Training · Moderate evidence
Resistance Training, Strength, and Hypertrophy
Various training prescriptions improve strength and hypertrophy; heavier loads favor strength, and multiple sets favor hypertrophy.
Systematic review and network meta-analysis · 1 source · 2 min
What the studies show
- Nearly any combination of load and sets improves strength and muscle mass compared to not training.
- Heavier loads were the most effective for strength; multiple sets were the most effective for hypertrophy.
- The difference between reasonable prescriptions is smaller than the difference between training and not training.
How Letz applies it
The generator prioritizes ensuring the user trains consistently and with good technique before fine-tuning details; the target range for sets and load is determined by their stated goal.
Numbers derived from this rule
| Parameter | Range | Weight | Rule |
|---|---|---|---|
| Reps per set | 6–12 reps2 variants by context | 60% | Broad ranges work when effort is high; 6 to 12 is practical for mass, 3 to 6 for maximal strength, and up to 20 with bodyweight.Load and rep range · Resistance Training, Strength, and Hypertrophy |
Who it applies to
Healthy adults in supervised or structured resistance training programs.
Limits
Does not determine the single best exercise for an individual on its own, nor does it replace symptoms, preferences, technique, or professional assessment.
Sources
- Currier et al., British Journal of Sports Medicine, 2023 DOI 10.1136/bjsports-2023-106807
More in Training
- Weekly Volume: Sets per Muscle GroupMore weekly sets per muscle produce greater hypertrophy, with diminishing returns; for strength, moderate volumes already capture most of the gains.
- Frequency: training each muscle at least twice per weekTraining a muscle group twice a week is superior to once for hypertrophy; for strength, higher frequency helps primarily because it distributes volume more effectively.
- Load and rep rangeLight and heavy loads produce similar hypertrophy when sets are taken close to failure; heavy loads are superior for maximizing strength gains.
- Rest Between SetsRest intervals of two minutes or more favor strength and hypertrophy in compound exercises; short rest intervals work well when time is constrained.