Better Function, Smarter Training even for the Vulnerable: 3 New Trials in Older Adults & Special Populations
Three new studies reshaping how we think about function, safety, and exercise prescription.
1. Weekly Rapamycin With Exercise? Not a Boost—Maybe Even a Drag
A new study in PubMed found that once-weekly sirolimus (rapamycin) did not improve and may have slightly blunted strength gains from a 13-week home exercise program in sedentary adults aged 65–85. The rapamycin group also experienced more minor side effects—including one serious infection—than placebo.
While mTOR-inhibitors like rapamycin look promising in aging research, adding them to your training routine might not enhance functional results—and could carry risks.
Stick to the basics: purposeful training + consistency. Save the longevity “hacks” for when the evidence is stronger and safer.
🔗 https://www.ncbi.nlm.nih.gov/pubmed/41985884
2. Online Resistance Training Empowers Breast Cancer Survivors
A study in PubMed showed that a supervised, 12-week online resistance program improved both upper and lower body function in a racially diverse group of breast cancer survivors. High participation and engagement rates were reported, though barriers included equipment access and treatment side effects.
Remote exercise isn’t just convenient—it’s effective for improving strength and functional health, even for those juggling unique challenges or health barriers.
Where you train matters far less than consistent effort and accessible support. Virtual tools can be powerful allies for building—and maintaining—resilience.
🔗 https://www.ncbi.nlm.nih.gov/pubmed/41990365
3. Multimodal Exercise Can Reduce Frailty in MS
A pilot study in PubMed found that a 6-week program combining virtual reality treadmill work and resistance training was safe, feasible, and well-received by frail people with multiple sclerosis. Nearly perfect adherence and positive quality-of-life changes support running larger trials in the future.
Even among the most vulnerable, thoughtfully structured multimodal training can be delivered safely—and may reduce frailty and improve well-being.
Never underestimate the power of tailored exercise—even with complex conditions, building strength and confidence remains possible.





Interesting contrast: added complexity (like rapamycin) doesn’t improve results, and may add risk. Meanwhile, simple, consistent training, online or in-person, keeps delivering, even in clinical groups.
The takeaway: adherence beats optimization.