ACSM rewrites resistance rules
The American College of Sports Medicine released a new Position Stand after 17 years, synthesizing 137 studies and data from over 30,000 participants — its headline: any resistance training beats none and consistency > perfection. It prescribes minimums like training muscle groups ~2x/week with heavy loads and full range of motion, 2–3 sets for strength, 10+ sets per muscle per week for hypertrophy, and power work at ~20–70% 1RM moved quickly — plus notes that bands or bodyweight make this accessible for average adults [].
The Position Stand, titled “Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults,” was published in Medicine & Science in Sports & Exercise on March 5, 2026 (DOI 10.1249/MSS.0000000000003897). (t.co) Authors led by Brad S. Currier and including Stuart M. Phillips compiled an overview of reviews rather than a single meta-analysis, drawing on 137 systematic reviews that together covered more than 30,000 participants. (t.co) The evidence search was run across Ovid MEDLINE ALL, Emcare, Embase, the Cochrane Database of Systematic Reviews, SPORTDiscus and Web of Science and was current to October 2024. (t.co) Specific outcome signals included that voluntary strength gains were strongest when people lifted heavier loads (≥80% of one‑rep max) and that muscle size responded particularly to higher total training volume and eccentric overload. (t.co) The authors report several commonly promoted variables showed inconsistent effects — training to momentary fatigue, equipment type, exercise complexity, set structure, time‑under‑tension, blood‑flow restriction, and typical periodization models did not reliably change primary outcomes across reviews. (t.co) This document replaces ACSM guidance from 2009 and names contributors including Brad J. Schoenfeld and Abbie E. Smith‑Ryan alongside Currier and Phillips, with the authors noting practical adherence remains central — “The best resistance training program is the one you'll actually stick with,” Stuart Phillips said in commentary. (t.co)
