Resistance Training

Research summary

• A large and consistent body of research supports resistance training for preserving muscle mass, strength, and bone density with age.
• Multiple systematic reviews and meta-analyses of randomized trials show meaningful improvements in strength, gait speed, and physical function, particularly in older adults with sarcopenia, and expert consensus statements (NSCA, ICFSR) recommend it as a core longevity intervention.
• Reviews consistently link preserved muscle strength to lower fall risk and better long-term function.
• Evidence quality is high because findings replicate across multiple independent meta-analyses and expert position papers rather than single studies.
• The main caveat is that most trials focus on strength and functional outcomes rather than direct mortality endpoints, so the size of any longevity benefit itself is inferred rather than directly measured.