What the research says about dose-response, in plain English, with every original paper linked.
2 studies on this topic
2022
Sports Medicine
Studied: Men and/or women ≥65 years (pooled RCTs)
Across randomized trials in adults 65 and older, progressive resistance training reliably increased leg strength and hip/femur bone density together — with higher training frequency linked to bigger gains in both.
2017
Journal of Sports Sciences
Studied: Pooled resistance training studies across training statuses
Across studies, higher weekly set volumes produced greater muscle growth than very low volumes — but the curve flattens. For most people, a handful of hard sets per muscle group, two to three times a week, is plenty.
These summaries are general education, not medical advice. Individual results vary, and research on groups does not replace advice about your body from your doctor.
