ACSM Updates Resistance Training Guidelines: Consistency is Key

The American College of Sports Medicine (ACSM) has released its first major update to resistance training recommendations in 17 years, delivering a straightforward message: even small amounts of resistance training can significantly improve strength, increase muscle size, enhance power and support overall physical function. [1]

Latest Evidence Supports Simplicity

The updated guidance, formalized as a Position Stand, is based on a comprehensive review of 137 systematic reviews encompassing data from over 30,000 participants. [3] This makes it the most extensive and evidence-based set of resistance training recommendations to date. The core finding emphasizes that consistency, rather than complex training regimens, yields the greatest benefits.

Consistency Over Complexity

“The best resistance training program is the one you’ll actually stick with,” says Stuart M. Phillips, PhD, FACSM, a professor in the Department of Kinesiology at McMaster University and an author of the Position Stand. [1] “Training all major muscle groups at least twice a week matters far more than chasing the idea of a ‘perfect’ or complex training plan. Whether it’s barbells, bands, or bodyweight, consistency and effort drive results.”

A Surge in Strength Research

This update arrives after a period of increased scientific interest in the importance of muscle health and its impact on aging and overall well-being. The previous ACSM Position Stand on resistance training for healthy adults was published in 2009, before the recent surge in research demonstrating the long-term health benefits of strength training. [3] Phillips notes that the new document reflects this expanded body of evidence and broadens its recommendations to include a wider range of individuals and training modalities.

No Gym Membership Required

A significant shift in the updated recommendations is the recognition that effective resistance training doesn’t necessitate a gym membership. Exercises utilizing elastic bands, bodyweight movements, or simple at-home routines can still produce measurable gains in strength, muscle size, and functional capacity. [1] The emphasis is on finding a routine that fits an individual’s lifestyle and can be maintained over time.

Individualization is Paramount

The guidelines move away from “one-size-fits-all” prescriptions, advocating for individualized programs based on personal goals, enjoyment, and safety to maximize long-term adherence. [1] If a program is too demanding to maintain, its effectiveness diminishes.

Implications for Athletes and the General Population

While athletes and highly trained individuals may benefit from more specialized, sport-specific programs, the core guidance for most adults remains clear: choose a resistance training routine that aligns with your lifestyle and commit to it consistently. [1]

The full ACSM Position Stand is available in Medicine & Science in Sports & Exercise. [2]