What's the right amount of time for resistance training?
A new study supports 90-120 minutes/week across multiple outcomes, which plateaus beyond that for lack of additional benefit
From 30-year follow-up of ~150,000 participants
https://t.co/mUy9o4HkbH
Our new paper in SCJ reframes LTAD as Long Term Activity Development - a more inclusive approach that prioritizes movement competence, strength, confidence and lifelong participation in physical activity.
Open access: https://t.co/V6AmCeIRMR
Med News: A major meta-analysis has found that digital media use, particularly social media, is consistently linked to worse youth mental health and development.
https://t.co/fz3Mtfn2DS
Med News: A major meta-analysis has found that digital media use, particularly social media, is consistently linked to worse youth mental health and development.
https://t.co/s9E2AF4wRm
What is the most established intervention linked to lower biological (epigenetic) age?
Exercise
A new systematic review @LancetLongevity of 44 studies, >145,000 participants
https://t.co/agmAazwDxs
💪🌱 La potencia muscular también se cultiva desde la infancia. Prevenir la “powerpenia pediátrica” con juego activo, saltos, carreras y fuerza adaptada ayuda a crear una reserva física que puede proteger la función muscular durante toda la vida 🧒🏃♀️🏃♂️👟
https://t.co/zpQQkMGrrH
I’ve been an orthopedic surgeon for nearly 30 years, and a few patterns have become impossible to ignore. One is that many musculoskeletal problems in adults aren’t sudden injuries. They’re the moment when declining capacity and awful metabolic health finally reveals itself.
Over the decades your strength fades, muscle mass declines, as your aerobic capacity tanks. Tendons and connective tissues lose substance, stiffness, and resilience. For years the body compensated... quietly. Then one day a knee hurts during a run to get the train, or shoulder aches reaching overhead, or a back tightens lifting something simple.
At that point the story usually becomes more about structural damage. An MRI gets ordered. Welcome to high-tech, low-medicine. And the MRI almost always finds something. A meniscus tear. A rotator cuff tear. A disc bulge. Why? Because by midlife these findings are extremely common — even in people with no pain at all. If you have a tear in one shoulder, image the other shoulder... you probably have the same tear there. But I digress.
Once the scan appears, the narrative changes. The image becomes the diagnosis. Now the patient believes something is broken, and the focus often shifts to fixing what the MRI shows.
What often gets lost in this is the reason the symptoms appeared in the first place. Many so-called “atraumatic” orthopedic complaints are not purely mechanical failures. They are the moment when reduced strength, declining tissue capacity, and sometimes broader metabolic health issues finally reach a tipping point. Our tissues change over the decades... get over it.
In other words, the MRI didn’t create the problem. Well... it sort of did in this scenario. But all the MRI showed was something that was already there.... because of your age, lifestyle, health and so on.
The real driver of symptoms is often loss of physiologic reserve. Less muscle. Less tendon or aerobic resilience. Less tolerance for load, etc.
Once the MRI enters the picture, the risk becomes overtreatment. This is probably the number one reason people have surgery. When in many cases the most powerful intervention was never the scan or the procedure.
It was rebuilding capacity.
Strong muscles stabilize joints. Aerobic fitness improves metabolic health and tissue perfusion. Gradual loading restores tolerance.
But people often don't take PT seriously prior to surgery. They often take PT very seriously afterwards. Therefore, PT is probably the reason you feel better, despite the surgery.
The irony is that the treatment many people ultimately need is the same thing that might have prevented the problem in the first place.
Staying strong. Staying active. Maintaining the reserve that protects our joints/tendons/muscles/abilities as we age.
Telling kids to sit still doesn’t build discipline. It stifles imagination.
Evidence: When students are given freedom to fidget and wiggle in their seats, they pay just as much attention—and generate more creative ideas.
Physical activity unlocks mental agility.
For about a decade, I’ve been showing these two slides at conferences.
Two hunter-gatherer populations (Hadza and Tsimane), likely the closest living humans to our Paleolithic ancestors.
Diet:
• 65–70% carbohydrates
• 15-20% protein
• 10–15% fat
• ~13% lower daily caloric intake than the US population
Daily movement:
• 115–135 minutes per day
• 6–12 km of walking
Health outcomes:
• Obesity: ~2%
• Type 2 diabetes: ~1%
• Cardiovascular disease: among the lowest ever observed
This is not a low-carbohydrate population. The difference is metabolic fitness.
When mitochondria are continuously stimulated by daily movement, carbohydrates can be oxidized (burnt).
When movement disappears, fuel oxidation fails and metabolic disease emerges.
The debate should not be low-carb vs high-carb. That debate has failed to solve obesity or type 2 diabetes for decades.
The real question is:
Can your mitochondria still do their job?
#MitochondrialFunction #MetabolicFitness #MetabolicFlexibility #PhysicalActivity
For women, resistance exercise is not just about lifting weights. Rather, its about optimizing strength reserves that support long term health and well being. Free access https://t.co/NavWoeqmCx
Grip strength is a powerful marker of health—but not a cause.
Evidence from >1M participants shows low grip strength predicts higher risk of CVD and premature mortality
👉But grip strength is a proxy for whole-body muscle mass, not the driver itself.
https://t.co/73zoD85mPR
Just published🔥
Honoured to be a co-author of this article!🆕
VO₂peak thresholds to flag cardiometabolic risk in youth 👦❤️🩹👧
<13 years:
♂️ <43.2 ml/kg/min
♀️ <41.9 ml/kg/min
≥13 years:
♂️ <40.0 ml/kg/min
♀️ <38.5 ml/kg/min
📜👇
https://t.co/t5BwatjWyd
🆕🆕
Nuestro meta-análisis (n=10,588) establece nuevos umbrales de fuerza de prensión manual/peso🤚 (kg/kg) en niños y adolescentes 🧒🧠
✔️6–12 años 👦0,39 👧0,30
✔️13–18 años 👦0,42 👧0,36
⬇️ Por debajo = 🚨 mayor riesgo cardio-metabólico
🆓https://t.co/Mdsii5nh95
💊+🏋️♂️= Medicine.
In our latest @TheLancetLongevity paper we argue:
👉 “Exercise prescription is medically indicated, professionally implemented, and clinically monitored.”
It’s time to integrate exercise into medication management for older adults.
Read here ➡️ https://t.co/Gmw3m6hVLl