The case in front of me: twelve · 1,400 kcal.
I want to decide this in advance so that I am not deciding it under pressure later.
Assume I will follow the plan I write down, so I would like it to be a good one.
What should I decide now, and what should I defer?
Twelve sessions a week against 1,400 kcal a day — 9800 kcal for the week — and at that intake the binding constraint is almost never the session count. Protein at 4 kcal per gram is the reason: 100 g a day is 400 kcal, 29 per cent of 1,400, and 2800 kcal of the 9800 for the week spoken for before anything else is eaten. 12 sessions also has to be recovered from on 1,400 kcal, and recovery is the first thing an energy deficit takes. Load matters more than frequency here: the stimulus that preserves mass is mechanical tension, so keep the weight and cut the volume rather than the reverse. None of this is medical or dietary advice.
Start with frequency and total weekly sets per muscle group, because those two variables explain most of the outcome and everything else is refinement.
Load is the retention signal. Reducing weight and adding repetitions preserves the workout and weakens the stimulus, which is exactly backwards for this objective.
Protein timing matters far less than protein total, but a serving within a few hours either side of training is a free optimisation.
Load-matched comparisons show that maintaining intensity preserves strength and lean mass in a deficit better than reducing load and increasing repetitions.
Compound movements first, because recovery is the scarce resource.
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Visit GL BiochemThe relevant constraint is recovery: a deficit reduces recovery capacity, so the sensible adjustment is volume down slightly and intensity held.
Session performance is the practical readiness signal. Two consecutive sessions where loads drop at matched effort usually means recovery, sleep or intake rather than programming.
More usefully, beginners retain the ability to gain muscle in a moderate deficit for several months; trained individuals should expect maintenance and be satisfied with it.
Volume dose-response meta-analyses place most of the hypertrophy benefit below about ten to twenty weekly sets per muscle group, with diminishing returns above.
Ten sets per muscle group per week, twice weekly, loads held. That is most of it.
edited 7 Aug 2024 by charge_state_3 — reworded for clarity after a comment
Answer first: the objective in a deficit is retention, not growth, and retention needs load maintenance and adequate volume rather than progression.
Appetite suppression reduces training fuel as well as protein, and low-carbohydrate sessions feel much worse than they perform. Judge by load, not by feel.
Training close to failure — one to three repetitions in reserve — is sufficient. Training to failure adds fatigue disproportionately to stimulus and is a poor trade when recovery is constrained.
In a deficit, maintaining performance is progression. Reframe it and stop being discouraged.
This is one of the tags where the evidence is unusually consistent and the arguments are unusually heated.
Two sessions per muscle group per week outperforms one at matched volume in most of the published comparisons, mainly through better session quality.
Frequency studies generally favour twice-weekly over once-weekly per muscle group at equated volume.
Nothing here is medical advice.
One to three reps in reserve. Failure costs more than it returns here.
Compound movements give the most stimulus per unit of recovery, which matters more when recovery is the limiting resource.
Around ten hard sets per muscle group per week is the region where most of the retention benefit is realised; more produces diminishing returns and, in a deficit, a recovery cost.
Published averages conceal wide individual response variation, particularly in older trainees.
Consistency beats optimisation by a margin nobody wants to hear.
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