The American College of Sports Medicine (ACSM) recently published as a Position Stand its new 2026 guidelines on Resistance Training (RT), updating its previous 2009 guidelines . This update was a major overhaul of its previous views and advice, now based on data from 137 systematic reviews with over 30,000 participants.
It used umbrella review methodologies and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework rather than expert opinion. The 2009 guidelines were often criticized for being very rigid and rule-based — focusing on variables like periodization, time under tension, and specific equipment types, which was confusing for many people.
Experts say the 2026 update is more flexible and show that these variables don’t matter as much as previously thought, and that consistency is key to achieving results. Here’s a swift rundown of the new guidelines, what they replaced, and what experts think of the changes.
The new guidelines are centered on “Progressive Resistance Training” and offer guidance on achieving specific training goals — strength, hypertrophy, or power.
Medical News Today published a clinical update in Research Highlights on 20 Mar 2026.
The item focuses on New resistance training guidelines debunk 3 myths for stronger muscles.
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