Research
Mixed
High loads (>60% 1RM) are superior to low loads for maximizing strength gains, while both high and low loads can produce similar hypertrophy if performed to failure.
To build strength, prioritize heavy loads (>60% 1RM). To build muscle, you can use either heavy or light loads, provided you take your sets close to failure. Light loads are a viable option for joint health or accessibility without sacrificing muscle growth.
GoodQualifiesHIGH confidence
However, high loads appear more suitable to maximize the strength gains.
Why this rating
Supported by meta-analyses comparing high vs. low loads.
Source
Appropriate Reporting of Exercise Variables in Resistance Training Protocols: Much more than Load and Number of Repetitions
Giuseppe Coratella · Sports Medicine - Open · 2022
DOI 10.1186/s40798-022-00492-1
narrative_reviewCited 79×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Resistance training protocols must report within-exercise variables beyond load and repetitions—including failure status, range of motion, time under tension, and attentional focus—to accurately determine the training stimulus.Good
- Training to failure produces greater hypertrophic adaptations than training not to failure, but only when total volume is not equated; when volume is equated, the two methods yield equivalent results.Good
- Full range of motion (ROM) produces greater strength gains in full ROM tasks and greater hypertrophy in specific muscles (e.g., gluteus maximus) compared to partial ROM, although partial ROM can be used to overcome sticking points.Good
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