Gaining more from doing less? The effects of a one-week deload period during supervised resistance training on muscular adaptations
A full week off at the midpoint of a 9-week program cost lower-body strength and bought nothing in hypertrophy, power or endurance
Participants
n=39 resistance-trained young adults (29 men, 10 women)
Protocol
9-week high-volume resistance-training program; lower-body sessions directly supervised, upper-body unsupervised
DELOAD: abstained from resistance training entirely for 1 week at the midpoint (week 5)
TRAD: the same program performed continuously over 9 weeks
Measures: muscle thickness (proximal/mid/distal middle and lateral quadriceps, mid triceps surae), lower-body isometric and dynamic strength, quadriceps local muscular endurance, lower-body power, readiness-to-train questionnaire
Key Findings
| Measure | DELOAD | TRAD | Difference |
|---|---|---|---|
| Lower-body hypertrophy | ↑ | ↑ | No appreciable difference |
| Local muscular endurance | ↑ | ↑ | No appreciable difference |
| Power | ↑ | ↑ | No appreciable difference |
| Isometric strength | ↑ | ↑↑ | TRAD greater |
| Dynamic strength | ↑ | ↑↑ | TRAD greater |
| Readiness to train | — | slightly better | TRAD slight psychological benefit |
Conclusions
Authors: a 1-week deload at the midpoint of a 9-week resistance-training program appears to negatively influence lower-body strength and has no effect on hypertrophy, power or local muscular endurance.
The tested deload was complete cessation of training; a reduced-volume deload week was NOT tested, so this study says nothing about "reduce vs continue".
The premise being tested — that brief cessation "re-sensitizes" muscle to anabolic stimuli — was not supported here.
Critical Context for Planning
This is a resistance-training study in resistance-trained young adults, not an endurance study. Inference, not tested here: endurance deload weeks are argued for on other grounds (autonomic recovery, glycogen restoration, neuromuscular recovery after high-intensity blocks, psychological recovery) — see REF-134 and REF-139; nothing in this paper bears on them.
Practical Application
In 39 resistance-trained young adults (29 M / 10 F) on a 9-week high-volume program, a complete one-week break from lifting at week 5 produced the same lower-body hypertrophy, power and local endurance as training straight through, but smaller gains in isometric and dynamic lower-body strength and slightly lower readiness to train — so in a strength block of this length, a full week off is not a "supercompensation" trick: it costs strength and buys nothing else.
Not from this paper: reducing strength volume by 40-50% in a deload week instead of stopping — a reduced-volume deload was not tested here, so this study neither confirms nor refutes it; the endurance deload itself is governed by REF-134 and REF-139, not by this paper.
Limitations
n=39, resistance-trained young adults (Tier 2), one-week complete deload in a supervised resistance-training programme — not endurance athletes and not a training-camp deload.
A single deload of one length and one type (full cessation), in one position within the block; nothing about reduced-volume deloads, frequency, timing or the deload an endurance athlete actually needs.
Short intervention with hypertrophy and strength outcomes; a deload's purpose is often fatigue management over months, which this design cannot see.
Level B and a small sample: the finding is compatible with a real but modest effect in either direction.
Upper-body training was unsupervised; outcomes are lower-body only.
How this entry was checked and changed
Content correction 2026-09-27
Sport "cycling, strength" -> strength; Tier "recreationally active, 1-2" -> Tier 2 resistance-trained young adults (29 M / 10 F).
"Confirms Coleman: full cessation worse than reduced" -> wrong: a reduced-volume deload was not tested; only full cessation vs continuous training.
"At ≤90 sets/week and ≤9 weeks deload not required" -> not traceable to the abstract; removed. Readiness-to-train result (slight TRAD benefit) added; endurance-deload rationale marked as inference from other entries.
Cross-reference descriptions checked against the cited entries' current content; wrong years, wrong entries and claims the cited entry does not make were corrected.