Complexity doesn't make you stronger
If you've spent time comparing strength training programs online, you've probably noticed a pattern: the more complicated the program looks, the more serious it seems.
Undulating periodization, block periodization, DUP, conjugate, wave loading. The technical terminology multiplies, and with it, the impression that better results are hidden inside more sophisticated programming.
A March 2026 study from McMaster University challenges this directly. After analyzing 137 systematic reviews covering more than 30,000 participants, the researchers reached a straightforward conclusion: consistency beats complexity for the vast majority of people who train.
What the study actually measured
The McMaster analysis served as the scientific backbone for the new 2026 ACSM Resistance Training Position Stand, the first major update in 17 years.
What the researchers found: elastic band training, bodyweight work, and home-based routines produce measurable improvements in strength, muscle size, and functional performance, comparable to gym-based protocols with free weights and machines.
The variable that best predicts progress isn't program design. It's training consistency.
Why you're switching programs too often
Many fitness apps push users to swap programs every 4 to 6 weeks, often framed as necessary to "prevent adaptation." This practice isn't backed by the evidence.
The body adapts to a given stimulus over several weeks. Changing programs before you've exhausted the potential adaptations means you're cutting the progress cycle short.
Progressive overload, technique, and recovery account for the large majority of training gains. The specific periodization model matters much less.
What this actually means for your training
If you're training 2 to 4 times per week with consistent progressive overload on compound movements, you're covering the essential ground that the science validates for strength and hypertrophy.
Progressive overload remains the central principle. Each week, you're looking to do a little more than the week before, whether in load, reps, or density.
Program variation has its place for motivation and skill development. But treating it as a physiological necessity confuses psychology with physiology.
The most underrated variable
The McMaster study points to something many athletes underweight: recovery. Sleep quality, stress levels, and nutrition influence long-term results more than program sophistication.
A simple program executed consistently over two years almost always beats a complex program with poor recovery.
That's uncomfortable to hear, because it shifts the problem. The constraint isn't your program. It's your consistency and your recovery.