Stuart Phillips (he/him)
@mackinprof
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Dad, Husband, Distinguished Univ Professor, tier 1 @CRC_CRC, @McMasterU; opinions mine. Scholar: https://t.co/9FZmrkltUw. Linktree: https://t.co/6w6NWx9M6p
Hamilton, Ontario
Joined March 2009
The best skeletal muscle and exercise adaptations talks I’ve heard in years in Jyvaskyla by @HornbergerLab @AbigailMackey1 @MarcasBamman @AhtiainenJuha @JYUBiolPA @mackinprof (@BradSchoenfeld & Phil Atherton tomorrow. 🍿)
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TY @TonyBoutagy for highlighting the work of @AlyshaDSouza Dominique Greyvenstein James Newbold @mackinprof Institute discussing protein needs for female athletes written by those who do THE research- instead of those who make recommendations based on opinions over evidence
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For those seeking effective way to monitor physical performance through life's 2nd half, we updated the Personal Performance Quotient following interview w/ @mackinprof for upcoming pod episode. Here's new version of the readily avail self-assessment:
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Reality check on what protein CAN do and actually does (better stats and analysis than the Morton meta): https://t.co/aOPsOOIkSG NOTES: FFM and lean mass are NOT muscle mass. Note that strength does not change even when lean mass does (is it even muscle?)
onlinelibrary.wiley.com
We performed a systematic review, meta-analysis, and meta-regression to determine if increasing daily protein ingestion contributes to gaining lean body mass (LBM), muscle strength, and physical/fu...
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And when I say real, I mean, backed and driven by data! I've championed the 'protein won't kill you' message, too, but there's a real limit to the benefits. Moving beyond hyperbole would serve everybody. https://t.co/v87HGKBrLF
https://t.co/xAJxkFnGUB
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Many are having a heyday preaching BIG protein without data, nuance, or understanding of basic principles. I'd invite @BioLayne, @foundmyfitness, @PeterAttiaMD, @hubermanlab to sit down and have a REAL discussion about protein and muscle anytime!
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I've spent 30 years working in this area, and we've generated lots (and lots) of data on protein requirements and hypertrophy-related requirements. The RDA isn't cutting it, but anything beyond 1.6 is a total waste of time (and money).
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To be clear, the 27% added is lean mass, that's not muscle mass, and that added mass is 300g (less than a pound). So I think @fmfclips that I don't mean to be disingenuous, but @PeterAttiaMD's take on 'how much' protein is good is overblown!
Credits to @mackinprof for the research Watch the full interview on @PeterAttiaMD's podcast here: https://t.co/MO5KNJpdpp
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Had a great time talking with @mackinprof about protein, muscle health, and longevity. Apple: https://t.co/HUrwr4DXHu Spotify: https://t.co/B9u7X62DlY YouTube:
podcasts.apple.com
Podcast Episode · The Ty Beal Show · 10/28/2025 · 1h 7m
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Physical activity is directly associated with total energy expenditure without evidence of constraint or compensation https://t.co/KXhf96Qgez
#verygood In summary, our findings were inconsistent with the constrained or compensatory models of PA effects on TEE but rather
pnas.org
The prevailing linear model of physical activity (PA) and total energy expenditure (TEE) has been challenged by models that predict an upper limit ...
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Glycolytic metabolism and biomass production from glucose in human skeletal muscle growth | American Journal of Physiology-Cell Physiology | American Physiological Society
journals.physiology.org
Skeletal muscle is the main consumer of glucose after a mixed meal, and resistance exercise further increases muscle glucose uptake. Emerging evidence suggests that glucose uptake in muscles is not...
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Amazing conference with some great speakers! Come and join us in Jyväskylä
Conference: Inter-individual variation in exercise. Please join! The speakers include e.g. @mackinprof @AbigailMackey1 @MarcasBamman @HornbergerLab @DrMikeRoberts @BradSchoenfeld @MarkusPerola G Nader, E Sillanpää, A Hecksteden, W Derave, P Atherton! https://t.co/eT98o2ZKkh
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📣 Make Balance Training a Blast! Watch my rockstar 79-year-young online client loving ❤️the wall ball rebounds with a glow-in-the-dark puffer ball—facing forward and sideways. ✨ Hand-eye coordination 🧠 Reaction time (fall prevention) 💪🏾 Confidence in motion 😂 Movement +
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As we age, many of us begin to think more seriously about how to maintain our health, independence, and quality of life. In a recent webinar, @mackinprof shared compelling insights into how muscle, strength, and protein play a vital role in aging well https://t.co/HjPs5FbaZ6
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I was asked on a conference panel what characteristic of my patients predicts weight loss response with a GLP-1 med My answer: when they know the medicine is a tool to help them do the things they couldn’t do before the medicine (eg eat a lower calorie high nutrient diet) as
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🚨My voice is not a threat to my country—it is a defense of it. I’m a citizen, small business owner, volunteer poll worker, and a first-generation 🇺🇸🇩🇴Dominican American. I’d rather focus on health and fitness—but I love my country too much to stay silent. 📣When I speak out
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Everywhere you look, people are talking about “biological age.” They test telomeres, methylation patterns, mitochondrial markers — and promise to tell you how “old” your body really is. This drives me nuts.. LOL. The framing is wrong. The control group isn’t the average
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💪 Training to failure 🥵 – not always is the answer! A new study found that training to failure (0–1 RIR) vs. leaving 4–6 reps in reserve led to similar gains in muscle size and strength 🏋️♂️ 👉 You don’t need to die every set to grow 💪 https://t.co/KwTPB7qSoH
physoc.onlinelibrary.wiley.com
Limited data exist examining how resistance training to failure affects applied outcomes and single motor unit characteristics in previously trained individuals. Here, we show that training near...
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In this review, we describe the pathophysiology of sarcopenia and cachexia, explore their definitions in the context of geriatric oncology, and examine assessment methods used in clinical practice. Great job Makis. @lsuchse @acsmnews @skppowers
https://t.co/LdLCtSohTh
link.springer.com
Drugs & Aging - Sarcopenia and cachexia are two common and overlapping but distinct muscle wasting syndromes that predict adverse outcomes and undermine quality of life among older adults with...
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