.com/special-issu...

review.jove.com/files/ftp_up...

Some of the stuff we're working on

Older woman wearing teal and pink headphones holding a pink water bottle outdoors in a sunny park.

Aging muscles and tendons are less efficient (anyone of a certain age knows that!). New research shows older adults use more energy for basic leg/joint movements than younger people. Read more in APS Publications Journal of Applied Physiology: https://ow.ly/OriN50Y0cCI #ArticlesInPress 🧪
📷: iStock

Older adults produce joint moments less economically than young adults | Journal of Applied Physiology | American Physiological Society Older adults expend more metabolic energy than young adults during walking (worse walking economy). Amid the numerous physiological changes that accompany advanced aging, the mechanisms governing the age-related decline in walking economy remain unestablished. Due to conflicting evidence, we studied whether older adults produce lower-limb joint moments less economically than young adults, independent of an age-related difference in muscle co activation. Eight older adults (71.6 ± 6.0 years) and 13 young adults (23.1 ± 4.7 years) repeatedly produced hip and ankle moment cycles on a dynamometer following visual feedback and an audible metronome. We instructed participants to produce moments with peak net torque values of 20 and 30 Nm at a 0.75 Hz cycle frequency and a 0.5 duty cycle. Overall, young and older adults did not co-activate their antagonist muscles differently during the moment production trials. At the hip, older adults expended more metabolic power than young adults despite producing lower moment amplitudes. At the ankle, older adults expended more metabolic power than young adults while producing non-different moment production cycles. Because older adults produced lower-limb joint moments less economically than young adults, interventions aimed at prolonging youthful walking economy into advanced age may need to directly address changing muscle-tendon unit physiology.

doi.org/10.1152/japp...

😃 In a new article published in J Biomech, Wasicki et al. show that the RFD is predominantly related to myosin properties, and interspecies differences in the twitch RFD of S and FR MUs have a biomechanical basis.

👀https://buff.ly/sLezKNo

A monetary reward prolongs cycling time-to-task failure without altering performance fatigability and perceptual responses | American Journal of Physiology-Regulatory, Integrative and Comparative Phys... Purpose: This study aimed to determine the effects of an unexpected monetary reward on time-to-task failure (TTF) as well as on measures of performance and perceptual fatigability in healthy young adu...

journals.physiology.org/doi/abs/10.1...

A monetary reward prolongs cycling time-to-task failure - Cool paper, explains why "cash preems" laps in a cycling race are so epic

FEBS Press Accounting for myofiber shape reduces apparent age-related declines in muscle capillarization by ~10–25% and fiber type differences by ~25–45%. Shape-sensitive metrics may prevent overestimation of c...

Capillary differences with age and muscle fiber type are attenuated by accounting for fiber shape
febs.onlinelibrary.wiley.com/doi/10.1111/...

🛠️ Keep your research moving! We’ve released a new Tech Cast showing you exactly how to repair your ASI 400 Series force transducer tube in-lab. Katherine and Terry share step-by-step guidance to help minimize downtime and avoid returns.

Watch here 👉 aurorascientific.com/tube-repair-...

January 2026 – New Call for Papers is open!
“#Ageing, #HealthSpan and #Lifespan: Physiological Aspects”
Find out more and submit at
physoc.onlinelibrary.wiley.com/hub/journal/...

@physoc.bsky.social
@apspublications.bsky.social
#Physiology

The first Blue Jay Mummer you've seen this year! (Or ever)

And now, for the top Muscle Paper of 2025 as voted by all of you. After 70+ votes, the winner is the following: #1. Moreno-Justicia et al., Nat. Comms., Human skeletal muscle fiber heterogeneity beyond myosin heavy chains. #Myoblue tinyurl.com/38v8v2bk

A new Experimental Physiology study asks whether “silly walking” — flailing limbs in gloriously inefficient ways — could help prevent obesity, boost cardiorespiratory fitness, and even improve public health.

Explore the science behind the silliness: buff.ly/vNykBBf

Merry Christmas 🎅 🎄

Dr Mashouri did an excellent job advancing women's health through research & public engagement.

Here are the core studies for her PhD👇🏼. Email for PDF copies (glen.pyle@impart.team).

www.maturitas.org/article/S037...

physoc.onlinelibrary.wiley.com/doi/10.1113/...

cdnsciencepub.com/doi/10.1139/...

The effect of gradual ovarian failure on dynamic muscle function and the role of high-intensity interval training on mitigating impairments - PubMed Skeletal muscle contractile function is impaired in menopause and exercise may mitigate this decline. We used the 4-vinylcyclohexene diepoxide (VCD) model of menopause to investigate the effects of gradual ovarian failure on skeletal muscle contractile function and whether high-intensity interval tr …

Here's another to add to the list: pubmed.ncbi.nlm.nih.gov/37661923/

Congratulations Dr. Mashouri (Paris) 🥳 🎉 🪅 🎊

Paris led a tremendously productive line of work investigating ovarian failure on muscle function in colab with @glenpyle.bsky.social

The sarcomere is the elementary contractile unit of muscle, driving all volunatry motion and heart beat in animals. How these “cytoskeletal crystals” self-assembly is only partly understood.

🏋️Our review on how to build muscle is out in
@biophysicalreviews.bsky.social: The Physical Basis of Sarcomere Assembly. We critically review past models and discuss a new mechanism that unifies past ideas, suggesting tension-driven self-organization. With
@frankschnorrer.bsky.social & Kolley-Köchel