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Keith Baar

@musclescience.bsky.social
1.5K followers 82 following 47 posts

Researching ways to improve performance, prevent injuries, and accelerate recovery.

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Reposted by Keith Baar
Manuel F. Navedo @mfnavedo.bsky.social · 21/09/2026
🎙️ Episode 5 of the M&M Lab Podcast is LIVE! 🎉 Our new J Physiol paper, led by Miguel Martín-Aragón Baudel: calcium channels ride microtubules into clusters that drive excessive artery constriction in diabetes & hypertension 🚚⚡ 🎧 navedolab.faculty.ucdavis.edu/podcasts/
navedolab.faculty.ucdavis.edu
Podcasts – Welcome to the M&M Lab
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Keith Baar @musclescience.bsky.social · 27/08/2026
@mcmasteruniversity.bsky.social
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Keith Baar @musclescience.bsky.social · 27/08/2026
I'M AN EDDIE GOLDENBERG RESEARCH CHAIR!!!! www.canada.ca/en/research-... 🧪
canada.ca
Government of Canada announces results for Intake 1 of the Eddie Goldenberg Research Chairs of Canada and Canada Impact+ Emerging Leaders - Canada.ca
Over $541 million in funding supports a generational investment to attract world-leading researchers to Canada
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Keith Baar @musclescience.bsky.social · 23/07/2026
No. Our data actually shows the opposite. To get the best response from a tendon use 50% or less of max force.
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Keith Baar @musclescience.bsky.social · 13/06/2026
🧪 I had a great chat with the two Bens @proteomicsnews.bsky.social and @benneely.com about all things muscle and tendon. Check out our and let me know if you have any questions.
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Keith Baar @musclescience.bsky.social · 22/03/2026
4. The GLP-1RA induced a significant increase in diverse mitochondrial proteins relative to caloric restriction. There is a lot more coming on this topic, but the initial read is that GLP-1RA drugs are good for the liver and muscle.🧪
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Keith Baar @musclescience.bsky.social · 22/03/2026
3. The extra lean mass loss seen in human trials comes from the loss of fat from the liver. Since on DXA the liver is considered lean mass and the liver mass decreased up to 50% with dual agonists, this could explain the 40% lean mass loss number from human trials.🧪
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Keith Baar @musclescience.bsky.social · 22/03/2026
🧪A couple of key findings: 1. GLP-1 agonists (and dual agonists) don't cause significantly more muscle loss than calorie restriction alone. 2. Strength relative to body weight goes up both in mice and humans.
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Keith Baar @musclescience.bsky.social · 22/03/2026
🧪New collaborative paper with the new lab of @henninglanger.bsky.social Weight loss with GLP-1 medicines does not result in a disproportionate loss of muscle mass or function in obese mice and humans: Cell Reports Medicine www.cell.com/cell-reports...
cell.com
Weight loss with GLP-1 medicines does not result in a disproportionate loss of muscle mass or function in obese mice and humans
Langer et al. show that GLP-1 medicines mildly reduce absolute muscle mass but improve relative mass and running performance in mice. Despite similar changes to body weight, GLP-1RA affects the muscle...
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Keith Baar @musclescience.bsky.social · 10/01/2026
So, even though we want these patients to exercise, we need to realize they are much more likely to have serious tendon injuries when they do activity.
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Keith Baar @musclescience.bsky.social · 10/01/2026
This suggests that people with kidney disease have weak tendons, even before they get corticosteroids and other drugs known to weaken them further. In fact, a third of all spontaneous tendon ruptures happen in people with kidney disease.
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Keith Baar @musclescience.bsky.social · 10/01/2026
🧪 In our latest paper, my great student Christopher Hayden fed rats a small amount of adenine, which crystalizes and causes kidney disease. The paper's new finding was that tendon quality decreased significantly in both males and females. physoc.onlinelibrary.wiley.com/doi/10.1113/...
physoc.onlinelibrary.wiley.com
Kidney disease impairs tendon function in rats
Abstract figure legend This study demonstrates for the first time that tendon strength is reduced in a rodent model of chronic kidney disease (8 weeks of 0.25% adenine feeding) and confirms concurren...
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Keith Baar @musclescience.bsky.social · 10/01/2026
If you send her this link she can access the paper. journals.physiology.org/doi/full/10....
journals.physiology.org
Caffeine decreases muscle and tendon protein synthesis and engineered ligament strength in vitro and attenuates adaptation to exercise in mice | Journal of Applied Physiology | American Physiological ...
Caffeine is a well-known stimulant that is widely used to increase alertness and performance. However, there is little information on the effect of chronic caffeine consumption on exercise adaptations...
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Keith Baar @musclescience.bsky.social · 10/01/2026
Honored that our recent paper on how caffeine altered adaptation to exercise was picked for APSselect. 🧪 journals.physiology.org/apsselect
journals.physiology.org
APSselect | APS
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Keith Baar @musclescience.bsky.social · 12/11/2025
🧪Even given these shortcomings, if you are looking to maximize exercise training, limiting caffeine intake may be warranted. Also, using a high caffeine pre-workout supplement may not be the best idea (since more blood, and therefore caffeine, will flow to the muscles you are training).
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Keith Baar @musclescience.bsky.social · 12/11/2025
🧪Before you yell at me, or god forbid stop drinking coffee, realize two things. First, the dose of caffeine is quite high; equivalent to 6+ cups of coffee a day. Second, the effect in vivo (in mice) was quite small.
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Keith Baar @musclescience.bsky.social · 12/11/2025
🧪Our latest paper is out! But, it may upset a lot of people. Caffeine Decreases Muscle and Tendon Protein Synthesis and Engineered Ligament Strength In Vitro and Attenuates Adaptation to Exercise in Mice | Journal of Applied Physiology journals.physiology.org/doi/abs/10.1...
journals.physiology.org
Caffeine Decreases Mu scle and Tendon Protein Synthesis and Engineered Ligament Strength In Vitro and Attenuates Adaptation to Exercise in Mice | Journal of Applied Physiology | American Physiological...
Caffeine is a well-known stimulant that is widely used to increase alertness and performance. However, there is little information on the effect of chronic caffeine consumption on exercise adaptations...
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Keith Baar @musclescience.bsky.social · 09/10/2025
Our latest paper is a quite applied one. It is a readiness questionnaire for rock climbers. We think that this will provide a quantitative measure of the effect of different training methods on finger tendon health and performance. sportsmedicine-open.springeropen.com/articles/10.... 🧪
sportsmedicine-open.springeropen.com
The VISA-C Questionnaire: A Self-Administered Assessment to Measure Finger/Hand/Wrist Pain in Climbers - Sports Medicine - Open
Background Rock climbing places high loads through the hands, wrists, and fingers, leading to high injury rates, with the highest proportion in the fingers. Until now, there has been no attempt to categorize pain in the forearm to assess readiness to train. The purpose of this study was to create a questionnaire, the VISA-C (Victorian Institute of Sports-like Assessment; C for climbing), to measure forearm pain and determine how pain limits training. Methods We asked rock climbers aged 18 to 50 years old, who met the participation criteria and gave consent, to complete a survey containing 8 questions. We analyzed data from climbers who responded to the online questionnaire in the 9-week period between November 5, 2024, and January 8, 2025. We obtained a diverse international sample with English-speaking respondents from 54 countries. We included a supplementary questionnaire to compare the survey results against participant demographics, lifestyle, health, and sport-specific history and habits. Results We analyzed data from 1,110 climbers who completed the form. VISA-C scores were significantly different as a function of pain. The mean VISA-C score of the group with no pain was the highest (83.21/100), lower in the group reporting some pain (72.28/100), and lowest in the most severe group with activity-limiting pain (60.05/100), indicating our questionnaire scales with pain severity. We then used the secondary data gathered on our participants to search for associations between pain or skill level and demographic, health, and training habits. Of these, only blood pressure was associated with differences in VISA-C scores. Conclusions VISA-C score scaled with pain and can be compared broadly across all major demographics. We observed interesting trends in our secondary analyses. Several variables correlated significantly with either VISA-C score or climbing skill level, but none correlated well with both. Many of the variables we compared agreed with existing literature or pointed to novel associations that warrant more investigation.
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Keith Baar @musclescience.bsky.social · 03/09/2025
This should be a great session. Hopefully, we'll get to answer some questions on pros and cons of different models for studying this difficult tissue.
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Keith Baar @musclescience.bsky.social · 14/08/2025
Interested in injury prevention and rehabilitation in baseball? This might be an interesting meeting. I will talk about ways to possibly prevent injury and how to optimize native tissue repair after injury. It should be fun! tinyurl.com/py869z8k
tinyurl.com
Overview - 10th Annual Baseball Sports Medicine: Game-Changing Concepts
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Keith Baar @musclescience.bsky.social · 10/08/2025
🧪 New paper alert! We keep trying to understand muscle-tendon crosstalk. Here we determined whether exosomes could explain why serum after resistance exercise makes bigger stronger tendons. Contrary to our hypothesis, it is not exosomes. The search goes on. www.sciencedirect.com/science/arti...
sciencedirect.com
Exosome enriched serum enhances engineered ligament mechanics and collagen content with no additional benefit of resistance exercise
Following resistance exercise, systemic changes foster improved functionality of tendons and ligaments. Post-exercise, muscle tissue releases exosomes…
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Keith Baar @musclescience.bsky.social · 08/08/2025
Email me at kbaar@ucdavis.edu and I will send it to you
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Keith Baar @musclescience.bsky.social · 23/06/2025
Heartbreaking
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Keith Baar @musclescience.bsky.social · 23/06/2025
That was a textbook Achilles tendon rupture.
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Keith Baar @musclescience.bsky.social · 15/06/2025
And there was no one prouder than @drcontrexin.bsky.social
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Keith Baar @musclescience.bsky.social · 15/06/2025
You were amazing!
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Reposted by Keith Baar
Theanne Griffith, PhD 🇧🇧👩🏽‍🔬🇭🇷 @doctheagrif.bsky.social · 14/06/2025
Today I had the honor of speaking in front of nearly 3000 people today at the Woodland #NoKings rally. WE FEAR NO KING BECAUSE WE DONT HAVE ONE ✊🏾✊🏾✊🏾✊🏾 let’s gooooooo
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Reposted by Keith Baar
Jennifer Z Paxton @drjzp.bsky.social · 14/05/2025
Join our information session for prospective online Anatomical Sciences students! #anatomy #anatomicalsciences #learnonline #onlinelearning #humananatomy
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Reposted by Keith Baar
UC Davis @ucdavis.bsky.social · 15/04/2025
Diabetes affects millions of people, but what if we could better understand how the body naturally regulates blood sugar? Mark Huising is leading NIH-funded research to study how beta cells in the pancreas work together with neighboring cells that secrete hormones that control insulin secretion.
Headshot of Mark Huising against a dark blue background with white text that reads, "From labs to Lives: How Research Funding Solves Real World Problems" and his quote, "[Reduced federal funding] is already stymieing the vital trainee pipeline that U.S. biotech and pharmaceutical companies rely on to maintain the edge in their internationally competitive fields."
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Keith Baar @musclescience.bsky.social · 08/04/2025
Happy Birthday Abigail!
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Keith Baar @musclescience.bsky.social · 19/03/2025
Here is a chance for a young scientist to join one of the most respected labs in the country.
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Keith Baar @musclescience.bsky.social · 07/03/2025
You can do it once a day. For elite athletes trying to come back as fast as possible we might load more. But, for us mere mortals daily is great
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Keith Baar @musclescience.bsky.social · 06/03/2025
Yes. Good luck
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Reposted by Keith Baar
Crystal Rogers, PhD @rogerslabucd.bsky.social · 04/03/2025
Please join us in Sacramento on Friday, March 7 from 12-4 PM to Stand Up For Science!
A flyer for stand up for science Sacramento on March 7 from 12-4.
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Keith Baar @musclescience.bsky.social · 04/03/2025
Outside my expertise. Sorry
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Keith Baar @musclescience.bsky.social · 04/03/2025
I always do isometrics after any other training or activity. If you have active tendinopathies, you may want to add 10 second holds of the specific tendons you are targeting in your sport. Doing a 10s isometric for the Achilles before tennis/pickleball would be strongly advised.
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Keith Baar @musclescience.bsky.social · 04/03/2025
Happy to talk with you about this. Email me at my ucdavis account
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Keith Baar @musclescience.bsky.social · 01/03/2025
That would be great
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Keith Baar @musclescience.bsky.social · 27/02/2025
I got the chance to chat with Tim Ferriss. We talked all things tendon health and performance. Give it a listen and let me know if you have questions. youtu.be/BnFzjcPTSsc?...
youtu.be
Simple Exercises That Can Repair Tendons, Isometrics vs. Eccentrics, and More — Dr. Keith Baar
YouTube video by Tim Ferriss
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Keith Baar @musclescience.bsky.social · 21/02/2025
💪🏽 🤞🏽🤞🏽🤞🏽
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Keith Baar @musclescience.bsky.social · 21/02/2025
🧪 Here is one exercise that we use as the starting point to rehab the high hamstring, one of the hardest tendons to fix. youtu.be/OwdV1sLSsdc?...
youtu.be
IsoHamstring
YouTube video by EXB124 Physiology & Performance
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Keith Baar @musclescience.bsky.social · 08/02/2025
Proud of my University
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Keith Baar @musclescience.bsky.social · 05/02/2025
🧪A nice piece on our research on the UC Davis Health website. The basis for this story is our recent work showing that low intensity long duration (10+ seconds) holds can increase tendon function and strength. Let me know if you have questions or comments. health.ucdavis.edu/news/health-...
health.ucdavis.edu
Lunges, squats and holds for stronger tendons and ligaments
In a Q&A, sports medicine expert Keith Baar discusses the effects of aggressive and isometric exercises on bones, tendons and joints, especially in people who are overweight or recovering from injurie...
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Keith Baar @musclescience.bsky.social · 22/12/2024
I just see my local area.
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Keith Baar @musclescience.bsky.social · 17/12/2024
The full Davis experience. So awesome
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Keith Baar @musclescience.bsky.social · 10/12/2024
🧪If you are interested in the biology of how exercise (load) can drive tendon/ligament adaptation and recovery, please take a look at this deep dive on the topic from my PhD student Kenneth Tam. www.sciencedirect.com/science/arti...
sciencedirect.com
Using load to improve tendon/ligament tissue engineering and develop novel treatments for tendinopathy
Tendon and ligament injuries are highly prevalent but heal poorly, even with proper care. Restoration of native tissue function is complicated by the …
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Keith Baar @musclescience.bsky.social · 04/12/2024
🧪you can also use this link to access the paper. tinyurl.com/4php7yp7
tinyurl.com
Ingestion of a Whey Plus Collagen Protein Blend Increases... : Medicine & Science in Sports & Exercise
illar and muscle connective protein synthesis rates at rest and during early recovery from exercise. Purpose: Ingestion of whey protein increases myofibrillar but not muscle connective protein synthe...
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Keith Baar @musclescience.bsky.social · 04/12/2024
Our latest work on dietary supplements on collagen synthesis in people. In this one, Thorben Aussieker gave people a blend of whey protein and hydrolyzed collagen and labelled phenylalanine incorporation into "matrix" from muscle biopsies increased. Thoughts? doi: 10.1249/MSS.0000000000003596
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Reposted by Keith Baar
Mark Rubin @markrubin.bsky.social · 22/11/2024
Here's a list of 236 Bluesky science feeds and their hashtags! #AcademicSky #PhDSky #EduSky 🧪
docs.google.com
BlueSky Science-Related Feeds
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Keith Baar @musclescience.bsky.social · 19/11/2024
We did a fun video synopsis of the study while I was still in Maastricht. Would love to hear any feedback youtube.com/watch?v=XXrD...
youtube.com
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