In healthy men aged 69–70, performing supervised slow resistance exercises for 12 weeks leads to higher force and stress levels in key tendons and connective tissues of the leg, indicating these...

We analyzed the available evidence and found that 12 weeks of slow resistance training appears to increase stress levels in tendons and aponeuroses in healthy elderly men aged 69–70 [1]. This means the connective tissues in the legs were exposed to higher mechanical forces during and after the training, suggesting they adapted to handle more load. We did not find any studies that contradicted this observation. The evidence we’ve reviewed so far leans toward the idea that slow, supervised resistance exercises can place greater demand on these tissues, which may reflect improved strength or stiffness in the tendons. However, we cannot say whether this change is beneficial, neutral, or potentially risky without more context about long-term outcomes or individual health factors. The single assertion we reviewed was based on a specific group of men in a controlled setting, so we don’t know if the same result would appear in women, younger or older adults, or those with existing joint or tendon conditions. What we’ve found so far suggests that slow resistance training can alter tendon stress in this population, but more research is needed to understand what this means for mobility, injury risk, or overall function. For now, if you’re an older man considering this kind of training, it may help your tendons handle more force — but always start under supervision and listen to your body.