Mike IsraetelPhD · exercise scientist
Yes, plan a lighter week at maintenance volume to end each training block
What it rests onFatigue accumulates as weekly volume climbs toward the most you can recover from; cutting volume sheds it while keeping enough stimulus to hold muscle, so the next block can start fresh
Source: rpstrength.com ↗
Brad SchoenfeldPhD · exercise scientist, hypertrophy research
Not on a schedule: a planned week off did not help size and cost strength
What it rests onRandomised trial, 39 resistance-trained adults, one week of abstention at the midpoint of a nine-week programme; no appreciable difference in muscle size, endurance or power, and less isometric and dynamic strength gain than training continuously
Source: pubmed.ncbi.nlm.nih.gov ↗
Both sides address trained adults who are already running structured programmes. The trial was 29 men and 10 women, young, resistance-trained, over nine weeks. Neither side speaks to beginners, older adults, or anyone whose limiter is joint pain rather than systemic fatigue.
Both accept that fatigue is real, that performance is the signal to watch, and that a reduction in training is the right response when performance falls. The dispute is whether the reduction should be scheduled in advance or triggered by measurement.
A trial comparing RP's actual deload (reduced volume at maintained intensity) against continuous training, over a longer horizon than nine weeks, and in a population that includes older or less recovered trainees. The 2024 trial tested abstention, not the prescription.
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